Results 21 to 30 of about 216 (103)
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
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 +5 more
wiley +1 more source
Biological Reviews, Volume 96, Issue 5, Page 2058-2112, October 2021., 2021 ABSTRACT Birds are some of the most diverse organisms on Earth, with species inhabiting a wide variety of niches across every major biome. As such, birds are vital to our understanding of modern ecosystems. Unfortunately, our understanding of the evolutionary history of modern ecosystems is hampered by knowledge gaps in the origin of modern bird ...
Case Vincent Miller, Michael Pittman
wiley +1 more source
Insights into the early evolution of modern avian physiology from fossilized soft tissues from the Mesozoic [PDF]
Philosophical Transactions of the Royal Society B: Biological SciencesJingmai O'Connor
exaly +2 more sources
Unenlagiid theropods: are they members of the Dromaeosauridae (Theropoda, Maniraptora)?
Anais da Academia Brasileira de Ciências, 2011 In the present paper we analyze the phylogenetic position of the derived Gondwanan theropod clade Unenlagiidae. Although this group has been frequently considered as deeply nested within Deinonychosauria and Dromaeosauridae, most of the features ...
Federico L. Agnolin, Fernando E. Novas
doaj +1 more source
Biological Reviews, Volume 96, Issue 5, Page 2229-2257, October 2021., 2021 ABSTRACT The morphology of the temporal region in the tetrapod skull traditionally has been a widely discussed feature of vertebrate anatomy. The evolution of different temporal openings in Amniota (mammals, birds, and reptiles), Lissamphibia (frogs, salamanders, and caecilians), and several extinct tetrapod groups has sparked debates on the ...
Pascal Abel, Ingmar Werneburg
wiley +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
A new small deinonychosaur (Dinosauria: Theropoda) from the Late Cretaceous of Patagônia, Argentina
Anais da Academia Brasileira de Ciências, 2011 Here we report on a new small deinonychosaurian theropod, Pamparaptor micros gen. et sp. nov., from the Late Cretaceous of Patagônia, Argentina. Pamparaptor micros exhibits a pedal structure previously unknown among South Américan deinonychosaurians. The
Juan D. Porfiri +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
From Highways to Biological Collections: Plastination of Wild Animals Victims of Roadkill in the Sooretama Biological Reserve, Brazil [PDF]
Brazilian Archives of Biology and TechnologyRoadkill is one of the most direct impacts on fauna, leading to numerous direct and indirect impacts. Road-killed animals could serve as a resource for research and teaching purposes, but first, they need to have their tissues preserved by some technique.
Marcos Vinícius Freitas Silva +8 more
doaj +1 more source