Temat: turtle - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The oldest African eucryptodiran turtle from the Cretaceous of Angola
Autorzy:: Mateus, O.
Jacobs, L.
Polcyn, M.
Schulp, A.S.
Vineyard, D.
Buta Neto, A.
Antunes, M.T.
Powiązania:: https://bibliotekanauki.pl/articles/21522.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Cretaceous
fauna
Africa
eucryptodiran turtle
turtle
Eucryptodira
Angola
paleobiogeography
Turonian
phylogenetic analysis
Opis:: A new Late Cretaceous turtle, Angolachelys mbaxi gen. et sp. nov., from the Turonian (90 Mya) of Angola, represents the oldest eucryptodire from Africa. Phylogenetic analysis recovers Angolachelys mbaxi as the sister taxon of Sandownia harrisi from the Aptian of Isle of Wight, England. An unnamed turtle from the Albian Glen Rose Formation of Texas (USA) and the Kimmeridgian turtle Solnhofia parsonsi (Germany), are successively more distant sister taxa. Bootstrap analysis suggests those four taxa together form a previously unrecognized monophyletic clade of marine turtles, herein named Angolachelonia clade nov., supported by the following synapomorphies: mandibular articulation of quadrate aligned with or posterior to the occiput, and basisphenoid not visible or visibility greatly reduced in ventral view. Basal eucryptodires and angolachelonians originated in the northern hemisphere, thus Angolachelys represents one of the first marine amniote lineages to have invaded the South Atlantic after separation of Africa and South America.
Źródło:: Acta Palaeontologica Polonica; 2009, 54, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A basal eucryptodiran turtle 'Sinemys' efremovi [-Waguia efremovi] from the Early Cretaceous of China
Autorzy:: Danilov, I G
Sukhanov, V.B.
Powiązania:: https://bibliotekanauki.pl/articles/21804.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Early Cretaceous
Cretaceous
Testudines
turtle
China
eucryptodiran turtle
Junggar Basin
Macrobaenidae
Eucryptodira
Wuguia efremovi
Sinemys efremovi
paleontology
Opis:: A reexamination of the type material (two specimens considered for a long time lost) of the poorly known turtle “Sinemys” efremovi Khosatzky, 1996 from the Early Cretaceous Tugulu Group of northwest China, allows us to present new observations, images, and taxonomic conclusions about these important specimens. We conclude that: (1) “S.” efremovi is referrable to the basal eucryptodire genus Wuguia Matzke, Maisch, Pfretzschner, Sun, and Stöhr, 2004 based on a small size (up to 150 mm in shell length), absence of the nuchal emargination, presence of additional ossifications in the suprapygal region of the carapace and similar plastral proportions with relatively long bridges (35−45% of the plastron width), and a narrow and elongated posterior lobe; (2) “S.” efremovi is a senior subjective synonym of Dracochelys wimani Maisch, Matzke, and Sun, 2003, another species recently described from the Tugulu Group. As construed here, Wuguia includes two species: W. efremovi (Khosatzky, 1996) and W. hutubeiensis Matzke, Maisch, Pfretzschner, Sun, and Stöhr, 2004. New diagnoses for these taxa are given.
Źródło:: Acta Palaeontologica Polonica; 2006, 51, 1
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A new freshwater basal eucryptodiran turtle from the Lower Cretaceous of Spain
Autorzy:: Perez-Garcia, A.
De La Fuente, M.S.
Ortega, F.
