Zacanthoides

Zacanthoides
Zacanthoides typicalis by C.D Walcott (1886)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	† Artiopoda
Class:	† Trilobita
Order:	† Corynexochida
Family:	† Zacanthoididae
Genus:	† Zacanthoides Walcott, 1888

Zacanthoides is an extinct Cambrian genus of corynexochid trilobite. It was a nektobenthic predatory carnivore. Its remains have been found in Canada (British Columbia, especially in the Burgess Shale, and Newfoundland), Greenland, Mexico, and the United States (Alaska, Nevada, Utah, Vermont, and Idaho for which Z. idahoensis is named). ^[1] Its major characteristics are a slender exoskeleton with 9 thoracic segments, pleurae with long spines, additional spines on the axial rings, and a pygidium that is considerably smaller than its cephalon. ^[2]

Species

• Zacanthoides idahoensis
• Zacanthoides kelsayae
• Zacanthoides romingeri (type species)
• Zacanthoides holopygus (unrecognized)
• Zacanthoides gilberti (unrecognized)

Synonyms

Embolimus is a synonym. ^{[3] [4]}

References

1. "Zacanthoides" Paleobiology Database, accessed March 28, 2011
2. Coppold, Murray and Wayne Powell (2006). A Geoscience Guide to the Burgess Shale, p.58. The Burgess Shale Geoscience Foundation, Field, British Columbia. ISBN   0-9780132-0-4.
3. Jell, P.A. & J.M. Adrain 2003. "Available generic names for trilobites" (PDF). (1.52  MiB)Memoirs of the Queensland Museum48(2): 331-553. [see also Alphabetical Listing of Trilobite Generic Names
4. Sepkoski, J.J. Jr. 2002. A compendium of fossil marine animal genera. D.J. Jablonski & M.L. Foote (eds.). Bulletins of American Paleontology363: 1–560. Sepkoski's Online Genus Database

External links

• "Zacanthoides romingeri". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011. Archived from the original on 2020-11-12. Retrieved 2023-01-21.