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    Wyświetlanie 1-9 z 9
    Tytuł:
    A new short-bodied salamander from the Upper Jurassic-Lower Cretaceous of China
    Autorzy:
    Wang, Y
    Evans, S.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/20232.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Lower Cretaceous
    Cretaceous
    China
    Upper Jurassic
    Pangerpeton sinensis
    deposit
    Jurassic
    salamander
    paleontology
    Opis:
    Abundant well−preserved salamander fossils have recently been recovered from localities across northeastern China. Pangerpeton sinensis gen. et sp. nov. is represented by a nearly complete skeletal impression of a postmetamorphosed salamander from the Late Jurassic/Early Cretaceous locality of Wubaiding, Liaoning Province. It is characterised by a short wide skull and only 14 presacral vertebrae. Associated soft tissue impressions suggest a warty skin and a broad body outline. Phylogenetic analysis indicates a basal position within Caudata, either just within or just outside crown−group Urodela.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Upper Jurassic Rudistae of the margin of the Holy Cross Mountains, Poland
    Rudistae górnej jury obrzeżenia Gór Świętokrzyskich
    Verkhnejurskie Rudistae obramlenija Swentokshiskikh Gor, Polsha
    Autorzy:
    Karczewski, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/21059.pdf
    Data publikacji:
    1969
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    Upper Jurassic
    Jurassic
    Rudistae
    Macrodiceras
    new genus
    phylogenesis
    pelecypod
    Holy Cross Mountains
    Polska
    Źródło:
    Acta Palaeontologica Polonica; 1969, 14, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new tritylodontid from the Upper Jurassic of Xinjiang, China
    Autorzy:
    Hu, Y
    Meng, J.
    Clark, J.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/22519.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    new tritylodontid
    tritylodontid
    Upper Jurassic
    Jurassic
    paleontology
    Xinjiang
    China
    Tritylodontidae
    Cynodontia
    cynodont
    Yuanotherium minor
    Opis:
    A new genus and species of Tritylodontidae, Yuanotherium minor, is described and compared with other known tritylodontids. The new taxon is represented by a partially preserved upper jaw with three postcanines, collected from the upper part of the Shishugou Formation (Oxfordian, Late Jurassic) in the Wucaiwan area of the Junggar Basin, northwestern Xinjiang, China. Like other tritylodontids its maxillary teeth have three rows of blade−like trenchant cusps separated by deep furrows. The new species differs from other tritylodontids mainly in having posteriormost two cusps of the median row on upper postcanines closely placed. The new tritylodontid may have been omnivorous rather than herbivorous, as previously suggested for tritylodontids in general.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 3; 385-391
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New finds of stegosaur tracks from the Upper Jurassic Lourinha Formation, Portugal
    Autorzy:
    Mateus, O.
    Milan, J.
    Romano, M.
    Whyte, M.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/22280.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    stegosaur
    new track
    Upper Jurassic
    Jurassic
    Lourinha Formation
    Portugal
    paleontology
    Deltapodus brodricki
    fossil record
    geological setting
    Opis:
    Eleven new tracks from the Upper Jurassic of Portugal are described and attributed to the stegosaurian ichnogenus Deltapodus. One track exhibits exceptionally well−preserved impressions of skin on the plantar surface, showing the stegosaur foot to be covered by closely spaced skin tubercles of ca. 6 mm in size. The Deltapodus specimens from the Aalenian of England represent the oldest occurrence of stegosaurs and imply an earlier cladogenesis than is recognized in the body fossil record.
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First record of the fossil dragonfly family Eumorbaeschnidae from the Upper Jurassic of Poland
    Autorzy:
    Bechly, G.
    Kin, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/20566.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    first record
    fossil
    dragonfly
    Eumorbaeschnidae
    Eumorbaeschna adriankini
    new species
    insect
    Odonata
    Anisoptera
    Aeshnoptera
    Upper Jurassic
    Jurassic
    Polska
    Opis:
    The fossil dragonfly Eumorbaeschna adriankini sp. nov. is decribed as first fossil insect from the Upper Jurassic of Central Poland (Owadów−Brzezinki quarry, Tomaszów Mazowiecki area), and as first record of the family Eumor− baeschnidae (Odonata, Anisoptera, Aeshnoptera) outside the Solnhofen lithographic limestone.
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new diplodocoid sauropod dinosaur from the Upper Jurassic Morrison Formation of Montana, USA
    Autorzy:
    Harris, J D
    Dodson, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/22659.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    phylogenesis
    Dicraeosauridae
    Diplodocoidea
    Upper Jurassic
    dinosaur
    Montana
    Jurassic
    paleobiogeography
    Diplodocidae
    USA
    sauropod dinosaur
    Dinosauria
    Morrison Formation
    paleontology
    Opis:
    A partial skeleton of a new sauropod dinosaur from the Upper Jurassic Morrison Formation (?Tithonian) of Montana is described. Suuwassea emilieae gen. et sp. nov. is diagnosed by numerous cranial, axial, and appendicular autapomorphies. The holotype consists of a premaxilla, partial maxilla, quadrate, braincase with partial skull roof, several partial and complete cranial and middle cervical, cranial dorsal, and caudal vertebrae, ribs, complete scapulocoracoid, humerus, partial tibia, complete fibula, calcaneus, and partial pes. It displays numerous synapomorphies of the Diplodocoidea, including characters of both the Diplodocidae (Apatosaurus + (Diplodocus + Barosaurus)) and Dicraeosauridae (Dicraeosaurus + Amargasaurus). Preliminary phylogenetic analysis indicates that Suuwassea is a diplodocoid more derived than rebbachisaurids but in a trichotomy with both the Diplodocidae and Dicraeosauridae. Suuwassea represents the first well−supported, North American, non−diplodocid representative of the Diplodocoidea and provides new insight into the origins of both the Diplodocidae and Dicraeosauridae.
