Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "frog" wg kryterium: Temat

  Lista filtrów

Dostawca treści

Podbaza

Wyrównaj
Wyświetlanie 1-15 z 27
Tytuł:
Larval development in Oligocene palaeobatrachid frogs
Autorzy:
Rocek, Z
Powiązania:
https://bibliotekanauki.pl/articles/21425.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
anuran fauna
palaeobatrachid frog
Czech Republic
frog
Palaeobatrachidae
Anura
Oligocene
larval development
larva
paleontology
Opis:
A detailed account of the development of skeletal and some soft−tissue structures is based on 171 fossil tadpoles and metamorphosing froglets of Palaeobatrachus sp. from the Late Oligocene of the Czech Republic (locality Bechlejovice). Their exceptionally good preservation resulted from fossilization in diatomites. The fossil developmental series was compared with normal development of the contemporary anuran Xenopus laevis (Pipidae) represented by cleared and stained (alizarin/toluidin−blue) whole−mount specimens. The comparison revealed that in spite of differences in the sequence of ossification and its timing (e.g., ossification of the otic capsules and ribs was retarded in Xenopus whereas dermal ossification was retarded in Palaeobatrachus), in the number of free ribs, and in composition of the sacral region (the synsacrum in Palaeobatrachus involves two posterior presacrals, whereas there is a single sacral in Xenopus), both genera were similar in great number of anatomical features that appear during development. The most important difference is the shape of vertebral centrum (procoelous in Palaeobatrachus, opisthocoelous in all Pipidae) which is formed in comparatively early developmental stages. A view that could result from anatomical comparisons is that Palaeobatrachus could be derived from the Pipidae, but this is doubtful due to biostratigraphic and palaeogeographic discrepancies. The earliest palaeobatrachids were recorded from the Late Cretaceous of Europe but pipids could not invade northern continents after the Early Cretaceous when the Tethys Sea prevented interchanges of anuran faunas. Also, all palaeobatrachids retain primitive anatomical features (e.g., five pairs of ribs) that were more derived even in the earliest pipids from the Lower Cretaceous of Israel.
Źródło:
Acta Palaeontologica Polonica; 2003, 48, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Patterns of larval development in Cretaceous pipid frogs
Autorzy:
Rocek, Z
Van Dijk, E.
Powiązania:
https://bibliotekanauki.pl/articles/20793.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Cretaceous
Pipidae
pipid frog
frog
South Africa
Anura
Oligocene
larval development
Israel
paleontology
Opis:
A developmental series of nearly 250 tadpoles of Shomronella jordanica from the Early Cretaceous (Hauterivian) of the Shomron (Samaria) region of central Israel, a small collection (12) of Thoraciliacus rostriceps tadpoles from the Early Cretaceous (Aptian) of Makhtesh Ramon, Israel, and 13 tadpoles from the Late Cretaceous (Campanian/Maastrichtian boundary) of Stompoor, Marydale, South Africa were studied. These were compared with published data on the development of Paleogene (Middle Eocene–Early Oligocene) pipids from Patagonia, and with normal development of the contemporary pipid frog Xenopus. The comparisons of the developmental series of the Cretaceous and contemporary pipid frogs provided data on changes in the developmental pattern, namely of the degree of ossification and other developmental events. In general, it seems that ossification has become considerably delayed in the course of pipid evolution, whereas most anatomical features typical for free living pipid larvae were well established as early as in the Early Cretaceous. Comparisons with the developmental series of specimens from the Late Oligocene Palaeobatrachidae (closely related to the Pipidae) from Bechlejovice near Děčín, Czech Republic revealed that some morphological differences between the two families might be explained by their developmental mode (e.g., formation of the opisthocoelous vertebral centrum in Shomronella). The uncinate process on three anterior pairs of ribs in Shomronella is the character retained in primitive anurans, and indicates close phylogenetic relations of early pipoids to discoglossoids.
Źródło:
Acta Palaeontologica Polonica; 2006, 51, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A glimpse at the ontogeny of the fossil neobatrachian frog Calyptocephalella canqueli from the Deseadan (Oligocene) of Patagonia, Argentina
Autorzy:
Muzzopappa, P.
Nicoli, L.
