Protocaris

Protocaris; Temporal range: Cambrian Series 2 PreꞒ Ꞓ O S D C P T J K Pg N
	P. marshi
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	incertae sedis
Order:	Hymenocarina
Family:	Protocarididae
Genus:	Protocaris; Walcott, 1884
Species:	Protocaris marshi

Protocaris marshi is an extinct species of bivalved arthropod known from a single specimen collected from the Cambrian Series 2 aged Parker Formation from the Parker Quarry of northwestern Vermont, United States^[2]^[3] It is now recognised as a hymenocarine belonging to the family Protocarididae.^[4]

References

^ Charles Doolittle Walcott (1884). "On a new genus and species of Phyllopoda from the Middle Cambrian". On the Cambrian faunas of North America. Preliminary studies. Bulletin of the United States Geological Survey. Vol. 10. USGS. pp. 50–51.
^ Charles Doolittle Walcott (1886). "Introductory observations". Second contribution to the studies on the Cambrian faunas of North America. Bulletin of the United States Geological Survey. Vol. 30. USGS. pp. 11–71.
^ Pari, Giovanni; Briggs, Derek E.G.; Gaines, Robert R. (2022-02-16). "The soft-bodied biota of the Cambrian Series 2 Parker Quarry Lagerstätte of northwestern Vermont, USA". Journal of Paleontology. 96 (4): 770–790. doi:10.1017/jpa.2021.125. ISSN 0022-3360.
^ Aria, Cédric; Caron, Jean-Bernard (2017-04-26). "Burgess Shale fossils illustrate the origin of the mandibulate body plan". Nature. 545 (7652): 89–92. doi:10.1038/nature22080. ISSN 0028-0836.

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[1] Charles Doolittle Walcott (1884). "On a new genus and species of Phyllopoda from the Middle Cambrian". On the Cambrian faunas of North America. Preliminary studies. Bulletin of the United States Geological Survey. Vol. 10. USGS. pp. 50–51.

[2] Charles Doolittle Walcott (1886). "Introductory observations". Second contribution to the studies on the Cambrian faunas of North America. Bulletin of the United States Geological Survey. Vol. 30. USGS. pp. 11–71.

[3] Pari, Giovanni; Briggs, Derek E.G.; Gaines, Robert R. (2022-02-16). "The soft-bodied biota of the Cambrian Series 2 Parker Quarry Lagerstätte of northwestern Vermont, USA". Journal of Paleontology. 96 (4): 770–790. doi:10.1017/jpa.2021.125. ISSN 0022-3360.

[4] Aria, Cédric; Caron, Jean-Bernard (2017-04-26). "Burgess Shale fossils illustrate the origin of the mandibulate body plan". Nature. 545 (7652): 89–92. doi:10.1038/nature22080. ISSN 0028-0836.

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