Zacanthoides Explained

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

• Z. idahoensis
• Z. kelsayae
• Z. romingeri (type species)
• Z. holopygus (unrecognized)
• Z. gilberti (unrecognized)

Synonyms

Embolimus is a synonym.^[3]

Notes and References

1. http://paleodb.org/cgi-bin/bridge.pl "Zacanthoides"
2. Coppold, Murray and Wayne Powell (2006). A Geoscience Guide to the Burgess Shale, p.58. The Burgess Shale Geoscience Foundation, Field, British Columbia. .
3. Sepkoski, J.J. Jr. 2002. A compendium of fossil marine animal genera. D.J. Jablonski & M.L. Foote (eds.). Bulletins of American Paleontology 363: 1–560. Sepkoski's Online Genus Database
4. Jell, P.A. & J.M. Adrain 2003. Web site: Available generic names for trilobites. .   Memoirs of the Queensland Museum 48(2): 331-553. [see also [http://www.trilobites.info/genera.htm Alphabetical Listing of Trilobite Generic Names]^[3]

   External links

   • Web site: 2011. Zacanthoides romingeri. Burgess Shale Fossil Gallery. Virtual Museum of Canada. https://web.archive.org/web/20201112025257/http://burgess-shale.rom.on.ca/en/fossil-gallery/view-species.php?id=15. 2020-11-12. dead. 2023-01-21.