Powiązania:
https://bibliotekanauki.pl/articles/20186.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
ontogenesis
paleontology
fossil
neobatrachian frog
frog
Calyptocephalella canqueli
Anura
Neobatrachia
Australobatrachia
Calyptocephalella
osteogenesis
Cenozoic
Deseadan
Oligocene
Patagonia
Argentina
Opis:
Two fossil tadpoles collected in the Deseadan levels (Oligocene) at the Scarritt Pocket locality of central Patagonia are studied herein. These specimens, which show different degrees of skeletal development, have been assigned to the neobatrachian Calyptocephalella canqueli based on the morphology of the frontoparietals and the presence of adult specimens of this fossil species at the same locality. The concurrent analysis of three developmental stages (Gosner Stages 35/36 and 38/39, and adult) has provided significant data about the ontogeny of this species, including the change of the pattern of exostosis of the frontoparietals, from a pitted to a tuberculated pattern, and the corroboration of the inclusion of two neural arches in the formation of the urostyle. This evidence will shed light on developmental mechanisms that might be involved in the evolution of the genus Callyptocephalella.
Źródło:
Acta Palaeontologica Polonica; 2010, 55, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antimicrobial activity of leaf and flower extracts of Lippia nodiflora L. (Verbenacea)
Autorzy:
Zare, Z.
Majd, A.
Sattari, T.N.
Iranbakhsh, A.
Mehrabian, S.
Powiązania:
https://bibliotekanauki.pl/articles/66574.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antimicrobial activity
leaf
flower
plant extract
Lippia nodiflora
Verbenacea
frog fruit
sawtooth fogfruit zob.frog fruit
Turkey tangle zob.frog fruit
Phyla nodiflora zob.Lippia nodiflora
medicinal plant
bacteria
fungi
Opis:
Antimicrobial activities of the methanolic extracts from the leaves and flowers of Lippia nodiflora L. (Verbenaceae), were studied by the disk diffusion method. The extracts showed antimicrobial impact on bacteria such as Bacillus subtilis, B. cereus, Micrococcus luteus, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumonia, K. oxytoca and Esherichia coli as well as fungi such Aspergillus niger and Candida albicanse. The results showed that increasing concentrations of extracts increased the antimicrobial activities in all of the microorganisms. Bacteria were more sensitive than fungi, and gram positive bacteria were more sensitive than gram negative ones.
Źródło:
Journal of Plant Protection Research; 2012, 52, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The oldest representative of a brown frog [Ranidae] from the Early Miocene of Germany
Autorzy:
Bohme, M
Powiązania:
https://bibliotekanauki.pl/articles/21148.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Miocene
new fossil
locality
frog
Germany
morphology
Early Miocene
stratigraphy
Ranidae
brown frog
Europe
Late Pliocene
paleontology
Rana temporaria
Opis:
The brown frogs (Rana temporaria-group) are a monophyletic group in the family Ranidae, which have a scarce fossil record in Europe that begins only in the Late Pliocene. A new fossil from the Dietrichsberg locality (Germany, Thuringia) extends their stratigraphic range back to the Early Miocene, and suggests that their origin lies outside the Western Palaearctic, most probably in Asia, with subsequent immigration in the Burdigalian.
Źródło:
Acta Palaeontologica Polonica; 2001, 46, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parasite fauna of alimentary tracts of frogs of the family Ranidae from Polish Western Pomerania
Autorzy:
Pilecka-Rapacz, M.
Powiązania:
https://bibliotekanauki.pl/articles/838280.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Pomeranian region
Ranidae
Polska
frog
gastrointestinal tract
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new helmeted frog of the genus Thaumastosaurus from the Eocene of England
Autorzy:
Holman, J A
Harrison, D.L.
Powiązania:
https://bibliotekanauki.pl/articles/20047.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Thaumastosaurus
Eocene
Thaumastosaurus bottii
England
frog
Thaumastosaurus wardi
paleontology
Opis:
Helmeted frogs with co−ossified skulls (Thaumastosaurus) were previously known in Europe only in the Eocene on the basis of Thaumastosaurus bottii from southwestern France and Thaumastosaurus wardi from coastal southern England. We describe Thaumastosaurus sulcatus, that differs from these species in having a different dermal sculpture pattern and tooth morphology. We suggest that the auburn colored tooth crown tips in T. sulcatus, as in some other vertebrates, reflect extra hardness for protection against tooth wear. Autochthonous Thaumastosaurus species in southern England support the concept that southern England and southwestern France were distinct faunal provinces in the Late Eocene.
Źródło:
Acta Palaeontologica Polonica; 2003, 48, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Irreversible blocking of polar excitations on frog sciatic nerve using semiconductor pulse laser irradiation
Autorzy:
Hirayama, Y.
Ishizuka, S.
Yamakawa, T.
