georocks58 Posted February 19, 2021 Share Posted February 19, 2021 Hello, I believe this to be a "holdfast" from the Crawfordsville Indiana crinoid locality. I am hoping that someone could help with identification of the particular species, and also if there is a scientific name for "holdfast." Thank you! Link to comment Share on other sites More sharing options...
jpc Posted February 19, 2021 Share Posted February 19, 2021 I don't know much about crinoids, but is this the holdfast or the crown? 1 Link to comment Share on other sites More sharing options...
IsaacTheFossilMan Posted February 19, 2021 Share Posted February 19, 2021 Looks like a crinoid's crown to me. 1 ~ Isaac; www.isaactfm.com "Don't move! He can't see us if we don't move!" - Alan Grant Come to the spring that is The Fossil Forum, where the stream of warmth and knowledge never runs dry. Link to comment Share on other sites More sharing options...
georocks58 Posted February 19, 2021 Author Share Posted February 19, 2021 Aha! I just assumed from the presentation that it was a holdfast, could very well be mistaken. Any idea of species? Thank you! Link to comment Share on other sites More sharing options...
abyssunder Posted February 20, 2021 Share Posted February 20, 2021 I can't help you with the genus or species of this nice crinoid, but as is was said before, it's not a holdfast (not because it hasn't the branching character) but because of the mono or biserial arrangement of plates of the arms ( which is not proper for holdfast). Crinoid holdfasts have the same characters of their columns with the cirri branching. In fact, everything is based on the roots. 1 " 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...
Jackson g Posted February 20, 2021 Share Posted February 20, 2021 23 hours ago, georocks58 said: Aha! I just assumed from the presentation that it was a holdfast, could very well be mistaken. Any idea of species? Thank you! Crinoid crown= brachials and calyx of the crinoid. Looks like a flexible member, you might consider Onychocrinus exculptus? Link to comment Share on other sites More sharing options...
georocks58 Posted February 21, 2021 Author Share Posted February 21, 2021 Thank you so much! Really appreciate it! Link to comment Share on other sites More sharing options...
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