An Early Cretaceous branchiopod community in northeastern China: Discovery of daphniid (Cladocera: Anmopoda) ephippia in the early assemblage of the Jehol Biota

被引：7
作者：
Liao, Huan-Yu [1 ,2 ,3 ]
Cai, Chen-Yang [3 ,4 ]
Shen, Yan-Bin [3 ]
Sun, Xiao-Yan [3 ]
Huang, Di-Ying [3 ]
机构：
[1] Yunnan Univ, Inst Palaeontol, Yunnan Key Lab Palaeobiol, MEC Int Joint Lab Palaeobiol & Palaeoenvironm,Yun, Kunming 650500, Yunnan, Peoples R China
[2] Yunnan Univ, Postdoctoral Res Stn Ecol, Kunming 650500, Yunnan, Peoples R China
[3] Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
[4] Univ Bristol, Sch Earth Sci, Life Sci Bldg,Tyndall Ave, Bristol BS8 1TQ, Avon, England
来源：
CRETACEOUS RESEARCH | 2020年 / 113卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Cladoceran; Ephippium; Branchiopod; Early Cretaceous; Jehol Biota; ANOMOPODA CRUSTACEA; EVOLUTIONARY; RADIATION;
D O I：
10.1016/j.cretres.2020.104491
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Freshwater branchiopod communities exhibit morphological and ecological stasis with the remote past. Here, we describe a new freshwater branchiopod community from the Lower Cretaceous Dabeigou Formation near Weichang County, northern Hebei Province (China), representing an early assemblage of the famous Jehol Biota. This branchiopod community consists of notostracans, conchostracans and cladocerans. Our new discovery of cladoceran ephippia in this community is described and discussed. These Ceriodaphnia-like ephippia are saddle-shaped in outline, and each ephippium has one oval egg with its long axis parallel to dorsal margin. They represent the oldest known ephippia record from China. Our discovery broadens our knowledge about reconstruction of the early assemblage and palaeoecology of the Jehol Biota. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：6
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