Powiązania:
https://bibliotekanauki.pl/articles/385078.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
irreversible blocking
semiconductor pulse Laser Irradiation
frog sciatic nerve
Opis:
The final purpose of our research is to cripple the epileptogenic focus by laser irradiation. However, the effect of laser irradiation on brain nerves is not well known. In this paper, we observed laser irradiation to the transmission of action potential of a bullfrog sciatic nerve in the experiment. In addition the marginal amplitude of laser energy is obtained. The bullfrog nerve preparations were stimulated supramaximal intensity pulse. The pulse width and the pulse interval are 1 msec and 1 sec, respectively. A semiconductor pulse laser irradiation (the wavelength, the pulse width and the frequency are 808 nm, 990 µsec and 50 Hz, respectively) was employed until when the amplitude of the action potential decreases to 10 %. The laser light was irradiated to the portion between two electrode pairs for recording. The energy of the laser is variable between 13.9- 202.5 mJ/cm2. The laser irradiator is connected to an optical fiber whose diameter is 1 mm. The action potential of the sciatic nerve is observed at 1 day after in order to confirm irreversibility. The experiment was delivered by the laser pulse, the energy of which over 32.9 mJ/cm2. The peak of action potential was decreased gradually by laser irradiation with depending on the time of irradiation. The time to blocking is reciprocally proportional to laser energy. At a day after the experiment, the action potential was not recovered. This result shows the laser irradiation give irreversible blocking to polar excitations. We observed the frog sciatic nerve is damaged by laser irradiation. The results show a possibility that the epileptogenic focus can be crippled by laser irradiation. We are going to have more experiments and obtain important laser parameters. In the future, the experiment and the result are expanded using rat brain and applied human surgery.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 210-212
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The 35 kDa acid metallophosphatase of the frog Rana esculenta liver: studies on its cellular localization and protein phosphatase activity.
Autorzy:
Szalewicz, Agata
Strzelczyk, Barbara
Sopel, Mirosław
Kubicz, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/1043638.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
metallophosphatase
acid phosphatase
frog liver
protein phosphatase
tyrosine protein phosphatase
Opis:
The cellular localization of the 35 kDa, low molecular mass acid metallophosphatase (LMW AcPase) from the frog (Rana esculenta) liver and its activity towards P-Ser and P-Tyr phosphorylated peptides were studied. This enzyme was localized to the cytoplasm of hepatocytes but did not appear in other cells of liver tissue (endothelium, macrophages, blood cells). This LMW AcPase does not display activity towards 32P-phosphorylase a under conditions standard for the enzymes of PPP family. Proteins containing P-Ser: rabbit 32P-phosphorylase a and phosvitin are hydrolysed only at acidic pH and are poor substrates for this enzyme. The frog AcPase is not inhibited by okadaic acid and F- ions, the Ser/Thr protein phosphatase inhibitors. Moreover, the frog enzyme does not cross-react with specific antisera directed against N-terminal fragment of human PP2A and C-terminal conserved fragment of the eukaryotic PP2A catalytic subunits. These results exclude LMW AcPase from belonging to Ser/Thr protein phosphatases: PP1c or PP2Ac. In addition to P-Tyr, this enzyme hydrolyses efficiently at acidic pH P-Tyr phosphorylated peptides (hirudin and gastrin fragments). Km value for the hirudin fragment (7.55 ± 1.59 × 10-6 M) is 2-3 orders of magnitude lower in comparison with other substrates tested. The enzyme is inhibited competitively by typical inhibitors of protein tyrosine phosphatases (PTPases): sodium orthovanadate, molybdate and tungstate. These results may suggest that the LMW AcPase of frog liver can act as PTPase in vivo. A different cellular localization and different response to inhibition by tetrahedral oxyanions (molybdate, vanadate and tungstate) provide further evidence that LMW AcPase of frog liver is distinct from the mammalian tartrate-resistant acid phosphatases.
Źródło:
Acta Biochimica Polonica; 2003, 50, 2; 555-566
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
One Hundred Frogs in Steve McCaffery’s The Basho Variations
Autorzy:
Kocot, Monika
Powiązania:
https://bibliotekanauki.pl/articles/2032692.pdf
Data publikacji:
2021-11-22
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
haiku
frog
Steve McCaffery
Matsuo Bashō
translation
transcreation
transtranslation
event
Opis:
The article discusses Steve McCaffery’s The Basho Variations with a focus on various modes of transtranslation/transcreation/transaption of Matsuo Bashō’s famous frog haiku. The emphasis is placed on the complexities (of the processuality) of transtranslation which deliberately alters, distorts and reimagines the source text. The intercultural and intertextual quality of McCaffery’s poems is discussed in the context of multilevel references to classical Japanese aesthetics of haiku writing. The comparative reading of McCaffery’s and Bashō’s texts foregrounds the issue of events, or “frogmentary events,” and the importance of the role of the reader in completing poetic messages.
