Lyrarapax

Lyrarapax
Scientific classification
Kingdom: Animalia
Class: †Dinocaridida
Order: †Radiodonta
Clade: †Amplectobeluidae
Genus: †Lyrarapax
Cong et al 2014[1]
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]

Sample, Ian (17 July 2014). "Giant ancient prawn had tiny brain, new fossil shows". The Guardian. Retrieved 16 August 2014. 

References

  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.
  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.


This article is issued from Wikipedia - version of the 9/9/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.