Results 21 to 30 of about 1,623 (162)
Scientific Reports, 2021 A new Cretaceous ootaxon (eggshell type) from the Kaiparowits Formation of Grand Staircase-Escalante National Monument is among a growing number of very small eggs described from the Mesozoic.
Sara E. Oser +5 more
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New theropod (Tetanurae: Avetheropoda) material from the ‘mid’-Cretaceous Griman Greek Formation at Lightning Ridge, New South Wales, Australia [PDF]
Royal Society Open Science, 2019 The limited fossil record of Australian Cretaceous theropods is dominated by megaraptorids, reported from associated and isolated material from the Early Cretaceous of Victoria and the ‘Mid’-Cretaceous of central-north New South Wales and central ...
Tom Brougham +2 more
doaj +1 more source
Theropod-bird link reconsidered [PDF]
Nature, 1998 Norell et al.1 describe a Velociraptor ‘wishbone’ which they interpret as a new piece of evidence for the theropod origin of birds. The bone fits a pattern of furcula-like structures that have been discovered in certain late Cretaceous theropods, including Oviraptor, Ingenia and possibly others2, some of which possess clavicles — usually not fused. But
Alan Feduccia, Larry D. Martin
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Theropod forelimb design and evolution [PDF]
Zoological Journal of the Linnean Society, 2000 Abstract We examined the relationship between forelimb design and function across the 230-million-year history of theropod evolution. Forelimb disparity was assessed by plotting the relative contributions of the three main limb elements on a ternary diagram.
KEVIN M. MIDDLETON, STEPHEN M. GATESY
openaire +2 more sources
The largest theropod track site in Yunnan, China: a footprint assemblage from the Lower Jurassic Fengjiahe Formation [PDF]
PeerJ, 2021 Yunnan Province is famous for its diversified Lufeng vertebrate faunas containing many saurischian dinosaur remains. In addition to the body fossil record, dinosaur ichnofossils have also been discovered in Yunnan, and the number of published track sites
Hongqing Li +4 more
doaj +2 more sources
REVIEW OF THE DINOSAUR RECORD FROM IRAN WITH THE DESCRIPTION OF NEW MATERIAL
Rivista Italiana di Paleontologia e Stratigrafia, 2012 The dinosaur record from Iran includes footprints from the Liassic Ab-e-Haji Formation of Neizar Valley (Kerman Province, central-eastern Iran), a single footprint from the Javaherdeh Formation near Zerab (Alborz Mounts, NE Iran), and skeletal remains ...
ALEXANDER W. A. KELLNER +4 more
doaj +1 more source
Geometric morphometric analysis of intratrackway variability: a case study on theropod and ornithopod dinosaur trackways from Münchehagen (Lower Cretaceous, Germany) [PDF]
PeerJ, 2016 A profound understanding of the influence of trackmaker anatomy, foot movements and substrate properties is crucial for any interpretation of fossil tracks.
Jens N. Lallensack +2 more
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PLoS ONE, 2014 Studying the evolution and biogeographic distribution of dinosaurs during the latest Cretaceous is critical for better understanding the end-Cretaceous extinction event that killed off all non-avian dinosaurs.
Thomas E Williamson, Stephen L Brusatte
doaj +1 more source
Shake a tail feather: the evolution of the theropod tail into a stiff aerodynamic surface.
PLoS ONE, 2013 Theropod dinosaurs show striking morphological and functional tail variation; e.g., a long, robust, basal theropod tail used for counterbalance, or a short, modern avian tail used as an aerodynamic surface.
Michael Pittman +4 more
doaj +1 more source
Unenlagiinae revisited: dromaeosaurid theropods from South América [PDF]
Anais da Academia Brasileira de Ciências, 2011 Over the past two decades, the record of South American unenlagiine dromaeosaurids was substantially increased both in quantity as well as in quality of specimens. Here is presented a summary review of the South American record for these theropods.Unenlagia comahuensis, Unenlagia paynemili, and Neuquenraptor argentinus come from the Portezuelo ...
Gianechini, Federico A. +1 more
openaire +6 more sources