Haikoucaris
Extinct genus of arthropods From Wikipedia, the free encyclopedia
Extinct genus of arthropods From Wikipedia, the free encyclopedia
Haikoucaris is a genus of megacheiran arthropod that contains the single species Haikoucaris ercaiensis. It was discovered in the Cambrian Chengjiang biota of China.[1]
| Haikoucaris Temporal range: | |
|---|---|
| |
| Reconstruction of Haikoucaris ercaiensis | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Megacheira |
| Clade: | †Cheiromorpha |
| Genus: | †Haikoucaris Chen et al., 2004 |
| Species: | †H. ercaiensis |
| Binomial name | |
| †Haikoucaris ercaiensis Chen et al., 2004 | |
Haikoucaris measured about 38 mm in body length.[1] The elongated body compose of a semicircular head shield, 13 trunk tergites and presumely a short, spine-like telson.[1][2] The head possess a pair of unstalked eyes, a pair well-developed great appendages, as well as 3 more appendage pairs of unknown detail.[2] Each of the great appendage consists of a 2-segmented peduncle and a 3-segmented claw.[2] Each of the trunk segment possess a pair of biramus appendages that each comprising a leaf-shaped exopod and a possibly 7-segmented endopod.[2]
Haikoucaris may have been a predator, with its great appendages and exopod suggested to be used for hunting and swimming respectively.[2]
Within megacheirans, Haikoucaris is generally accepted to be a member of the clade Cheiromorpha alongside Yohoia and Leanchoiliidae.[3][4][5][6]
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