Malcolmt Posted April 15, 2015 Share Posted April 15, 2015 (edited) Here is one for you knowledgeable folks. The fossil does not actually belong to me .The individual who found this specimen is a very experienced collector and has never seen this one before in either the verulam or the BobCaygeon. It was found last season in either the bottom of the verulam formation or the top of the BobCaygeon Ordovician formation near Brechin, Ontario Canada. We are generally calling this a cystoid or a crinoid. Some thoughts so far are (in order of our thinking) Balacrinus sp archeocrinus lacunosusNeoarcheocrinusRare cystite Jump in with your thoughts Edited April 15, 2015 by Malcolmt Link to comment Share on other sites More sharing options...
Malcolmt Posted April 15, 2015 Author Share Posted April 15, 2015 Slightly different view Link to comment Share on other sites More sharing options...
abyssunder Posted April 15, 2015 Share Posted April 15, 2015 In my opinion,could be a Cystoid.I see irregularly arranged numerous plates and a characteristic pore system that pierce them. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
piranha Posted April 15, 2015 Share Posted April 15, 2015 You might be correct on Balacrinus. Here's a side by side comparison: Hessin, W.A. (2009) South-Central Ontario Fossils: A Guide to the Ancient Marine Life of the Region. Cobourg, Ontario, Canada, 286 pp. Link to comment Share on other sites More sharing options...
Malcolmt Posted April 15, 2015 Author Share Posted April 15, 2015 I have the Hessin material and based primarily on that reference Balacrinus was my first choice but there seem to be fewer plates than in Hessin's example. He notes that balacrinus is from the UK and that it is pretty much unknown in North America other than the example, he shows in his book. Archeocrinus is found very close to where this specimen was found hence why it was my second choice.. Link to comment Share on other sites More sharing options...
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