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Wyszukujesz frazę "Zamora, S." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-10 z 10
    Tytuł:
    The oldest isorophid edrioasteroid [Echinodermata] and the evolution of attachment strategies in Cambrian edrioasteroids
    Autorzy:
    Zamora, S
    Smith, A.B.
    Powiązania:
    https://bibliotekanauki.pl/articles/20753.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    isorophid edrioasteroid
    Echinodermata
    evolution
    attachment strategy
    Cambrian
    edrioasteroid
    Isorophida
    Edrioasteroidea
    Spain
    Opis:
    Two new middle Cambrian edrioasteroid (Echinodermata), Protorophus hispanicus gen. et sp. nov., and Isorophida gen. et sp. indet., are described from the early middle Cambrian (Cambrian Series 3, Stage 5) of Spain. These are the oldest and probably the most primitive isorophids, a clade previously known from the upper Cambrian onwards. Specimens are attached to trilobite fragments indicating that edrioasteroids had by this time separated into two lineages each with different strategies for attachment, sediment attachers and hard substrate attachers. The single U−shaped ambulacral flooring plates of Protorophus are unique while Isorophida gen. et sp. indet. shares the presence of spines in common with some pyrgocystitid isorophids. The shift from facultative soft−bottom attachment to obligate hard−ground attachment in edrioasteroids involved the retention of a juvenile trait into adulthood and was already underway by the middle Cambrian.
    Źródło:
    Acta Palaeontologica Polonica; 2010, 55, 3; 487-494
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new Middle Cambrian stem-group echinoderm from Spain: Palaeobiological implications of a highly asymmetric cinctan
    Autorzy:
    Zamora, S
    Smith, A.B.
    Powiązania:
    https://bibliotekanauki.pl/articles/22838.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleobiology
    new species
    Homostelea
    Spain
    paleontology
    Echinodermata
    functional morphology
    asymmetric body
    Middle Cambrian
    echinoderm
    Lignanicystis barriosensis
    carpoid
    Opis:
    A new exquisitely preserved stem group echinoderm (cinctan), Lignanicystis barriosensis gen. et sp. nov., is described from the Middle Cambrian of Los Barrios de Luna, North Spain. This displays a unique asymmetrical body plan with ventral projecting nodes that raised the lower surface above the substratum. There are four openings through the body wall: mouth, anus, atrium, and an aligned row of sutural pores of uncertain function. Unlike other cinctans, Lignanicystis has a strongly asymmetrical shape convergent with that of some cornute carpoids. Like cornutes, the test is also elevated above the substratum to allow water flow beneath the theca. In both cases this is probably an adaptation to life in higher water flow regimes.
    Źródło:
    Acta Palaeontologica Polonica; 2008, 53, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Middle Cambrian gogiid echinoderms from Northeast Spain: Taxonomy, palaeoecology, and palaeogeographic implications
    Autorzy:
    Zamora, S
    Gozalo, R.
    Linan, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/21902.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    Middle Cambrian
    gogiid echinoderm
    Spain
    taxonomy
    paleoecology
    paleogeography
    Gogia parsleyi
    echinoderm assemblage
    Echinodermata
    Murero Formation
    Eocrinoidea
    Gogia
    Gogiida
    Opis:
    Gogia parsleyi Zamora sp. nov. and Gogia sp. are described from two different echinoderm assemblages, both from the middle Cambrian of the Murero Formation (Iberian Chains, NE Spain). Gogia parsleyi is reconstructed and described on the basis of fifteen complete or partial specimens and numerous isolated plates. It is characterised by spiralled brachioles, simple epispires, sometimes covered by stereomic domes or tiny cover plates, and by thecal plates arranged in subregular circlets. This gogiid population comprises juveniles, advanced juveniles and mature individuals. The material was found in the upper part of the Murero Formation (upper Caesaraugustian–lower Languedocian). Gogia sp. is represented by two almost complete specimens and several isolated plates from the lower part of the Murero Formation (lower Caesaraugustian). The genus Gogia was first described in Western Gondwana from the Languedocian (upper middle Cambrian) of France, but the material from Spain is older and represents the oldest record of this genus in Gondwana, suggesting an early migration from Laurentia. The gogiids are well preserved in two echinoderm Lagerstätten, which, together with other echinoderms, comprise the majority of the fossil fauna. Both levels are derived from obrution deposits produced in calm and open marine conditions, sometimes affected by sporadic storms. Their holdfast morphology suggests that these gogiids were low−tier suspension feeders, living attached to trilobite fragments in a soft, muddy environment.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 2; 253-265
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphology and palaeoecology of a new edrioblastoid from the Furongian of China
    Autorzy:
    Zhu, X.-J.