Źródło:
Text Matters: A Journal of Literature, Theory and Culture; 2021, 11; 369-388
2083-2931
2084-574X
Pojawia się w:
Text Matters: A Journal of Literature, Theory and Culture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Określanie parametrów modelowania geometrii krzyżownic rozjazdów zwyczajnych dla potrzeb budowy i utrzymania linii kolejowych
Determining the parameters of modelling of switch frog geometry for building and maintenance of railway lines
Autorzy:
Omieczyński, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/248808.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:
rozjazdy kolejowe
metody numeryczne
krzyżownica
railway turnouts
numerical modelling
switch frog
Opis:
Zdecydowana większość rozjazdów występująca na liniach kolejowych w Polsce to rozjazdy zwyczajne o typowym zestawie parametrów. Z tego powodu analiza przypadków nietypowych (takich jak rozjazdy o zmiennej krzywiźnie toru zwrotnego) może być utrudniona. Wirtualny model geometryczno-konstrukcyjny rozjazdu, generowany w oparciu o metody analityczne, stanowić może narzędzie użyteczne w sferze projektowania, konstrukcji oraz diagnostyki rozjazdu wbudowanego w tor. W artykule zaprezentowano główne założenia dotyczące modelowania rozjazdów, ustalono zakres niezbędnych danych wejściowych. Przedstawiono przykłady parametryzacji elementu krzyżownicy w kontekście geometrycznym oraz konstrukcyjnym (projektowanie krzyżownicy zwyczajnej rozjazdu oraz problem doboru wariantu przytwierdzenia w rejonie montażu krzyżownicy). W podsumowaniu przedstawiono możliwości i kierunki dalszej rozbudowy modelu.
The vast majority of turnouts located on railway lines in Poland have typical set of parameters. For this reason, the analysis of non-typical cases (such as turnouts with variable curvature) might be difficult. The idea of the work is to create an analytical based tool useful in the issue of designing, construction and diagnostics. This might be performed by the virtual structural model of the turnout. The article presents the main assumptions regarding the modelling of turnouts. Examples of the parameterization of the crossing element are presented (design of the frog area and the problem of fastening variant selection). The summary presents the possibilities and directions for further development of the model.
Źródło:
Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne; 2019, 2(119); 169-184
1231-9171
Pojawia się w:
Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sequence optimization of hole-making operations for injection mould using shuffled frog leaping algorithm with modification
Autorzy:
Dalavi, A. M.
Pawar, P. J.
Singh, T. P.
Powiązania:
https://bibliotekanauki.pl/articles/407274.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hole-making operations
injection mould
shuffled frog leaping algorithm with modification
Opis:
Tool travel and tool switch planning are the two major issues in hole-making operations of industrial part which involves drilling, tapping etc. operations. It is necessary to find the sequence of operations, which minimizes the total non productive time and tool switch time of hole-making operations depending upon the hole location and the tool sequence to be followed. In this work, an attempt is made to reduce total non-productive time and tool switch time of hole-making operations by applying a relatively new algorithm known as shuffled frog leaping with modification for the determination of optimal sequence of operations. In order to validate the developed shuffled frog leaping algorithm with modification, it is applied on six different problems of holes and its obtained results are compared with dynamic programming (DP), ant colony algorithm (ACO), and immune based evolutionary approach (IA). In addition, an application example of injection mould is considered in this work to demonstrate the proposed approach. The result obtained by shuffled frog leaping algorithm with modification is compared with those obtained using ACO, particle swarm optimization (PSO) algorithm and IA. It is observed that the results obtained by shuffled frog leaping algorithm with modification are superior to those obtained using ACO, PSO and IA for the application example presented.
Źródło:
Management and Production Engineering Review; 2018, 9, 3; 71-78
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cooking methods and medicinal uses of frog species among the Naga tribes in Dimapur
Autorzy:
Talukdar, Sagarika
Sengupta, Saibal
Konyak, Manngam
Shunye, Shunye
Rizwan, Md.