Powiązania:: https://bibliotekanauki.pl/articles/20420.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: new genus
new species
freshwater turtle
eucryptodiran turtle
Lower Cretaceous
Cretaceous
paleontology
Spain
Testudines
Eucryptodira
Barremian
Las Hoyas
Opis:: A freshwater turtle from the lithographic limestone of Las Hoyas (Barremian of Cuenca, Spain) is described as a new genus and species of Eucryptodira, Hoyasemys jimenezi. The holotype consists of the skull, lower jaw, carapace, plastron, vertebral column, pectoral and pelvic girdle remains, and foreand hindlimbs. Hoyasemys jimenezi gen. et sp. nov. is characterized by three pairs of blind oblique depressions on the ventral surface of the basisphenoid, and a character combination composed, among others, of the articulation between the fourth and fifth cervical vertebrae through a cotyle in the fourth and a condyle in the fifth, amphicoelous caudal centra, and most digits of manus and pes with three elongated phalanges. This study allows clarification of the systematic position of a species of uncertain affinity often identified as “chelydroid” in appearance. A phylogenetic analysis shows Hoyasemys jimenezi gen. et sp. nov. forms a monophyletic group with Judithemys sukhanovi, Dracochelys bicuspis, Sinemys lens, and Ordosemys leios, collectively the sister group of crown Cryptodira.
Źródło:: Acta Palaeontologica Polonica; 2012, 57, 2
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The description and phylogenetic position of a new nanhsiungchelyid turtle from the Late Cretaceous of Mongolia
Autorzy:: Sukhanov, V.B.
Danilov, I.G.
Syromyatnikova, E.V.
Powiązania:: https://bibliotekanauki.pl/articles/21943.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: description
phylogenetic position
new species
nanhsiungchelyid turtle
Kharakhutulia kalandadzei
turtle
Late Cretaceous
Mongolia
Kharakhutulia
paleontology
Nanhsiungchelyidae
Cryptodira
Testudines
Upper Cretaceous
Opis:: This paper describes a new nanhsiungchelyid turtle, Kharakhutulia kalandadzei gen. et sp. nov., based on two partial shells and additional shell fragments from the lower part of the Bainshire Formation (Upper Cretaceous, Cenomanian–lower Turonian) of the Khara Khutul locality of Eastern Mongolia. Our phylogenetic analysis places Kharakhutulia kalandadzei as the most basal member of the Nanhsiungchelyidae and suggests new relationships within this group. Previously reported nanhsiungchelyid specimens from the Khara Khutul are reassigned to Nanhsiungchelyidae indet. and Hanbogdemyssp. indet. Thus the Khara Khutul includes at least two valid taxa of nanhsiungchelyids. Our analysis of the nanhsiungchelyid record in Asia shows that other localities have only a single representative of this clade, making Khara Khutul a unique site. The basal phylogenetic position of Kharakhutulia kalandadzei emphasizes the importance of the study of this and other Cenomanian–Turonian localities of Asia to better understand the basal diversification of the Nanhsiungchelyidae.
Źródło:: Acta Palaeontologica Polonica; 2008, 53, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The Influence of Tidal on the Nesting Activity of Green Turtle (Chelonia mydas (Linnaeus, 1758)) at Pangumbahan Beach, Sukabumi Regency, West Java, Indonesia
Autorzy:: Adiluhung, M. Boy
Riyantini, Indah
Sunarto, Sunarto
Faizal, Ibnu
Powiązania:: https://bibliotekanauki.pl/articles/1193344.pdf
Data publikacji:: 2021
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Chelonia mydas
Green Turtle
Nesting Activities
Pangumbahan
Tides
Opis:: Green turtles (Chelonia mydas (Linnaeus, 1758)) take advantage of the sand beach area as a stopover and carry out biological activities such as nesting and laying eggs. Pangumbahan Beach is one of the green turtle conservation places which is directly adjacent to the Indian Ocean. Tides affect physical processes such as the flushing of seawater on to the coast due to waves and flushing of water masses in estuaries, lagoons, and bays. This research aims to determine the effect of tides on the Green Turtle's nesting activity (Chelonia mydas). This research was conducted in July-September 2020, using observation and survey methods, and was analyzed descriptively. The data used include beach width, beach slope, tidal data, and landing data for Green Turtle (Chelonia mydas). A type of beach with a slope of 1.77° - 5.77° with an overall average of 3.4°, the Formzahl number value obtained at tide is 0.55, indicating the mixed type tidal type tends to double daily (Mixed, predominantly semi-diurnal tide). The results of this study indicate that the landing times and the formation of green turtle nests (Chelonia mydas) do not correlate with rising tides. The average effect of tides on green turtle egg-nesting activity (Chelonia mydas) was 0.111%, while the tidal effect on green turtle nesting activity (Chelonia mydas) was 4.09%. The highest frequency of Green Turtle (Chelonia mydas) nesting activity occurred between 22:00 and 02:00.
