Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

New finds of stegosaur tracks from the Upper Jurassic Lourinha Formation, Portugal

100%

Mateus O., Milan J., Romano M., Whyte M. A.

Acta Palaeontologica Polonica

2011

tom 56

nr 3

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.

Crouching theropod and Navahopus sauropodomorph tracks from the Early Jurassic Navajo Sandstone of USA

100%

Milan J., Loope D. B., Bromley R. G.

Acta Palaeontologica Polonica

2008

tom 53

nr 2

Numerous tracks and trackways are preserved in the a cross−strata of the Lower Jurassic Navajo Sandstone of northern Arizona and southern Utah, USA. Tracks and trackways of small theropod dinosaurs are particularly abundant within one 10−m−thick interval. This paper describes a crouching trace from a theropod dinosaur that shows impressions of all four limbs, the ischial callosity, the tail, and tracks leading to and away from the crouching site, and revises the interpretation of a well preserved trackway hitherto referred to the synapsid ichnogenus Brasilichnium and here considered to be from a sauropodomorph dinosaur. It is named Navahopus coyoteensisisp. nov. on the basis of morphological differences from the type ichnospecies N. falcipollex. The ichnofamily Navahopodidae is revised to include Tetrasauropous unguiferus, Navahopus falcipollex, and N. coyoteensis.

Ograniczanie wyników

2 Acta Palaeontologica Polonica

2 Milan J.

1 Bromley R. G.

1 Loope D. B.

1 Mateus O.

1 Romano M.

1 Whyte M. A.

1 2011

1 2008

Wyniki wyszukiwania

New finds of stegosaur tracks from the Upper Jurassic Lourinha Formation, Portugal

Crouching theropod and Navahopus sauropodomorph tracks from the Early Jurassic Navajo Sandstone of USA