Powiązania:
https://bibliotekanauki.pl/articles/1031865.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Amphibia
Naga tribes
Nagaland
biodiversity
frog species
medicinal value
sustainable management
traditional knowledge
Opis:
Amphibia is a class of vertebrate. Amphibians are ectothermic, or cold-blooded, and they have smooth skin that must stay moist to prevent desiccation. They play an important role in nature both, as predator and prey. Nagaland is one of the north eastern hilly states and it is very rich in biodiversity. Due to the geographical position, Nagaland has a huge number of amphibian fauna. Purpose of the present study is to get information of sociocultural relation of frog and Naga people and to study the diversity. Study was conducted through the market survey and interview. Interview was conducted among the people of different age groups which are belonging to different tribes. Frog species were collected from the markets and Morphometric measurements were taken by using a vernier caliper. Frog samples were kept as museum specimen. From the investigation, all together 11 species from 4 families were recorded from the market and identified with the help of relevant literature. Cooking procedure of frog meat among the people of Nagaland varies from tribe to tribe and people to people. Most common method of consumption is boiling with bamboo shoot. Naga people have traditional believe that frogs have medicinal purposes. Different body parts of the frog are consumed by different way to cure the various diseases. Frog eating is a traditional way and continued practice among the Naga society from the time of civilization to obtain the protein, and frogs are easily available in the markets in both, as fresh and dried. Frogs are being exploited from nature from year after year without having proper maintenance and conservation. The results of the study revealed that there is no reduction in frog population, though they are being collected in a huge number. It is necessary to culture the frog species and to establish socio-ecological system through a sustainable management and conservation of biodiversity.
Źródło:
World News of Natural Sciences; 2020, 30, 2; 144-149
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The scapulocoracoid of an Early Triassic stem-frog from Poland
Autorzy:
Borsuk-Bialynicka, M
Evans, S.E.
Powiązania:
https://bibliotekanauki.pl/articles/20856.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
scapulocoracoid
Triassic
Polska
pectoral girdle
Anura
Triadobatrachus
stem-frog
Salientia
Early Triassic
paleontology
Czatkowice
Opis:
The scapulocoracoid of Czatkobatrachus polonicus Evans and Borsuk−Białynicka, 1998, a stem−frog from the Early Triassic karst locality of Czatkowice (Southern Poland), is described. The overall type of scapulocoracoid is plesiomorphic, but the subcircular shape and laterally oriented glenoid is considered synapomorphic of Salientia. The supraglenoid foramen is considered homologous to the scapular cleft of the Anura. In Czatkobatrachus, the supraglenoid foramen occupies an intermediate position between that of the early tetrapod foramen and the scapular cleft of Anura. The cleft scapula is probably synapomorphic for the Anura. In early salientian phylogeny, the shift in position of the supraglenoid foramen may have been associated with an anterior rotation of the forelimb. This change in position of the forelimb may reflect an evolutionary shift from a mainly locomotory function to static functions (support, balance, eventually shock−absorption). Laterally extended limbs may have been more effective than posterolateral ones in absorbing landing stresses, until the specialised shock−absorption pectoral mechanism of crown−group Anura had developed. The glenoid shape and position, and the slender scapular blade, of Czatkobatrachus, in combination with the well−ossified joint surfaces on the humerus and ulna, all support a primarily terrestrial rather than aquatic mode of life. The new Polish material also permits clarification of the pectoral anatomy of the contemporaneous Madagascan genus Triadobatrachus.
Źródło:
Acta Palaeontologica Polonica; 2002, 47, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early Eocene frogs from Vastan Lignite Mine, Gujarat, India
Autorzy:
Folie, A.
Rana, R.S.
Rose, K.D.
Sahni, A.
Kumar, K.
Singh, L.
Smith, T.
Powiązania:
https://bibliotekanauki.pl/articles/20353.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Amphibia
Bombinatoridae
Ranidae
Pelobatidae
Rhacophoridae
Eocene
Early Eocene
frog
Vastan Lignite Mine
Gujarat
India
Opis:
The Ypresian Cambay Shale Formation of Vastan Lignite Mine in Gujarat, western India, has yielded a rich vertebrate fauna, including the earliest modern mammals of the Indian subcontinent. Here we describe its assemblage of four frogs, including two new genera and species, based on numerous, diverse and well−preserved ilia and vertebrae. An abundant frog, Eobarbourula delfinoi gen. and sp. nov., with a particular vertebral articulation similar to a zygosphene−zygantrum complex, represents the oldest record of the Bombinatoridae and might have been capable of displaying the Unken reflex. The large non−fossorial pelobatid Eopelobates, known from complete skeletons from the Eocene and Oligocene of Europe, is also identified at Vastan based on a single nearly complete ilium. An abundant “ranid” and a possible rhacophorid Indorana prasadi gen. and sp. nov. represent the earliest records of both families. The Vastan pelobatids and ranids confirm an early worldwide distribution of these families, and the bombinatorids and rhacophorids show possible origins of those clades on the Indian subcontinent.
Źródło:
Acta Palaeontologica Polonica; 2013, 58, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 27

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies