Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Alan Feduccia"'
Autor:
Alan Feduccia
Publikováno v:
Diversity, Vol 16, Iss 1, p 20 (2023)
The idea that birds are maniraptoran theropod dinosaurs is now considered an evolutionary consensus. An “open” (i.e., completely or substantially perforate) acetabulum is considered an important synapomorphy verifying the bird–dinosaur nexus. H
Externí odkaz:
https://doaj.org/article/27ad90595cdb42379fa458a15af0f75c
Publikováno v:
PLoS ONE, Vol 7, Iss 11, p e48842 (2012)
BackgroundOld World vultures are likely polyphyletic, representing two subfamilies, the Aegypiinae and Gypaetinae, and some genera of the latter may be of independent origin. Evidence concerning the origin, as well as the timing of the divergence of
Externí odkaz:
https://doaj.org/article/114fa5594e354f0da570606fba8183c6
Autor:
Alan Feduccia
Examining and interpreting recent spectacular fossil discoveries in China, paleontologists have arrived at a prevailing view: there is now incontrovertible evidence that birds represent the last living dinosaur. But is this conclusion beyond dispute?
Autor:
Alan, Feduccia
Publikováno v:
Science (New York, N.Y.). 374(6566)
Recent genomic advances have transformed our understanding of birds.
Autor:
Alan Feduccia, Ph.D
Birds and dinosaurs have dominated human interest for decades. In this well-supported revolutionary view of the field, critical questions are explored with credible evidence and biological thought. Are birds derived directly from advanced dinosaurs,
Autor:
Alan Feduccia
Publikováno v:
The Open Ornithology Journal. 9:14-38
Adherents of the current orthodoxy of a derivation of birds from theropod dinosaurs, criticize the commentary by Feduccia (2013, Auk, 130) [1 - 12] entitled “Bird Origins Anew” as well as numerous papers by Lingham-Soliar on theropod dermal fiber
Autor:
Alan Feduccia, Stephen A. Czerkas
Publikováno v:
Journal of Ornithology. 156:1067-1074
Considerable debate surrounds the numerous avian-like traits in core maniraptorans (oviraptorosaurs, troodontids, and dromaeosaurs), especially in the Chinese Early Cretaceous oviraptorosaur Caudipteryx, which preserves modern avian pennaceous primar
Autor:
Stephen A. Czerkas, Alan Feduccia
Publikováno v:
Journal of Ornithology. 155:841-851
Re-examination utilizing Keyence 3D digital microscopy and low angled illumination of the fossil Scansoriopteryx, a problematic sparrow-size pre-Archaeopteryx specimen from the Jurassic Daohugou Biotas, provides new evidence which challenges the wide
Autor:
Alan Feduccia
Publikováno v:
Cretaceous Research. 50:1-15
Debate on the magnitude of Cretaceous extinctions and timing of modern bird origins has sharply coalesced over the past two decades into contested models, gradualistic or explosive. Molecular clocks, bolstered by phylogenetic, biogeographic, and vica