Xiazhuangocaris

Xiazhuangocaris
Temporal range: Cambrian Stage 3
Restoration
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Order: Hymenocarina
Genus: Xiazhuangocaris
Zeng et al. 2020
Type species
Xiazhuangocaris chenggongensis
Zeng et al. 2020

Xiazhuangocaris is an extinct genus of bivalved arthropod known from the Cambrian aged Chengjiang Biota of Yunnan, China. Only a single specimen (NIGP 172765) is known, around 5.3 centimetres (2.1 in) long, which only preserves the anatomy of the carapace and the trunk. The bivalved carpace has a pronounced pair of notches at its front, as well as a posterior notch at its rear. The body had at least 13 tergite-pleurite rings, which terminate in a pair of rounded caudal rami, which are fringed with setae. The describing authors interpreted the taxon as a member of Hymenocarina, which contains other Cambrian bivalved arthropods.[1]

References

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  1. ^ Zeng, Han; Zhao, Fang-Chen; Yin, Zong-Jun; Zhu, Mao-Yan (September 2021). "A new early Cambrian bivalved euarthropod from Yunnan, China and general interspecific morphological and size variations in Cambrian hymenocarines". Palaeoworld. 30 (3): 387–397. doi:10.1016/j.palwor.2020.09.002.