akolsrud Posted February 27, 2015 Share Posted February 27, 2015 Is there a way to recognize the Olenellus subspecies by looking at the cephalons only? -Arild Link to comment Share on other sites More sharing options...
FossilDAWG Posted February 27, 2015 Share Posted February 27, 2015 What subspecies are you interested in? I must confess I was not aware of subspecies within Olenellus. Don Link to comment Share on other sites More sharing options...
Raggedy Man Posted February 27, 2015 Share Posted February 27, 2015 A photo of said trilobite would go a long way in helping you. Thanks ...I'm back. Link to comment Share on other sites More sharing options...
piranha Posted February 27, 2015 Share Posted February 27, 2015 There are many olenellid species, but no subspecies are mentioned in the literature. Here is an excellent list of papers to assist with your research on olenellid trilobites: Whittington, H.B. (1989) Olenelloid trilobites: Type species, functional morphology and higher classification. Philosophical Transactions of the Royal Society of London, Series B, 324:111-147 Palmer, A.R., & Repina, L.N. (1993) Through a glass darkly: Taxonomy, phylogeny, and biostratigraphy of the Olenellina. University of Kansas Paleontological Contributions, New Series, 3:1-35 PDF LINK Lieberman, B.S. (1998) Cladistic analysis of the Early Cambrian olenelloid trilobites. Journal of Paleontology, 72(1):59-78 Lieberman, B.S. (1999) Systematic revision of the Olenelloidea (Trilobita, Cambrian). Bulletin of the Peabody Museum of Natural History, Yale University, 45:1-150 PDF LINK 3 Link to comment Share on other sites More sharing options...
akolsrud Posted March 12, 2015 Author Share Posted March 12, 2015 My apology, I didn't elaborate very well on my question. My question should have said how can you tell Olenellus gilberti, Olenellus clarki, Mesonacis fremonti, Bristolia mohavensis, Bristolia bristolensis and Bristolia insolens apart from the Amboy/Cadiz/Chambless area given just the cephalons. There are pictures on the web, but it is hard to transform that knowledge to actual specimens at hand. -Arild Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now