An orthonauplius of 'Orsten'-type preservation from the Upper Cambrian (Furongian) of South China

A tiny larva of. 'Orsten'-type of three-dimensional preservation has been recovered from the Upper Cambrian Bitiao Formation of Wangcun section, western Hunan, South China, herein interpreted as an orthonauplius stage of a crown-group crustacean. The specimen comprises an ovoid body with a...

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Bibliographic Details
Published in:Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen
Main Authors: Zhang, Huaqiao, Dong, Xi-ping, Waloszek, Dieter, Maas, Andreas
Format: Report
Language:English
Published: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG 2016
Subjects:
Orthonauplius
type-A larvae
'Orsten'-type preservation
Furongian
western Hunan
South China
N-SP
CRUSTACEA
MIDDLE
PHOSPHATOCOPINA
ORDOVICIAN
ARTHROPOD
SWEDEN
NEWFOUNDLAND
PHYLOGENY
Paleontology
Newfoundland
Online Access:http://ir.nigpas.ac.cn/handle/332004/21520
https://doi.org/10.1127/njgpa/2016/0550
Description
Summary:A tiny larva of. 'Orsten'-type of three-dimensional preservation has been recovered from the Upper Cambrian Bitiao Formation of Wangcun section, western Hunan, South China, herein interpreted as an orthonauplius stage of a crown-group crustacean. The specimen comprises an ovoid body with a prominent labrum and three pairs of appendages. In all it exhibits comparable morphological similarities with the type-A larvae described earlier from other. 'Orsten'-type deposits. The new orthonauplius can be considered to represent a new form of type-A larvae. Such larvae represent a morpho-type and were previously reported from the Cambrian palaeo-microcontinents Laurentia, Baltica, and Australia; their find now also from South China implies a pandemic distribution. With this, type-A larvae have the widest and longest-lasting record of all Cambrian crustaceans, possibly even euarthropod fossils described so far.

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