Emeraldella

Emeraldella
Temporal range: Burgess Shale–Drumian
Emeraldella brocki
Emeraldella brutoni
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
(unranked): †Artiopoda
(unranked): †Vicissicaudata
Genus: †Emeraldella
Walcott, 1912
Type species
Emeraldella brocki
Walcott, 1912
Other species

Emeraldella brutoni Stein, Church & Robison, 2011

Reconstruction of Emeraldella brutoni

Emeraldella is a genus of arthropod known from the Middle Cambrian of North America. The type species E. brocki was described in 1912 from the Burgess Shale.[1] 21 specimens of Emeraldella are known from the Greater Phyllopod bed, where they comprise < 0.1% of the community.[2] A re-study on the species was done in 2012.[3] A second species E. brutoni is known from the Wheeler Shale, which was described in 2011.[4] An additional specimen of E. brutoni was described in 2019, which revealed more of the anatomy.[5] It has been placed as a basal member of the clade Vicissicaudata within Artiopoda, a group of arthropods containing trilobites and their relatives.[5]

  1. ^ "II.—Cambrian Geology and Palæontology. No. 6: Middle Cambrian Beanchiopoda, Malacostraca, Trilobita, and Merostomata. By C. D. Walcott. Smithsonian Miscellaneous Collections, vol. lvii, No. 6 (publication 2051), 1912". Geological Magazine. 9 (8): 376–377. August 1912. Bibcode:1912GeoM....9..376.. doi:10.1017/s0016756800115006. ISSN 0016-7568.
  2. ^ Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. Bibcode:2006Palai..21..451C. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022. S2CID 53646959.
  3. ^ Stein, Martin; Selden, Paul A. (June 2012). "A restudy of the Burgess Shale (Cambrian) arthropod Emeraldella brocki and reassessment of its affinities". Journal of Systematic Palaeontology. 10 (2): 361–383. doi:10.1080/14772019.2011.566634. ISSN 1477-2019. S2CID 55018927.
  4. ^ "A new Cambrian arthropod, Emeraldella brutoni, from Utah". Paleontological Contributions. 2011-09-29. doi:10.17161/PC.1808.8086. hdl:1808/8086. ISSN 1946-0279.
  5. ^ a b Lerosey-Aubril, Rudy; Ortega-Hernández, Javier (2019-10-31). "Appendicular anatomy of the artiopod Emeraldella brutoni from the middle Cambrian (Drumian) of western Utah". PeerJ. 7: e7945. doi:10.7717/peerj.7945. ISSN 2167-8359. PMC 6825744. PMID 31687274.