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Microraptor with Ingested Lizard Suggests Non-specialized Digestive Function

文献类型：期刊论文

作者O'Connor, Jingmai1,2; Zheng, Xiaoting3,4; Dong, Liping1,2; Wang, Xiaoli3,4,5; Wang, Yan3,4; Zhang, Xiaomei4; Zhou, Zhonghe1,2
刊名CURRENT BIOLOGY
出版日期2019-07-22
卷号29期号:14页码:2423-+
ISSN号0960-9822
DOI10.1016/j.cub.2019.06.020
英文摘要Direct indicators of diet and predator-prey relationships are exceedingly rare in the fossil record [1, 2]. However, it is through such traces that we can best understand trophic interactions in ancient ecosystems [3], confirm dietary inferences derived from skeletal morphologies [4], and clarify behavioral and ecological interpretations [5]. Here, we identify a previously unrecognized lizard species in the abdomen of a specimen of Microraptor zhaoianus, a small, volant dromaeosaurid (Paraves) with asymmetrical flight feathers on both its forelimbs and hindlimbs from the Early Cretaceous Jehol Biota [6-8]. The lizard is largely complete and articulated, confirming the current perception of Microraptor as an agile opportunistic predator that, like extant reptiles, including raptorial birds, ingested small prey whole and head first [9]. The lizard can be readily distinguished from previously recognized Early Cretaceous species based on its unusual widely spaced and brachydont dentition. Phylogenetic analysis suggests Indrasaurus wangi gen. et sp. nov. is a basal scleroglossan closely related to the slightly older Liushusaurus [10]. Comparison of ingested remains preserved across Paraves suggests that dromaeosaurids retained the plesiomorphic condition in which ingested prey were fully digested, rather than egested, as has been demonstrated was the case in the probable troodontid Anchiornis [11]. This supports a closer relationship between Ayes and Anchiornis [12, 13] and suggests that flight did not precipitate the evolution of pellet egestion in Paraves and that the evolution of the "modern avian" digestive system in paravians was highly homoplastic [14]. A preliminary Jehol food web is reconstructed from current data.
WOS关键词EARLY CRETACEOUS LIZARD ; EARLY EVOLUTION ; LAS-HOYAS ; THEROPOD ; SQUAMATA ; YABEINOSAURUS ; DINOSAURS ; REPTILIA ; CHINA
资助项目National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41372014] ; National Natural Science Foundation of China[41472023] ; National Natural Science Foundation of China[41402017] ; Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB 26000000] ; Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB 18000000]
WOS研究方向Biochemistry & Molecular Biology ; Cell Biology
语种英语
出版者CELL PRESS
WOS记录号WOS:000476703900035
源URL[http://119.78.100.205/handle/311034/9967]  
专题古脊椎动物与古人类研究所_图书馆1
通讯作者O'Connor, Jingmai; Wang, Xiaoli
作者单位1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 10010, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 10010, Peoples R China
3.Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Shandong, Peoples R China
4.Shandong Tianyu Museum Nat, Pingyi 273300, Shandong, Peoples R China
5.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 O'Connor, Jingmai,Zheng, Xiaoting,Dong, Liping,et al. Microraptor with Ingested Lizard Suggests Non-specialized Digestive Function[J]. CURRENT BIOLOGY,2019,29(14):2423-+.
APA O'Connor, Jingmai.,Zheng, Xiaoting.,Dong, Liping.,Wang, Xiaoli.,Wang, Yan.,...&Zhou, Zhonghe.(2019).Microraptor with Ingested Lizard Suggests Non-specialized Digestive Function.CURRENT BIOLOGY,29(14),2423-+.
MLA O'Connor, Jingmai,et al."Microraptor with Ingested Lizard Suggests Non-specialized Digestive Function".CURRENT BIOLOGY 29.14(2019):2423-+.

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来源：古脊椎动物与古人类研究所

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