Chengjiangocaris longiformis, Rare Arthropod from Chengjiang

Chengjiangocaris longiformis

Phylum Arthropoda

Geological Time: Early Cambrian (~525 million years ago)

Size (25.4mm=1 inch): 30 mm long on a 40 mm by 35 mm matrix

Fossil Site: Chengjiang Maotianshan Shales, Quiongzhusi Section, Yu’anshan Member, Heilinpu Formation, Anning, Yunnan Province, China

Chengjiangocaris longiformisThis unusual specimen is Chengjiangocaris, a taxon known from only a handful of specimens. It is the only genus and species in the Family Chegjiangocaridae, and is known only form the Chengjiang Biota. While most are preserved laterally, this is a much less common dorsal example. I have included an artist’s rendering of the specimen as it is thought to have appeared in life.

click to enlarge


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