Clypecaris is genus of bivalved Cambrian arthropod known from the Chengjiang biota of Yunnan, China. The genus was initially described for the type species C. pteroidea by Hou, 1999.[1] A second species C. serrata was described by Yang et al. in 2016. The species are primarily distinguished by the presence of a serrated edge on the front of the carapace of C. serrata. C. serrata is noted for the modification of an anterior pair of limbs into spined grasping appendages, indicating a predatory lifestyle. It is unknown whether a similar structure was present in C. pteroidea.[2] Clypecaris is considered to likely be a member or a close relative of Hymenocarina, and is closely related to Perspicaris.[3][4] As well as to Ercaicunia.[5]
| Clypecaris Temporal range:
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|---|---|
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| Fossil of C. pteroidea | |
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| Fossil of C. serrata | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Order: | †Hymenocarina |
| Genus: | †Clypecaris Hou, 1999 |
| Species | |
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See also edit
References edit
- ^ Hou, X.-G. New rare bivalved arthropods from the Lower Cambrian Chengjiang fauna, Yunnan, China. J. Paleontol. 73, 102–116 (1999)
- ^ Yang, Jie; Ortega-Hernández, Javier; Lan, Tian; Hou, Jin-bo; Zhang, Xi-guang (2016-06-10). "A predatory bivalved euarthropod from the Cambrian (Stage 3) Xiaoshiba Lagerstätte, South China". Scientific Reports. 6 (1): 27709. Bibcode:2016NatSR...627709Y. doi:10.1038/srep27709. ISSN 2045-2322. PMC 4901283. PMID 27283406.
- ^ Izquierdo‐López, Alejandro; Caron, Jean‐Bernard (November 2021). Zhang, Xi‐Guang (ed.). "A Burgess Shale mandibulate arthropod with a pygidium: a case of convergent evolution". Papers in Palaeontology. 7 (4): 1877–1894. doi:10.1002/spp2.1366. ISSN 2056-2799. S2CID 236284813.
- ^ Izquierdo-López, Alejandro; Caron, Jean-Bernard (2019). "A possible case of inverted lifestyle in a new bivalved arthropod from the Burgess Shale". Royal Society Open Science. 6 (11): 191350. Bibcode:2019RSOS....691350I. doi:10.1098/rsos.191350. PMC 6894550. PMID 31827867.
- ^ Zhai, Dayou; Ortega-Hernández, Javier; Wolfe, Joanna M.; Hou, Xianguang; Cao, Chunjie; Liu, Yu (January 2019). "Three-Dimensionally Preserved Appendages in an Early Cambrian Stem-Group Pancrustacean". Current Biology. 29 (1): 171–177.e1. doi:10.1016/j.cub.2018.11.060. PMID 30595518.
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