Źródło:: World Scientific News; 2021, 154; 48-65
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: First data on the genetic structure of Trachemys scripta populations in Sicily (Testudines: Emydidae)
Autorzy:: Vecchioni, Luca
Marrone, Federico
Arculeo, Marco
Vamberger, Melita
Powiązania:: https://bibliotekanauki.pl/articles/2203564.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: biological invasions
microsatellite
non-indigenous species
pond turtle
Opis:: The pond slider Trachemys scripta is one of the most widespread alien turtle species in the world. Its unregulated trade and the consequent uncontrolled releases into the wild led to negative impacts on the native turtles of the invaded areas. In Italy, alien pond sliders are widely spread, and the occurrence of hatchlings and well-established populations is known in some areas. However, to date in Sicily, only a single female of Trachemys scripta laying eggs was reported. Besides that, nothing is known about the actual reproduction success and establishment of self-sustaining T. scripta populations in Sicily. Therefore, based on 14 previously characterised highly polymorphic microsatellite loci, we aimed to unravel if the alien turtles successfully reproduce in Sicily, in both natural and semi-natural areas (i.e., lake “Biviere di Gela” and “Parco d’Orléans”, respectively). Our results show a clear structuring of the two studied populations. Several full-sibling relationships between the sampled turtles were found, suggesting actual reproduction in the wild of the pond sliders in Sicily. However, further sampling is desirable since no parent-offspring relationships were observed in the studied populations. Due to our results, systematic monitoring of alien pond sliders in the whole of Sicily is crucial for better planning of mitigation strategies in order to protect the native biota of Sicilian inland waters.
Źródło:: Journal of Water and Land Development; 2022, Special Issue; 139--145
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Carapace anomalies of pond turtles (Emys orbicularis) from the Poleski National Park, from the hatch of 2008
Anomalie karapaksu żółwi błotnych (Emys orbicularis) z Poleskiego Parku Narodowego z lęgu 2008 roku
Autorzy:: Kosik, E.
Wójcik, M.
Beeger, S.
Rozempolska-Rucińska, I.
Powiązania:: https://bibliotekanauki.pl/articles/2196894.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:: carapace anomaly
pond turtle
Emys orbicularis
Polesie National Park
Źródło:: Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica; 2013, 31, 1; 34-42
0239-4243
2083-7399
Pojawia się w:: Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Study Social Economy Green Tree Conservation Area (Chelonia mydas) as a Daily Ecowism in Pangumbahan, Sukabumi District, Indonesia. Case Study of Green Turtle Conservation Areas for Local Communities
Autorzy:: Fatimah, Vetthy
Nurhayati, Atikah
Nurruhwati, Isni
Riyantini, Indah
Powiązania:: https://bibliotekanauki.pl/articles/1066267.pdf
Data publikacji:: 2019
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Chelonia mydas
Ecotourism
Local Communities
Socio-Economy
Turtle Conservation
Opis:: This research was conducted in Pangumbahan Village, Ciracap District, Sukabumi Regency, West Java Province. The implementation starts from August 2018 until March 2019. The socio-economic study of the green turtle conservation area (Chelonia mydas (Linnaeus, 1758)) as a marine ecotourism for local communities is carried out to know the potential of conservation areas in terms of the social and economic aspects that are generated in local communities. The method used in this research is the case study method in Pangumbahan Village by collecting primary data and secondary data. The sampling method used was purposive sampling and data processing using Ms. Excel. Based on the research that has been done, it is known that even though the impact has not been felt by the whole community, the Pangumbahan Village community hopes that Pangumbahan Beach Turtle Beach Park area can be developed because it has the potential to provide more benefits to them.
