Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Jingmai K. O'Connor"'
Autor:
Mark A. Loewen, Joseph J. W. Sertich, Scott Sampson, Jingmai K. O’Connor, Savhannah Carpenter, Brock Sisson, Anna Øhlenschlæger, Andrew A. Farke, Peter J. Makovicky, Nick Longrich, David C. Evans
Publikováno v:
PeerJ, Vol 12, p e17224 (2024)
The Late Cretaceous of western North America supported diverse dinosaur assemblages, though understanding patterns of dinosaur diversity, evolution, and extinction has been historically limited by unequal geographic and temporal sampling. In particul
Externí odkaz:
https://doaj.org/article/63f26b26c36a4c208f4182ca7db27f6e
Publikováno v:
PeerJ, Vol 12, p e16960 (2024)
Important transformations of the pectoral girdle are related to the appearance of flight capabilities in the Dinosauria. Previous studies on this topic focused mainly on paravians yet recent data suggests flight evolved in dinosaurs several times, in
Externí odkaz:
https://doaj.org/article/cbf6e310563a4e8bb720fa652aadda2e
Publikováno v:
PeerJ, Vol 11, p e15139 (2023)
The Longipterygidae are a unique clade among the enantiornithines in that they exhibit elongate rostra (≥60% total skull length) with dentition restricted to the distal tip of the rostrum, and pedal morphologies suited for an arboreal lifestyle (as
Externí odkaz:
https://doaj.org/article/3779853c02dd43099384dc0b69c9c45b
Publikováno v:
Communications Biology, Vol 4, Iss 1, Pp 1-3 (2021)
Externí odkaz:
https://doaj.org/article/7799f63fc83047e5ada294c63770f16b
Publikováno v:
Frontiers in Ecology and Evolution, Vol 9 (2021)
Recently, ∼100 Ma amber from Myanmar has become an important source of information regarding the morphology of Late Cretaceous enantiornithines. Two specimens consisting of partial hindlimbs exhibit unusual morphologies when compared to both extant
Externí odkaz:
https://doaj.org/article/925d45b6de2c41f3873ec4c0ae39d360
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
Most crown-birds experience rapid growth, reaching adult size within a year. Rapid growth strategies evolved within Aves multiple times during the Cretaceous, documented in the Confuciusornithiformes and the Ornithuromorpha. In contrast, osteohistolo
Externí odkaz:
https://doaj.org/article/f40bbc6d47c94655a50c72fe8f2bc5f1
Publikováno v:
Frontiers in Earth Science, Vol 8 (2020)
Recent discoveries of enantiornithine birds trapped in amber have decreased the lower size limit of members of this clade, increased their morphological diversity, and provided significant new data regarding their plumage. Here, we describe a new spe
Externí odkaz:
https://doaj.org/article/626306a1bd9640a380f989516631bfef
Autor:
Lida Xing, Ryan C. McKellar, Min Wang, Ming Bai, Jingmai K. O’Connor, Michael J. Benton, Jianping Zhang, Yan Wang, Kuowei Tseng, Martin G. Lockley, Gang Li, Weiwei Zhang, Xing Xu
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
The plumage of Cretaceous birds has previously been described only from compression fossils and isolated feathers in amber. Here, Xing et al.describe two 99 million year old bird wings found preserved in amber, enabling new insight into the evolution
Externí odkaz:
https://doaj.org/article/a75a051d7bf64cf58873c374a978812f
Publikováno v:
PeerJ, Vol 6, p e5910 (2018)
The most complete known North American enantiornithine was collected in 1992 but never formally described. The so-called “Kaiparowits avisaurid” remains one of the most exceptional Late Cretaceous enantiornithine fossils. We recognize this specim
Externí odkaz:
https://doaj.org/article/320ebef4fa6d4dc685532973ea423076
Publikováno v:
Geosciences, Vol 2, Iss 3, Pp 157-177 (2012)
At least two lineages of Mesozoic birds are known to have possessed a distinct feather morphotype for which there is no neornithine (modern) equivalent. The early stepwise evolution of apparently modern feathers occurred within Maniraptora, basal to
Externí odkaz:
https://doaj.org/article/98e7c7692a624b7a9b04fa64560a1f86