Perspicaris

Perspicaris
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Genus:	Perspicaris; Briggs 1977
Species
	P. recondita Briggs 1977; P. dictynna (type species, =Canadaspis dictynna Simonetta & Delle Cave 1975);

Perspicaris is a fossil arthropod from the Cambrian period. It was 2–3 centimetres (0.8–1.2 in) long and bivalved. The valves, encasing the thorax, were joined together by a dorsal hinge.

It is difficult to establish the lifestyle of Perspicaris. Its large eyes and other parts would suggest a swimming animal, yet it lacks claws, which seems to suggest a bottom feeder.^[2]

Two species of Perspicaris are found in the famous Burgess Shale in British Columbia, Canada. 202 specimens of Perspicaris are known from the Greater Phyllopod bed, where they comprise 0.38% of the community.^[3]

Perspicaris has been identified as an arthropod that is a member of a clade close to the crown-group of Euarthropoda, which includes myriapods, chelicerates, insects and crustaceans.^[4]

References[]

^ Briggs, D.E.G. (1977). "Archived copy" (PDF). Palaeontology. Archived from the original (PDF) on 2011-08-24. Retrieved 2010-05-11.{{cite journal}}: CS1 maint: archived copy as title (link)
^ "National Museum of Natural History - Burgess Shale". Jul 14, 2001. Archived from the original on 2001-07-14. Retrieved Dec 15, 2020.
^ Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022.
^ Budd, G. (2002). "A palaeontological solution to the arthropod head problem". Nature. 417 (6886): 271–275. Bibcode:2002Natur.417..271B. doi:10.1038/417271a. PMID 12015599. S2CID 4310080.

External links[]

"Perspicaris dictynna". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011.

This prehistoric arthropod-related article is a stub. You can help Wikipedia by .

[1] Briggs, D.E.G. (1977). "Archived copy" (PDF). Palaeontology. Archived from the original (PDF) on 2011-08-24. Retrieved 2010-05-11.{{cite journal}}: CS1 maint: archived copy as title (link)

[2] "National Museum of Natural History - Burgess Shale". Jul 14, 2001. Archived from the original on 2001-07-14. Retrieved Dec 15, 2020.

[Caron2006-3] Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022.

[4] Budd, G. (2002). "A palaeontological solution to the arthropod head problem". Nature. 417 (6886): 271–275. Bibcode:2002Natur.417..271B. doi:10.1038/417271a. PMID 12015599. S2CID 4310080.

[1]

[2]

[3]

[4]