Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods.
Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods.
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鸟类恐龙的肠道保存支持兽脚类恐龙消化道进化的保守性
DOI:
10.1038/s41598-022-24602-x
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发表时间:
2022-11-19
影响因子:
4.6
通讯作者:
Liu, Yichuan
中科院分区:
文献类型:
--
作者:
Wang, Xuri;Cau, Andrea;Guo, Bin;Ma, Feimin;Qing, Gele;Liu, Yichuan
Dromaeosaurids were bird-like dinosaurs with a predatory ecology known to forage on fish, mammals and other dinosaurs. We describe Daurlong wangi gen. et sp. nov., a dromaeosaurid from the Lower Cretaceous Jehol Biota of Inner Mongolia, China. Exceptional preservation in this specimen includes a large bluish layer in the abdomen which represents one of the few occurrences of intestinal remnants among non-avian dinosaurs. Phylogenetically, Daurlong nests among a lineage of short-armed Jehol Biota species closer to eudromaeosaurs than microraptorines. The topographic correspondence between the exceptionally preserved intestine in the more stem-ward Scipionyx and the remnants in the more birdlike Daurlong provides a phylogenetic framework for inferring intestine tract extent in other theropods lacking fossilized visceral tissues. Gastrointestinal organization results conservative among faunivorous dinosaurs, with the evolution of a bird-like alimentary canal restricted to avialan theropods.
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影响因子:
1.4
作者:
Naish, Darren;Martill, David M.;Frey, Eberhard
通讯作者:
Frey, Eberhard
影响因子:
3.6
作者:
Goloboff, Pablo A.;Catalano, Santiago A.
通讯作者:
Catalano, Santiago A.
影响因子:
6.5
作者:
Lewis, PO
通讯作者:
Lewis, PO
影响因子:
16.6
作者:
Han, Gang;Chiappe, Luis M.;Han, Lizhuo
通讯作者:
Han, Lizhuo
DOI:
10.1002/ar.24241
发表时间:
2019-09-09
影响因子:
2
作者:
Currie, Philip J.;Evans, David C.
通讯作者:
Evans, David C.