Results 111 to 120 of about 392 (145)

New Australian sauropods shed light on Cretaceous dinosaur palaeobiogeography. [PDF]

Sci Rep, 2016
Poropat SF, Mannion PD, Upchurch P, Hocknull SA, Kear BP, Kundrát M, Tischler TR, Sloan T, Sinapius GH, Elliott JA, Elliott DA.   +10 more
europepmc   +1 more source

Competition structured a Late Cretaceous megaherbivorous dinosaur assemblage. [PDF]

Sci Rep, 2019
Mallon JC.
europepmc   +1 more source

Ankylosaur

Hooper, E
core  

Skull of a Jurassic ankylosaur (Dinosauria)

Nature, 1998
The origin and early evolution of many major dinosaur groups are poorly known because specimens are rare. One of these groups, the Ankylosauria, or armour-plated dinosaurs, is best known from well-preserved specimens from the Upper Cretaceous period of Asia and North America.
Kenneth Carpenter
exaly   +3 more sources

Bizarre dermal armour suggests the first African ankylosaur

Nature Ecology & Evolution, 2021
Ankylosauria is a diverse clade of armoured dinosaurs whose members were important constituents of many Cretaceous faunas. Phylogenetic analyses imply that the clade diverged from its sister taxon, Stegosauria, during the late Early Jurassic, but the fossil records of both clades are sparse until the Late Jurassic (~150 million years ago).
Maidment, Susannah C R, Strachan, Sarah J, Ouarhache, Driss, Scheyer, Torsten M, Brown, Emily E, Fernandez, Vincent, Johanson, Zerina, Raven, Thomas J, Barrett, Paul M   +8 more
openaire   +5 more sources

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Pathological pitting in ankylosaur (Dinosauria) osteoderms

International Journal of Paleopathology, 2016
Large ulcerative pits on the external surface of ankylosaur (Dinosauria) osteoderms have been recognized for many years. They have been ascribed without supporting evidence to damage by predator teeth or to disease. The discovery of numerous examples of pitted osteoderms in a monospecific ankylosaur (Gastonia n.sp.) bone bed in eastern Utah (USA ...
Kenneth Carpenter
exaly   +3 more sources

A juvenile ankylosaur from China

Die Naturwissenschaften, 2001
Juvenile ankylosaur specimens are very rare. A new ankylosaur, Liaoningosaurus paradoxus gen. et sp. nov., is described based on a beautifully preserved juvenile ankylosaur specimen from the famous Yixian Formation of Liaoning, China. Liaoningosaurus has a large bony plate (somewhat shell-like) shielding the abdomen. This discovery represents the first
Xing Xu, Hai-Lu You, Lida Xing
exaly   +3 more sources

Extreme armour in the world’s oldest ankylosaur [PDF]

Nature
The armoured ankylosaurian dinosaurs are best known from Late Cretaceous Northern Hemisphere ecosystems, but their early evolution in the Early-Middle Jurassic is shrouded in mystery due to a poor fossil record1,2. Spicomellus afer was suggested to be the world's oldest ankylosaur and the first from Africa, but was based on only a single partial rib ...
Susannah C. R. Maidment, Driss Ouarhache, Kawtar Ech-charay, Ahmed Oussou, Khadija Boumir, Abdessalam El Khanchoufi, Alison Park, Luke E. Meade, D. Cary Woodruff, Simon Wills, Mike Smith, Paul M. Barrett, Richard J. Butler   +12 more
core   +5 more sources

Gut contents of a small ankylosaur

Journal of Vertebrate Paleontology, 2000
The diet of fossil vertebrates is usually inferred from the forms of the teeth, sometimes assisted by an analysis of the jaw mechanics. Although generally useful for distinguishing carnivores from herbivoresexcept for a few cases where the teeth reliably reflect a specific food, such as for fish-eating pterosaurs-this method doesn't identify either the
H Trevor Clifford
exaly   +2 more sources

Histology of ankylosaur osteoderms: implications for systematics and function

Journal of Vertebrate Paleontology, 2004
ABSTRACT Here, we provide a comparative survey of the histology of postcranial dermal-armor osteoderms of ankylosaurs, including material of polacanthids (Polacanthus foxii, Gastonia sp.), ankylosaurids (e.g., Saichania chulsanensis, Pinacosaurus grangeri, Ankylosauridae indet.), and nodosaurids (e.g., Struthiosaurus austriacus, Nodosauridae indet ...
Torsten M Scheyer, P Martin Sander
exaly   +2 more sources