Źródło:: World Scientific News; 2019, 130; 82-98
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: New data on lindholmemydid turtle Lintholmemys from the Late Cretaceous of Mongolia
Autorzy:: Danilov, I G
Sukhanov, V.B.
Powiązania:: https://bibliotekanauki.pl/articles/22651.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: locality
Late Cretaceous
Cretaceous
turtle
Lindholmemys
Mongolia
Asia
Lindholmemys martinsoni
Lindholmemydidae
shell fragment
Sheeregeen Gashoon
Bayn Shire Formation
lindholmemydid turtle
shell morphology
paleontology
Opis:: Reinvestigation of a fragmentary lindholmemydid turtle from a Mongolian locality Sheeregeen Gashoon (late Turonian-Santonian) suggested reassignment to Lindholmemys martinsoni Ckhikvadze, 1975. This restricts the stratigraphic range of the genus Mongolemys, to which the specimen was originally assigned. Additionally, new morphologica1 data on L. martinsoni have been gathered and are presented in this paper. The Lindholmemydidae are considered here as a paraphyletic group uniting primitive testudinoids (all of which are known from Cretaceous to Paleocene of Asia). Their shell morphology is characterized by well developed plastral buttresses, which contact costal bones (synapomorphy of testudinoids, see Gaffney & Meylan 1988) and by complete (uninterrupted) row of inframarginal scutes (primitive character).
Źródło:: Acta Palaeontologica Polonica; 2001, 46, 1
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Abrasion impact towards green turtle Chelonia mydas (Linnaeus, 1758) nesting areas in Sindangkerta, Tasikmalaya Regency, West Java, Indonesia
Autorzy:: Mustaqim, Rifki A.
Sunarto, Sunarto
Syamsuddin, Mega L.
Faizal, Ibnu
Powiązania:: https://bibliotekanauki.pl/articles/1031832.pdf
Data publikacji:: 2020
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Abrasion
Chelonia mydas
Coastline
Green Turtle
Nesting Area
Satellite Imagery
Sindangkerta
Opis:: Green turtles (Chelonia mydas) are marine reptilians that have habitats in coastal areas to lay eggs. Abrasion is a phenomenon of beach erosion caused by waves and ocean currents which can cause damage to the coast. The purpose of this research is to analyze the impact of abrasion on green turtle’s nesting areas (Chelonia mydas). The research was conducted in the coasts of Sindangkerta, Tasikmalaya Regency, West Java, from December 2019 to January 2020. The method used in this research is observation and survey method, and the data are analyzed comparatively and descriptively. The data used consist of satellite imagery, tide, turtle’s landing, and the characteristics of turtle nesting areas in Sindangkerta coast in the year 1999, 2013, and 2019. The results showed that abrasion changes the condition of the Green Turtle (Chelonia mydas) nesting areas which led to a 40.09 m decrease in beach width, 2.04˚ decrease in beach slope, 15.51% increase in sand (fine-medium), and a loss of several coastal vegetation species.
Źródło:: World Scientific News; 2020, 147; 124-139
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: The European Early Cretaceous cryptodiran turtle Chitracephalus dumonii and the diversity of a poorly known lineage of turtles
Autorzy:: Perez-Garcia, A.
Powiązania:: https://bibliotekanauki.pl/articles/21609.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Europe
Lower Cretaceous
cryptodiran turtle
turtle
Chitracephalus dumonii
animal diversity
Testudines
Eucryptodira
Cryptodira
Cretaceous
Belgium
Spain
synonym
paleontology
phylogenetic analysis
systematics
holotype
Salasemys pulcherrima
Opis:: Chitracephalus dumonii was named based on some of the most complete turtle remains from the Lower Cretaceous of Europe, and yet the taxon has barely been mentioned since. Indeed, new specimens were erroneously attributed to a new taxon, “Salasemys pulcherrima”. The synonymy is recognized here, and this extends the geographical range of this turtle and provides examples of individuals at different stages of ontogenetic development. The peculiar structure of its shell, and its ontogenetic development, are unique to this taxon. The systematic position of C. dumonii was previously unclear, usually being referred to Testudinata incertae sedis. Here, it is placed in a cladistic analysis, which shows that C. dumonii, and the recently described Hoyasemys jimenezi form part of a Lower Cretaceous European clade of Cryptodira that includes “macrobaenid”, “sinemydid”, and panchelonioidean turtles.
