Clypecaris Explained

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]

See also

• Arthropod
• Cambrian explosion
• Chengjiang biota
  • List of Chengjiang Biota species by phylum

Notes and References

1. Hou, X.-G. New rare bivalved arthropods from the Lower Cambrian Chengjiang fauna, Yunnan, China. J. Paleontol. 73, 102–116 (1999)
2. 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. 10.1038/srep27709. 27283406. 4901283. 2016NatSR...627709Y . 2045-2322. free.
3. Izquierdo‐López . Alejandro . Caron . Jean‐Bernard . November 2021 . Zhang . Xi‐Guang . A Burgess Shale mandibulate arthropod with a pygidium: a case of convergent evolution . Papers in Palaeontology . en . 7 . 4 . 1877–1894 . 10.1002/spp2.1366 . 236284813 . 2056-2799.
4. Izquierdo-López . Alejandro . Caron . Jean-Bernard . A possible case of inverted lifestyle in a new bivalved arthropod from the Burgess Shale . Royal Society Open Science . 2019 . 6 . 11 . 191350 . 10.1098/rsos.191350 . 6894550 . 31827867. 2019RSOS....691350I .
5. 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 . en . 29 . 1 . 171–177.e1 . 10.1016/j.cub.2018.11.060 . 30595518 . free.