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Fusion or hypertrophy?: the unusual arms of the Petalocrinidae (Ordovician-Devonian: Crinoidea)
Ausich, William, I1; Mao, Yingyan (毛颖颜)2; Li, Yue (李越)2
2019-09-01
发表期刊JOURNAL OF PALEONTOLOGY
ISSN0022-3360
卷号93期号:5页码:966-970
摘要

Using polarized light microscopy, the large, triangular or cylindrical second brachial plate of the Petalocrinidae is demonstrated to be a compound brachial formed through fusion of brachial plates along the distal margin of the growing arms. Based on the number of ambulacral bifurcations, brachials from the primibrachitaxis through at least the quintibrachitaxis may have been fused to form this large plate. In Petalocrinus, fused brachials form a second brachial that assumed the same crystallographic orientation, but in Spirocrinus, multidirectional extinctions preserve some of the original multiplate arrangement.

DOI10.1017/jpa.2019.25
语种英语
关键词[WOS]BASAL PLATES ; ORGANIC-MOLECULES ; CRYSTALLOGRAPHY ; ECHINODERMATA ; EVOLUTION ; BIOMINERALIZATION ; PHYLOGENY ; CAMERATA ; CALCITE ; MODE
资助项目State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[20192105] ; Strategic Priority Research Program of Chinese Academy of Sciences Grant[XDB26000000]
WOS研究方向Paleontology
WOS类目Paleontology
WOS记录号WOS:000478797400009
项目资助者State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; Strategic Priority Research Program of Chinese Academy of Sciences Grant
出版者CAMBRIDGE UNIV PRESS
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/27954
专题中国科学院南京地质古生物研究所
通讯作者Mao, Yingyan (毛颖颜)
作者单位1.Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
通讯作者单位中国科学院南京地质古生物研究所
推荐引用方式
GB/T 7714
Ausich, William, I,Mao, Yingyan ,Li, Yue . Fusion or hypertrophy?: the unusual arms of the Petalocrinidae (Ordovician-Devonian: Crinoidea)[J]. JOURNAL OF PALEONTOLOGY,2019,93(5):966-970.
APA Ausich, William, I,Mao, Yingyan ,&Li, Yue .(2019).Fusion or hypertrophy?: the unusual arms of the Petalocrinidae (Ordovician-Devonian: Crinoidea).JOURNAL OF PALEONTOLOGY,93(5),966-970.
MLA Ausich, William, I,et al."Fusion or hypertrophy?: the unusual arms of the Petalocrinidae (Ordovician-Devonian: Crinoidea)".JOURNAL OF PALEONTOLOGY 93.5(2019):966-970.
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