Źródło:: Acta Palaeontologica Polonica; 2012, 57, 3
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The Forgotten Trade of European Pond Turtle Emys orbicularis in Central Europe in the 18th and 19th Centuries – An Essential Introduction to Historical and Economic Investigation
Autorzy:: Daszkiewicz, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/1390547.pdf
Data publikacji:: 2019-06-06
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: European pond turtle
animal’s trade
species’ decline
importance of historical sources in ecology
Opis:: A drastic decrease in the European pond turtle population occurred at the end of 18th century and during the first half of 19th century. The exploitation of this species, as a source of food and drug substances, is nowadays almost forgotten. The present paper aimed at, firstly, underlining some historical sources concerning the exploitation of the European pond turtle. Secondly, its goal is to answer the following question: to what extent did the exploitation of the species contribute to the decline of the population? The author concludes with the importance and necessity of historical and economic analysis in order to understand the phenomenon of the decline of the European pond turtle population. This research, which must be continued by historians, will help the naturalists in action to protect and reintroduce the species into its former geographical range.
Źródło:: Studia Historiae Oeconomicae; 2018, 36; 99-103
0081-6485
Pojawia się w:: Studia Historiae Oeconomicae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Basicladia chelonum [Collins] W.E.Hoffmann et Tilden [Chlorophyta, Cladophorophyceae] fron Cuba [Caribbean]: new observation of the ultrastructure of its vegetative cells
Autorzy:: Mrozinska, T
Czerwik-Marcinkowska, J.
Webb-Janich, M.
Powiązania:: https://bibliotekanauki.pl/articles/57776.pdf
Data publikacji:: 2009
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: Caribbean Region
taxonomy
alga
ultrastructure
Basicladia chelonum
Cuba
Chlorophyta
green alga
vegetative cell
turtle
Cladophorophyceae
Opis:: Basicladia chelonum (Collins) W.E. Hoffmann and Tilden (1930) principally known from North America and Hawaii was recently (2004) found in Cuba (Caribbean) from artificial pool growing on shells of musk turtles (Trachemys decussata Gray). Specimens collected in Cuba were subjected to detailed examinations also using a transmission electron microscope. On one hand, these studies confirmed many features of this species previously described by earlier authors in the specimens from Texas. On the other hand, the present studies revealed structures unknown so far (pyrenoid structure), which allowed for new analysis of this species. These investigations also have shown that Basicladia chelonum exhibits close similarity to the genus Cladophora and other representatives of the class Cladophorophyceae. The similarities include : siphonocladous level of organization of thallus, numerous chloroplasts forming a network and other structures. Conversely, the pyrenoid in vegetative cells of Basicladia chelonum distinguishes it markedly from representatives of the genus Cladophora, which have bilenticular pyrenoids divided into two hemispheres by a single thylakoids and each hemisphere is covered by a bowlshaped starch grain (Van Hoek et al. 1995). Since in Cladophora the ultrastructure of the pyrenoid is highly constant and characteristic, this contrasts with the genus Basicladia and, therefore, more firmly establishes position of the latter as an independent unit within Cladophorophyceae.
Źródło:: Acta Societatis Botanicorum Poloniae; 2009, 78, 1; 63-67
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: A new soft-shelled trionychid turtle of the genus Khunnuchelys from the Upper Cretaceous Bostobe Formation of Kazakhstan
Autorzy:: Danilov, I.G.
Vitek, N.S.
Averianov, A.O.
Glinskiy, V.N.
