Results 21 to 30 of about 301 (127)
The Anatomical Record, 2019 ABSTRACTThe fossil record of caenagnathid oviraptorosaurs consists mainly of their fused, complexly sculptured dentaries, but little is known about the growth and development of this diagnostic structure. Previous work has suggested that the ridges and grooves on the occlusal surface are either the vestiges of teeth and their alveoli or were ...
Gregory F. Funston +5 more
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New information on the cranial morphology of Avimimus (Theropoda: Oviraptorosauria)
Journal of Vertebrate Paleontology, 2017 ABSTRACTThe cranial morphology of the oviraptorosaurian Avimimus portentosus is described based on a new specimen, one that includes bones such as the nasal and the jugal, which had not been available or only incompletely preserved previously. The left and right nasals are fused together as in oviraptorids.
Takanobu Tsuihiji +6 more
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Vertebrate Anatomy, Morphology, Palaeontology, 2020 Our understanding of caenagnathid anatomy, diversity, and ecology has improved considerably in the past twenty years, but numerous issues still remain. Among these, the diversity and taxonomy of caenagnathids from the Dinosaur Park Formation of Alberta,
Gregory Funston
doaj +3 more sources
New specimens of the crested theropod dinosaur Elmisaurus rarus from Mongolia [PDF]
Acta Palaeontologica Polonica, 2016 New specimens of Elmisaurus rarus from the Upper Cretaceous of Mongolia (Nemegt Formation) preserve bones not previously found in “elmisaurids” that help elucidate their relationships to Leptorhynchos elegans and other oviraptorosaurs.
Philip J. Currie +2 more
doaj +1 more source
Constraining the body mass range of Anzu wyliei using volumetric and extant-scaling methods
Vertebrate Anatomy, Morphology, Palaeontology, 2021 The ability to accurately and reliably estimate body mass of extinct taxa is a vital tool for interpreting the physiology and even behavior of long-dead animals. For this reason, paleontologists have developed many possible methods of estimating the body
Kyle Atkins-Weltman +2 more
doaj +1 more source
Osteology of Khaan mckennai (Oviraptorosauria: Theropoda) [PDF]
Bulletin of the American Museum of Natural History, 2012 ABSTRACT The monophyly of Oviraptoridae, a group of theropod dinosaurs, which share a uniquely bizarre morphology, has never been called into question due in large part to their unusual complex of characters. Despite a vivid recent history of discovery and broad public appeal the nature of their morphological diversity has not been explored extensively.
Balanoff, Amy M., Norell, Mark A.
openaire +1 more source
Papers in Palaeontology, Volume 9, Issue 2, March/April 2023., 2023 Abstract Current research suggests that the initial radiation of maniraptoran theropods occurred in the Middle Jurassic, although their fossil record is known almost exclusively from the Cretaceous. However, fossils of Jurassic maniraptorans are scarce, usually consisting solely of isolated teeth, and their identifications are often disputed.
Simon Wills +3 more
wiley +1 more source
Palaeontology, Volume 65, Issue 3, May/June 2022., 2022 Abstract Little is known about the large‐scale evolutionary patterns of skull size relative to body size, and the possible drivers behind these patterns, in Archosauromorpha. For example, the large skulls of erythrosuchids, a group of non‐archosaurian archosauromorphs from the Early and Middle Triassic, and of theropod dinosaurs are regarded as ...
Jordan Bestwick +8 more
wiley +1 more source
New elmisaurine specimens from North America and their relationship to the Mongolian Elmisaurus rarus [PDF]
Acta Palaeontologica Polonica, 2016 New specimens from Canada confirm the presence of elmisaurines in North America and shed light on the relationship of Leptorhynchos elegans to Mongolian forms.
Gregory F. Funston +2 more
doaj +1 more source
Morphological disparity in theropod jaws: comparing discrete characters and geometric morphometrics
Palaeontology, Volume 63, Issue 2, Page 283-299, March 2020., 2020 Abstract Disparity, the diversity of form and function of organisms, can be assessed from cladistic or phenetic characters, and from discrete characters or continuous characters such as landmarks, outlines, or ratios. But do these different methods of assessing disparity provide comparable results?
Joep Schaeffer +4 more
wiley +1 more source