Protocaris Explained

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[1] [2] The specimen is preserved in top-down view and has a bivalved carapace, a segmented trunk and a forked tail. Its precise taxonomic position is uncertain, due to the limited nature of known remains, but it is suggested to be a member of Hymenocarina belonging to the family Protocarididae, which also includes Tokummia and Branchiocaris.[3]

Notes and References

  1. Book: Charles Doolittle Walcott . 1886 . Second contribution to the studies on the Cambrian faunas of North America . 30 . Bulletin of the United States Geological Survey . . 11–71 . Introductory observations. Charles Doolittle Walcott .
  2. 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 . 10.1017/jpa.2021.125 . 0022-3360. free .
  3. Aria . Cédric . Caron . Jean-Bernard . 2017-04-26 . Burgess Shale fossils illustrate the origin of the mandibulate body plan . Nature . 545 . 7652 . 89–92 . 10.1038/nature22080 . 0028-0836.

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