Results 61 to 70 of about 352 (132)

Lateral tracheal and esophageal displacement in Avialae and morphological implications for theropoda (Dinosauria : Saurischia) [PDF]

, 2015
This research examines the evolution, phylogenetic distribution, and functional explanations for a peculiar and often overlooked character seen in birds, herein called tracheal and esophageal displacement.
Klingler, Jeremy Joseph
core   +2 more sources

Dromaeosaurid skeleton II [PDF]

, 1999
45 p. : ill., map ; 26 cm.Includes bibliographical references (p. 40-43).The postcranial anatomy of several new specimens of Velociraptor mongoliensis is described.
Norell, Mark., Mongolian-American Museum Paleontological Project., Makovicky, Peter J., Mongolyn Shinzhlėkh Ukhaany Akademi.   +3 more
core   +1 more source

Haplocheirus sollers. [PDF]

, 2014
44 pages : illustrations (1 color), map ; 26 cm.The basalmost alvarezsauroid Haplocheirus sollers is known from a single specimen collected in Upper Jurassic (Oxfordian) beds of the Shishugou Formation in northwestern China.
Norell, Mark., Choiniere, Jonah N., Clark, James Matthew, 1956-, Xu, Xing, 1969-   +3 more
core   +1 more source

First record of a giant bird (Ornithuromorpha) from the uppermost Maastrichtian of the Southern Pyrenees, northeast Spain

, 2021
Throughout the evolutionary history of Avialae, several members of this clade have evolved into giant forms, in different time periods and ecological contexts.
Manuel Pérez-Pueyo (10700434), Penélope Cruzado-Caballero (218522), Miguel Moreno-Azanza (276170), José Manuel Gasca (2657788), Carmen Núñez-Lahuerta (8853565), Eduardo Puértolas-Pascual (680708), José Ignacio Canudo (10700437)   +6 more
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Rhetoric vs. reality: A commentary on ''Bird Origins Anew'' by A. Feduccia

, 2015
Birds are maniraptoran theropod dinosaurs. The evidence supporting the systematic position of Avialae as a derived clade within Dinosauria is voluminous and derived from multiple independent lines of evidence. In contrast, a paucity of selectively chosen
Luis M Chiappe, Alan Turner, N Adam Smith, Mark A Norell, Scott V Edwards, Marcel Van Tuinen, Jakob Vinther, Julia A Clarke, Sterling J Nesbitt, Xing Xu, Thomas A Stidham   +10 more
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Caudipteryx as a non-avialan theropod rather than a flightless bird [PDF]

, 2005
Caudipteryx zoui is a small enigmatic theropod known from the Early Cretaceous Yixian Formation of the People's Republic of China. From the time of its initial description, this taxon has stimulated a great deal of ongoing debate regarding the ...
Dyke, Gareth J., Dyke, G J, Norell, M.A.
core   +1 more source

Decoupling body shape and mass distribution in birds and their dinosaurian ancestors. [PDF]

Nat Commun, 2023
Macaulay S, Hoehfurtner T, Cross SRR, Marek RD, Hutchinson JR, Schachner ER, Maher AE, Bates KT.   +7 more
europepmc   +1 more source

New specimens of Microraptor zhaoianus (Theropoda, Dromaeosauridae) from northeastern China. American Museum novitates ; no. 3381

, 2002
44 p. : ill., map ; 26 cm.Includes bibliographical references (p. 32-33).New specimens of the diminutive theropod dinosaur Microraptor zhaoianus are described.
Norell, Mark., Hwang, Sunny H., Ji, Qiang., Gao, Keqin, 1955-   +3 more
core  

Exceptional Preservation of Non-Mineralized Biomaterials in Fossils of the Avialae Clade

Thousands of primitive and diverse fossils birds from Mesozoic and Cenozoic have been discovered around the world. Among these, hundreds of studies have found exceptional preservation of mineralized biomaterials, allowing to expand the knowledge about the ecology and Evolution of birds.
openaire   +1 more source