    Zamora, S.
    Lefebvre, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/20097.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Opis:
    A new edrioblastoid Cambroblastus guolensis is described from the Furongian (late Cambrian) Sandu Formation (South China). This represents the second occurrence of a Cambrian edrioblastoid, and the first ever reported from Asia, extending the palaeogeographic range of this very rare echinoderm grade. Surprisingly it preserves a complete stem and a distal holdfast suggesting edrioblastoids were hard substrate attachers living in soft bottom quiet environments.
    Źródło:
    Acta Palaeontologica Polonica; 2014, 59, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A revaluation of rhipidocystid echinoderms based on a new flattened blastozoan from the Upper Ordovician of Maryland, USA
    Autorzy:
    Zamora, S.
    Sprinkle, J.
    Sumrall, C.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082230.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Echinodermata
    Blastozoa
    Rhipidocystidae
    Paleozoic
    Chambersburg Formation
    North America
    Opis:
    A new rhipidocystid echinoderm from the Upper Ordovician Chambersburg Formation in western Maryland (USA) is here described based on four exquisitely preserved specimens. Specimens of Durhamicystis americana gen. et sp. nov. preserve both thecal sides and the oral area, with identification of major apertures including peristome, periproct, gonopore, and hydropore. This allows orientation of this species and proper comparison across all rhipidocystids. Durhamicystis americana has a large theca composed of ten marginal plates with only two basals on the posterior side, two ambulacra and seven large oral plates with brachioles attached either on orals or smaller flooring plates. Rhipidocystids include taxa with lateral flattening along the BC-DE axis (i.e., Rhipidocystis) and others along the anterior-posterior A-CD axis (i.e., Durhamicystis, Neorhipidocystis, and Petalocystites) suggesting rhipidocystids may be paraphyletic.
    Źródło:
    Acta Palaeontologica Polonica; 2020, 65, 3; 455-465
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphology and ecological setting of the basal echinoid genus Rhenechinus from the early Devonian of Spain and Germany
    Autorzy:
    Smith, A.B.
    Reich, M.
    Zamora, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/22487.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Opis:
    Based on new material from Germany and Spain, the echinoid “Lepidocentrus” ibericusfrom the Early Devonian (Emsian) of northern Spain is shown to be congeneric with Rhenechinusfrom the Hunsrück Slate of south−western Germany. New information on the lantern, pedicellariae and internal structure of the theca is provided, and confirms this genus as a member of the Echinocystitidae–Proterocidaridae clade and the most primitive of all Devonian echinoids. The two environmental settings in which Rhenechinus is found are very different: the Spanish specimens come from a relatively shallow−water bryozoan meadow setting while the German specimens are preserved in a deep−water setting. We deduce that the rare echinoid specimens from the Hunsrück Slate are all allochthonous, whereas the Spanish material is preserved in situ.
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphology and ontogeny of the Cambrian edrioasteroid echinoderm Cambraster cannati from western Gondwana
    Autorzy:
    Zamora, S.
    Sumrall, C.D.
    Vizcaino, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/21463.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Echinodermata
    Edrioasteroidea
    paleobiology
    Cambrian
    Spain
    France
    morphology
    ontogenesis
    edrioasteroid echinoderm
    echinoderm
    Cambraster cannati
    Gondwana
    Opis:
    A review of the Cambrian edrioasteroid echinoderm Cambraster cannati is made based on new collections from the Iberian Chains (NE Spain) and Montagne Noire (France). New morphological data include a completely articulated oral area and details of ambulacra. Specimens ranging from 4 to 26 mm in diameter provide detailed information concerning the full ontogeny. Important changes through ontogeny mainly affect the marginal ring and the plating pattern of the aboral surface. Comparison with other species of Cambrasterindicates that the aboral surface of Cambraster tastudorum from Australia shows strong resemblance to juvenile specimens of C. cannati. Cambraster cannati was attached directly to the substrate and inhabited relatively high energy, offshore environments from the west margin of Gondwana. Abnormalities in the skeleton are described for the first time in a Cambrian edrioasteroid.