Powiązania:: https://bibliotekanauki.pl/articles/945569.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: paleontology
new species
soft-shelled turtle
Testudines
Trionychidae
Trionychia
Khunnuchelys lophorhothon
Upper Cretaceous
Cretaceous
Bostobe Formation
Kazakhstan
Opis:: Previously unpublished trionychid turtle material from the Upper Cretaceous (Santonian–lower Campanian) Bostobe Formation from the Baybishe and Baykhozha localities in Kazakhstan is described. The material represents a new species of Khunnuchelys, a large, skull-based clade of Cretaceous Asian trionychids. Concordant with other partial skulls and fragmentary specimens described previously, Khunnuchelys lophorhothon sp. nov. has the unusual features of a beaklike maxilla and a vaulted, expanded triturating surface. In addition, the specimens reveal novel features including a constricted skull roof. Although estimates of the length of the carapace differ depending on estimation method, the skull belonged to a turtle of comparable size to the shell-based species “Trionyx” kansaiensis from the same formation. It is likely that K. lophorhothon and “T.” kansaiensis are synonymous, but this can be proved only by a find of associated skull and shell material.
Źródło:: Acta Palaeontologica Polonica; 2015, 60, 1; 155-161
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: The cranial anatomy of the Early Jurassic turtle Kayentachelys aprix
Autorzy:: Sterli, J.
Joyce, W.G.
Powiązania:: https://bibliotekanauki.pl/articles/22757.pdf
Data publikacji:: 2007
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: cranial anatomy
Cryptodira
Testudines
Jurassic
Early Jurassic
turtle
Kayentachelys aprix
evolution
fossil record
Kayenta Formation
Arizona
paleontology
systematics
Opis:: The fossil turtle Kayentachelys aprix is known from Early Jurassic sediments of the Kayenta Formation, Arizona, USA. The detailed description of this taxon’s cranium offered in this paper demonstrates that this turtle presents a mixture of primitive and derived character states. Among others, the presence of an interpterygoid vacuity, a basipterygoid process, a prootic that is exposed in ventral view, and a foramen posterius canalis carotici interni that is formed entirely by the basisphenoid are generally considered primitive for turtles. On the other hand, the presence of an undivided apertura narium, a well developed cavum tympani, an incipient cavum postoticum, and an unpaired vomer are considered to be derived. Kayentachelys aprix has previously been hypothesized to be the oldest stem cryptodiran turtle because of the presence of a flat, vertical plate on the processus pterygoideus externus, and the presence of a processus trochlearis oticum. However, the presence of these characters cannot be confirmed in the available specimens. Other putative stemcryptodiran characters, such as the prefrontal−vomer contact and the presence of an epipterygoid, are herein corroborated as being symplesiomorphies, because they generally appear to be present in basal turtles.
Źródło:: Acta Palaeontologica Polonica; 2007, 52, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 16.

Tytuł:: Carapace bone histology in the giant pleurodiran turtle Stupendemys geographicus: phylogeny and function
Autorzy:: Scheyer, T M
Sanchez-Villagra, M.R.
Powiązania:: https://bibliotekanauki.pl/articles/20658.pdf
Data publikacji:: 2007
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: bone histology
Pleurodira
phylogenesis
bone analysis
Miocene
Stupendemys geographicus
Pelomedusoides
bone microstructure
giant pleurodiran turtle
Testudines
Bothremydidae
Podocnemidae
paleontology
Opis:: Stupendemys geographicus (Pleurodira: Pelomedusoides: Podocnemidae) is a giant turtle from the Miocene of Venezuela and Brazil. The bone histology of the carapace of two adult specimens from the Urumaco Formation is described herein, one of which is the largest of this species ever found. In order to determine phylogenetic versus scaling factors influencing bone histology, S. geographicus is compared with related podocnemid Podocnemis erythrocephala, and with fossil and Recent pelomedusoides taxa Bothremys barberi, Taphrosphys sulcatus, “Foxemys cf. F. mechinorum”, and Pelomedusa subrufa. Potential scaling effects on bone histology were further investigated by comparison to the Pleistocene giant tortoise Hesperotestudo (Caudochelys) crassiscutata and the Late Cretaceous marine protostegid turtle Archelon ischyros. A diploe structure of the shell with well developed external and internal cortices framing interior cancellous bone is plesiomorphic for all sampled taxa. Similarly, the occurrence of growth marks in the shell elements is interpreted as plesiomorphic, with the sampled neural elements providing the most extensive record of growth marks. The assignment of S. geographicus to the Podocnemidae was neither strengthened nor refuted by the bone histology. A reduced thickness of the internal cortex of the shell elements constitutes a potential synapomorphy of the Bothremydidae. S. geographicus and H. crassiscutata both express extensive weight−reduction through lightweightconstruction while retaining form stability of the shell. The bone histology of A. ischyros presents features likely related to an open marine lifestyle.
Źródło:: Acta Palaeontologica Polonica; 2007, 52, 1
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 17.

Tytuł:: Symbolika ptaków w "Enarrationes in Psalmos" świętego Augustyna
Symbolism of the Birds in "Enarrationes in Psalmos" of Saint Augustine
Autorzy:: Cieśluk, Marek
Powiązania:: https://bibliotekanauki.pl/articles/612416.pdf
Data publikacji:: 2008
Wydawca:: Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:: Augustyn
Enarrationes in Psalmos
ptak
symbolika
orzeł
kruk
pelikan
wróbel
synogarlica
Augustine
bird
simbolical meaning
eagle
pelican
tawny owl
sparrow
turtle dove
Opis:: The article discusses the symbolism of birds and shows how Augustine in his work "Enarrationes in Psalmos" uses in his pastoral work the appearing in the text references to such the birds: eagle, hen, pelican, tawny owl, sparrow and turtle dove. In explaining the texts of the Psalms, Augustine tries to relate their symbolic meanings, if possible, to Christ. In all the analyzed passages, we can see Bishop Hippo as a pastor who not only tries to explain the difficult texts of the Old Testament based on his knowledge, but also makes efforts that they best influence the Christians.
Artykuł omawia symbolikę ptaków i ukazuje w jaki sposób Augustyn w swym dziele "Enarrationes in Psalmos" wykorzystuje pojawiające się odniesienia do ptaków: orła, kokoszy, pelikana, puszczyka, wróbla i synogarlicy. Augustyn wyjaśniając teksty psalmów stara się dostrzeżone w nich symboliczne znaczenia odnieść, o ile to możliwe, do Chrystusa. We wszystkich analizowanych fragmentach możemy dostrzec biskupa Hippony jako duszpasterza, który nie tylko stara się w oparciu o posiadaną wiedzę tłumaczyć niełatwe teksty Starego Testamentu, ale dokłada też starań, aby jak najlepiej wpływały one na powierzonych jego opiece chrześcijan.
Źródło:: Vox Patrum; 2008, 52, 1; 87-98
0860-9411
2719-3586
Pojawia się w:: Vox Patrum
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:: Decompression syndrome and diving behavior in Odontochelys, the first turtle
Autorzy:: Rothschild, B.M.
Naples, V.
Powiązania:: https://bibliotekanauki.pl/articles/945596.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Testudines
Odontochelys semitestacea
turtle
diving behaviour
bone
pathology
avascular necrosis
osteonecrosis zob.avascular necrosis
bone infarction zob.avascular necrosis
aseptic necrosis zob.avascular necrosis
ischaemic bone necrosis zob.avascular necrosis
Triassic
Late Triassic
China
Opis:: Odontochelys semitestacea, the oldest known turtle, from the Late Triassic of China, shows a pathology. Sharply defined, focal depressions were noted on the articular surfaces of both humeri, documenting avascular necrosis. Diving habits of Mesozoic marine reptiles have been characterized on the basis of this localized form of bone death attributed to decompression syndrome. Pursuit by a predator was likely the cause of dangerously rapid depth changes by swimming turtles. The prevalence of avascular necrosis decreased geometrically from the Cretaceous to the Pleistocene. This study suggests that the habit of repetitive diving in turtles was already present in the Late Triassic, but that protective physiological and behavioral adaptations had not yet evolved.
Źródło:: Acta Palaeontologica Polonica; 2015, 60, 1; 163-167
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki