Results 21 to 30 of about 289 (155)

Relative skull size evolution in Mesozoic archosauromorphs: potential drivers and morphological uniqueness of erythrosuchid archosauriforms

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, Pedro L. Godoy, Susannah C. R. Maidment, Martín D. Ezcurra, Mia Wroe, Thomas J. Raven, Joseph A. Bonsor, Richard J. Butler, Kenneth Angielczyk   +8 more
wiley   +1 more source

(Theropoda, Paraves, Unenlagiidae) from the Late Cretaceous of Patagonia

, 2021
Unenlagia comahuensis was originally described as a phylogenetic link between nonavian dinosaurs and birds. Later it was interpreted by some authors as belonging to the deinonychosaurian clade Dromaeosauridae, and more recently as phylogenetically closer
Matias J. Motta, Federico Brissón Egli, Fernando E. Novas, Federico L. Agnolín   +3 more
core   +2 more sources

Upper Cretaceous European theropod palaeobiodiversity, palaeobiogeography and the intra‐Maastrichtian faunal turnover: new contributions from the Iberian fossil site of Laño

Papers in Palaeontology, Volume 8, Issue 1, January/February 2022., 2022
Abstract A total of 227 theropod teeth have so far been recovered from the upper Campanian Laño site (northern Iberian Peninsula). The teeth were studied for their qualitative and quantitative features. From the theropod sample found at Laño, seven morphotypes attributed to five taxa are identified: a medium to large abelisaurid (Arcovenator sp.) and ...
Erik Isasmendi, Angelica Torices, José Ignacio Canudo, Philip J. Currie, Xabier Pereda‐Suberbiola, David Button   +5 more
wiley   +1 more source

Using creation science to demonstrate evolution 2: morphological continuity within Dinosauria [PDF]

, 2011
Creationist literature claims that sufficient gaps in morphological continuity exist to classify dinosaurs into several distinct baramins (‘created kinds’).
Senter, Philip J
core   +3 more sources

Paravian Phylogeny and the Dinosaur-Bird Transition: An Overview

Frontiers in Earth Science, 2019
Recent years witnessed the discovery of a great diversity of early birds as well as closely related non-avian theropods, which modified previous conceptions about the origin of birds and their flight. We here present a review of the taxonomic composition
Federico L. Agnolin, Federico L. Agnolin, Federico L. Agnolin, Matias J. Motta, Matias J. Motta, Federico Brissón Egli, Federico Brissón Egli, Gastón Lo Coco, Gastón Lo Coco, Fernando E. Novas, Fernando E. Novas   +10 more
doaj   +1 more source

Cranial anatomy of Anchiornis huxleyi (Theropoda: Paraves) sheds new light on bird skull evolution [PDF]

古脊椎动物学报 (中英文版)
The origin of birds from theropod dinosaurs, by any measures, is the most eye-catching evolutionary transition in the history of life, which encompasses numerous extensive morphological and biological changes. Compared to postcranium, little progress has
WANG Min, WANG Xiao-Li, ZHENG Xiao-Ting, ZHOU Zhong-He
doaj   +1 more source

Mosaic evolution in an asymmetrically feathered troodontid dinosaur with transitional features [PDF]

, 2017
Asymmetrical feathers have been associated with flight capability but are also found in species that do not fly, and their appearance was a major event in feather evolution.
Currie, PJ, Congyu Yu, Yu, CY, Meng, Qingjin, Junchang Lü, Philip Currie, Dongyu Hu, Hu, DY, Pittman, Michael, Lida Xing, Hu, Dongyu, Michael Pittman, Xu, X, Currie, Philip, Qingjin Meng, Lu, Junchang, Xing, Lida, Currie, P, Xu, Xing, Meng, QJ, Xing, LD, Pittman, MD, Xing Xu, Lü, JC, Yu, Congyu   +24 more
core   +1 more source

Dromaeosaurid systematics and evolution. [PDF]

, 2012
206 p. : ill. (some col.), maps ; 26 cm.Coelurosauria is the most diverse clade of theropod dinosaurs. Much of this diversity is present in Paraves--the clade of dinosaurs containing dromaeosaurids, troodontids, and avialans. Paraves has over 160 million
Norell, Mark., Turner, Alan H. (Alan Hamilton), Makovicky, Peter J.   +2 more
core   +1 more source

Skeletal completeness of the non‐avian theropod dinosaur fossil record

Palaeontology, Volume 62, Issue 6, Page 951-981, November 2019., 2019
Abstract Non‐avian theropods were a highly successful clade of bipedal, predominantly carnivorous, dinosaurs. Their diversity and macroevolutionary patterns have been the subject of many studies. Changes in fossil specimen completeness through time and space can bias our understanding of macroevolution.
Daniel D. Cashmore, Richard J. Butler, Roger Benson   +2 more
wiley   +1 more source

The impact of poor sampling of polymorphism on cladistic analysis

Cladistics, Volume 32, Issue 3, Page 317-334, June 2016., 2016
Abstract Despite its ubiquity in the natural world, polymorphism is commonly disregarded or poorly sampled in phylogenetic analyses due to deliberate sampling strategy, inadequate sampling effort and limited specimen availability. Poor sampling of intraspecific variation engenders differential sampling of morphs within polymorphic species, which could ...
Akinobu Watanabe
wiley   +1 more source