Results 171 to 180 of about 3,472 (207)
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2018
Published as part of Jonathan P. Tennant, Alfio Alessandro Chiarenza & Matthew Baron, 2018, How has our knowledge of dinosaur diversity through geologic time changed through research history?, pp.
Jonathan P. Tennant +2 more
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Published as part of Jonathan P. Tennant, Alfio Alessandro Chiarenza & Matthew Baron, 2018, How has our knowledge of dinosaur diversity through geologic time changed through research history?, pp.
Jonathan P. Tennant +2 more
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The Phylogeny of Ceratosauria (Dinosauria: Theropoda)
Journal of Systematic Palaeontology, 2008Synopsis Recent discoveries and analyses have drawn increased attention to Ceratosauria, a taxonomically and morphologically diverse group of basal theropods. By the time of its first appearance in the Late Jurassic, the group was probably globally distributed.
Carrano, Matthew T., Sampson, S. D.
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THE DIET OF OSTRICH DINOSAURS (THEROPODA: ORNITHOMIMOSAURIA) [PDF]
Palaeontology, 2005 : The diets of ornithomimosaurian dinosaurs (Theropoda: Ornithomimosauria) have proved to be contentious owing to a dearth of unambiguous evidence in support of carnivory, omnivory or herbivory. Re-assessment of anatomical, taphonomical and palaeoecological evidence, and estimates of daily minimal energy budgets for two derived ornithomimosaurian ...
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Kinematic model of tyrannosaurid (dinosauria: theropoda) arctometatarsus function
Journal of Morphology, 2002AbstractWe present a hypothesis of tyrannosaurid foot function termed the “tensile keystone model,” in which the triangular central metatarsal and elastic ligaments dynamically strengthened the foot. The tyrannosaurid arctometatarsus, in which the central metatarsal is proximally constricted, displays osteological correlates of distal intermetatarsal ...
Eric, Snively, Anthony P, Russell
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Did oviraptorosaurs (Dinosauria; Theropoda) inhabit Argentina?
Cretaceous Research, 2007Abstract In this contribution a putative oviraptorosaurian cervical vertebra discovered in the Campanian-Maastrichtian El Brete Formation from Salta Province, NW Argentina is analysed. Based on the resemblances of this vertebra with those of the basal neoceratosaurian Elaphrosaurus and with the noasaurid Noasaurus , the Salta specimen is ...
Federico L. Agnolin +1 more
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1983
The morphology of theropod locomotion can be derived from that of pseudosuchians. The change from a facultative biped (thecodont) to an obligate theropod biped is understandable in terms of efficiency. Bipedal locomotion is more energy efficient than is a reptilian method of quad rupedal locomotion (Hotton 1980).
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The morphology of theropod locomotion can be derived from that of pseudosuchians. The change from a facultative biped (thecodont) to an obligate theropod biped is understandable in terms of efficiency. Bipedal locomotion is more energy efficient than is a reptilian method of quad rupedal locomotion (Hotton 1980).
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On the first Baryonychinae (Theropoda, Spinosauridae) teeth from South America
Zootaxa, 2023We report the first occurrence in South America of spinosaurid specimens belonging to the clade Baryonychinae. The material comprises three tooth crowns recovered from the Lower Cretaceous (Berriasian–Valanginian) of the Feliz Deserto Formation, State of Sergipe, northeast Brazil.
MAURO B.S. LACERDA +4 more
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1982
THEROPODA incertae sedis Fig. 6 Material: Teeth: UCM 39503 (UCMP-V5711) H 3.2 mm, W 1.8 mm; UCM 45063 (UCMP-V5620) H 2.8 mm, W 1.8 mm; UCMP 124986 (UCMP-V73087) H 1.6 mm, W 1.3 mm; UCMP 124987 (UCMP-V73087) H 2.8 mm, W 2.2 mm; and UCMP 124988 (UCMP-V73087) H 2.6 mm, W 2 mm.
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THEROPODA incertae sedis Fig. 6 Material: Teeth: UCM 39503 (UCMP-V5711) H 3.2 mm, W 1.8 mm; UCM 45063 (UCMP-V5620) H 2.8 mm, W 1.8 mm; UCMP 124986 (UCMP-V73087) H 1.6 mm, W 1.3 mm; UCMP 124987 (UCMP-V73087) H 2.8 mm, W 2.2 mm; and UCMP 124988 (UCMP-V73087) H 2.6 mm, W 2 mm.
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Osteohistology ofConfuciusornis sanctus(Theropoda: Aves)
Journal of Vertebrate Paleontology, 2003ABSTRACT An analysis of 80 thin-sections of the long bones of a relatively large and presumably adult specimen of Confuciusornis sanctus, a basal bird from the Early Cretaceous of China, reveals osteohistological patterns similar in some ways to those of extant birds of approximate size, but different in other ways.
A. J. De Ricqlès +4 more
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First definitive therizinosaurid (Dinosauria; Theropoda) from North America
Journal of Vertebrate Paleontology, 2001(2001). First definitive therizinosaurid (Dinosauria; Theropoda) from North America. Journal of Vertebrate Paleontology: Vol. 21, No. 3, pp. 410-414.
James I. Kirkland, Douglas G. Wolfe
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