Pectocaris is an extinct genus of bivalved arthropods from the Cambrian Maotianshan Shales, Yunnan Province of China.

[1][5] Since these fossils were partially preserved, they were not recognised as part of a different genus until 2004, keeping their species name, erecting Pectocaris euryptela.

Pectocaris possessed a fused bivalved carapace, covering about half of the total body length; out of which were a pair of pedunculate eyes, both antennae and part of the head.

Their body ended in a long telson, with a pair of fins forming a crescent moon shape.

[4][6] Pectocaris has been generally recovered as closely related to other bivalved arthropods such as Odaraia and Jugatacaris,[4] with some studies including it within the clade Hymenocarina.