Lyrarapax

Lyrarapax; Temporal range: Chengjiang Biota, Cambrian Period
Scientific classification
Kingdom:	Animalia
Clade:	Euarthropoda
Class:	†Dinocaridida
Order:	†Radiodonta
Clade:	†Amplectobeluidae
Genus:	†Lyrarapax; Cong et al., 2014[1]
Type species
	Lyrarapax unguispinus; Cong et al., 2014
Species
	L. unguispinus Cong et al., 2014[1] ; L. trilobus Cong et al., 2016 [2] ;

Lyrarapax is an anomalocaridid that lived in the early Cambrian period 520 million years ago. Its neural tissue indicates that the anomalocaridid great appendage is pre-protocerebral, resolving parts of the arthropod head problem.^[1] Its fossilized remains were found in Yunnan in southwestern China. A second species was described in 2016, differing principally in the morphology of its great appendages.^[2]

References

1 2 3 Peiyun Cong; Xiaoya Ma; Xianguang Hou; Gregory D. Edgecombe; Nicholas J. Strausfeld (2014). "Brain structure resolves the segmental affinity of anomalocaridid appendages". Nature. 513 (7519): 538–42. doi:10.1038/nature13486. PMID 25043032.
1 2 Cong, Peiyun; Daley, Allison C.; Edgecombe, Gregory D.; Hou, Xianguang; Chen, Ailin (2016). "Morphology of the radiodontan Lyrarapax from the early Cambrian Chengjiang biota". Journal of Paleontology: 1. doi:10.1017/jpa.2016.67.

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[cong2014-1] 1 2 3 Peiyun Cong; Xiaoya Ma; Xianguang Hou; Gregory D. Edgecombe; Nicholas J. Strausfeld (2014). "Brain structure resolves the segmental affinity of anomalocaridid appendages". Nature. 513 (7519): 538–42. doi:10.1038/nature13486. PMID 25043032.

[auto-2] 1 2 Cong, Peiyun; Daley, Allison C.; Edgecombe, Gregory D.; Hou, Xianguang; Chen, Ailin (2016). "Morphology of the radiodontan Lyrarapax from the early Cambrian Chengjiang biota". Journal of Paleontology: 1. doi:10.1017/jpa.2016.67.