    Źródło:
    Acta Palaeontologica Polonica; 2004, 49, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First evidence of a mamenchisaurid dinosaur from the Upper Jurassic-Lower Cretaceous Phu Kradung Formation of Thailand
    Autorzy:
    Suteethorn, S.
    Le Loeuff, J.
    Buffetaut, E.
    Suteethorn, V.
    Wongko, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/20480.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    first evidence
    mamenchisaurid dinosaur
    dinosaur
    Dinosauria
    Mamenchisauridae
    Jurassic
    Cretaceous
    Upper Jurassic
    Lower Cretaceous
    Phu Kradung Formation
    Thailand
    paleontology
    Opis:
    An isolated posterior cervical vertebra of a sauropod discovered at Phu Dan Ma (Kalasin Province, northeastern Thailand) is the first informative postcranial specimen from the Phu Kradung Formation, a Upper Jurassic to Lower Cretaceous continental unit. The vertebra is referred to the family Mamenchisauridae, otherwise mainly known from China. In addition, spatulate teeth from the same formation and a mid−dorsal vertebra from the Upper Jurassic Khlong Min Formation of southern Thailand are reassigned to this family. The occurrence of mamenchisaurids in the earliest Cretaceous of Thailand supports a hypothesis of geographical isolation of Central, Eastern, and Southeast Asia during the Late Jurassic. It also suggests that the main changes in their dinosaur assemblages occurred during the Early Cretaceous, rather than at the Jurassic–Cretaceous boundary.
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ecophenotypic plasticity versus evolutionary trends - morphological variability in Upper Jurassic bivalve shells from Portugal
    Autorzy:
    Schneider, S.
    Fursich, F.T.
    Schulz-Mirbach, F.T.
    Werner, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/23367.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    ecophenotype
    plasticity versus
    evolutionary trend
    morphological variability
    Upper Jurassic
    Jurassic
    bivalve shell
    shell
    Bivalvia
    morphometry
    Fourier shape analysis
    size increase
    Late Jurassic
    Portugal
    Opis:
    Upper Jurassic marginal marine strata of the Lusitanian Basin (central Portugal) yield a rich benthic macrofauna from which three bivalve target taxa, i.e., Arcomytilus, Isognomon, and Eomiodon, were chosen for morphometric studies, because of their abundance both in space and time and their variability in shell shape. The shells have been analysed with regard to outline shape (Fourier shape analysis), dimensions, ornamentation (Arcomytilus) and ligament arrangement (Isognomon). Additionally, data on co−occurring fauna and palaeotemperatures calculated from δ18O values have been recorded. The results of the morphometric analyses have been interpreted with regard to phylogeny and palaeoecology. In all target taxa, a distinct, rapid size increase at around the Early/Late Kimmeridgian boundary is evident. Potential causes for this process are discussed, and an increase in food availability is regarded the most likely scenario. In Isognomon rugosus, a distinct change in resilifer arrangement co−occurs with size increase, resulting in the evolution of an endemic species in the Lusitanian Basin, for which the name Isognomon lusitanicus is reestablished. Like in several extant Mytilidae, morphological species characterisation in Arcomytilus turns out unsatisfactory, due to high intraspecific variability. However, Arcomytilus morrisii is still regarded as a valid species that evolved in the Lusitanian Basin. Despite high shape variability, Eomiodon securiformis is also considered to be a clearly distinguished species. For all target taxa morphologic variability is discussed with regard to environment, and variation between populations is delineated. The data suggest a weak correlation of facies and shell shape in Arcomytilus, while Isognomon lusitanicus seems to develop local varieties in different subbasins. Finally, the great morphologic plasticity of bivalves from rather distinct systematic entities is shown to result from different causes, thus demonstrating that careful studies of the involved species are a prerequisite to draw correct palaeoecological conclusions.
    Źródło:
    Acta Palaeontologica Polonica; 2010, 55, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lower Tithonian microconchiate simoceratins from eastern Mexico: Taxonomy, biostratigraphy, and palaeobiogeography
    Autorzy:
    Villasenor, A.
    Oloriz, F.
    Gonzalez-Arreola, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/22008.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    biostratigraphy
    paleobiogeography
    paleontology
    taxonomy
    Mexico
    Eastern Mexico
    Ammonitina
    Pseudovolanoceras
    Tithonian
    Upper Jurassic
    Jurassic
    deposit
    Pseudovolanoceras aesinense
    Pseudovolanoceras aesinense chignahuapense
    new subspecies
    ammonite
    microconchiate simoceratin
    simoceratin
    Opis:
    The precise record of simoceratins sampled bed−by−bed is first reported from Mexico (Mazatepec area in Puebla, central−eastern Mexico), as well as the existence of lappeted peristomes in these ammonites. Both Pseudovolanoceras aesinense and the subspecies Pseudovolanoceras aesinense chignahuapense are shown to occur among Mexican simoceratins. The European species and the Mexican subspecies share the same stratigraphic range in the studied sections, yet they differ in ephebic sculpture. Ecological adaptation to neritic seas corresponding to eastern Mexico areas is interpreted, forcing phenotypic deviation with geographic significance, i.e., subspeciation. The new subspecies would indicate stratigraphic horizons within the Semiformiceras semiforme/Haploceras verruciferum Chronozone in the Mediterranean Tethys. A revision of contemporaneous simoceratins in the Americas is founded on a comparative analysis with respect to the European species P. aesinense.
    Źródło:
    Acta Palaeontologica Polonica; 2011, 56, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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