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The youngest ctenocystoids from the Upper Ordovician of the United Kingdom and the evolution of the bilateral body plan in echinoderms
    Autorzy:
    Rahman, I.A.
    Stewart, S.E.
    Zamora, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/945494.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Echinodermata
    Ctenocystoidea
    evolution
    bilateral symmetry
    Ordovician
    ctenocystoid
    Upper Ordovician
    United Kingdom
    bilateral body
    echinoderm
    Opis:
    During the early Palaeozoic, echinoderm body plans were much more diverse than they are today, displaying four distinct types of symmetry. This included the bilateral ctenocystoids, which were long thought to be restricted to the Cambrian. Here, we describe a new species of ctenocystoid from the Upper Ordovician of Scotland (Conollia sporranoides sp. nov.). This allows us to revise the genus Conollia, which was previously based on a single poorly-known species from the Upper Ordovician of Wales (Conollia staffordi). Both these species are characterized by a unique morphology consisting of an elongate-ovoid body covered in spines, which clearly distinguishes them from their better-known Cambrian relatives; they are interpreted as infaunal or semi-infaunal burrowers from deep-water environments. This indicates that the ctenocystoid body plan was not fixed early in the evolution of the group, and they most likely modified their structure as an adaptation to a new mode of life in the Ordovician.
    Źródło:
    Acta Palaeontologica Polonica; 2015, 60, 1; 39-48
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental distribution of post-Palaeozoic crinoids from the Iberian and south-Pyrenean basins, NE Spain
    Autorzy:
    Zamora, S.
    Aurell, M.
    Veitch, M.
    Saulsbury, J.
    Lopez-Horgue, M.A.
    Ferratges, F.A.
    Arz, J.A.
    Baumiller, T.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/22586.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Opis:
    Post-Palaeozoic crinoids from northeast Spain ranging from the Ladinian (Middle Triassic) to the Ilerdian (lower Ypresian, early Eocene) are documented. Here we provide the first attempt to reconstruct the environmental distribution of these crinoids based on relatively complete material (mostly cups). Triassic forms are dominated by encrinids from outer carbonate ramps. Late Jurassic crinoids are dominated by cyrtocrinids, comatulids, millericrinids, and isocrinids, occurring either on sponge mounds and meadows or on soft substrates within middle to outer carbonate ramps. Aptian (Early Cretaceous) forms include nearly complete isocrinids which are found in extremely shallow environments represented by bioclastic carbonates and interspersed oyster-rich layers. Other Aptian occurrences come from more distal and deep environments and are composed solely of comatulids. Albian forms are dominated by cyrtocrinids and isocrinids associated with coral reefs. Late Cretaceous and Eocene crinoids include mostly bourgueticrinids (Comatulida) that are found either in outer ramp facies or associated with mid-ramp reef complexes. The later corresponds to one of the shallowest occurrence of bourgueticrinids in the Cenozoic. The palaeoecological data for fossil crinoids of northeast Spain contributes to reconstructing the history of the bathymetric distribution of articulate crinoids, supporting the idea that stalked crinoids were able to inhabit a wide range of shallow marine environments in the late Mesozoic and early Cenozoic.
    Źródło:
    Acta Palaeontologica Polonica; 2018, 63, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    W sprawie Heliodorów
    On the question of the Heliodors
    Autorzy:
    Zieliński, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/16729550.pdf
    Data publikacji:
    2020-05-07
    Wydawca:
    Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
    Tematy:
    Heliodor Jankowski
    Heliodor Rochlitz
    Marcella
    Le Tribut de Zamora
    Pierre Guillaume Frédéric Le Play
    Unions de la paix sociale
    Antoni Kątski
    Charles Gounod
    Zakład św. Kazimierza
    St. Casimir’s Institute
    Opis:
    The article tries to explain the presence among Norwid’s acquaintances of two people who had the extremely rare first name Heliodor (Heliodor Jankowski, Heliodor Rochlitz). It is also connected with Antoni Kątski’s opera Marcella, whose libretto was translated into Polish by Norwid, with the complicated fortunes of the Rochlitz family and name, and with the Unions for Social Peace (Unions de la paix sociale).
    Źródło:
    Studia Norwidiana; 2014, 32; 183-191
    0860-0562
    Pojawia się w:
    Studia Norwidiana
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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