douvillei Arthropod Fossils
Chengjiang Death Assemblage
Time: Early Cambrian (~525 million years ago)
mm long on a 32 mm by 28 mm matrix
Site: Chengjiang Maotianshan Shale, Quiongzhusi Section, Yu’anshan
Member, Heilinpu Formation, Anning, Yunnan Province, China
This plaque contains a half dozen examples of
a tiny bivalved arthropod known as Kunnmingella. The conjoined valves
are often preserved in “butterfly” fashion as are these.
Some 240 members of this unique Bradoriid have been described. They
are yet another example of the diverse life forms that make up what
is known as the Chengjiang Biota.