tentacles or not Homepage › Forums › What Is It? › tentacles or not Tagged: echinoid This topic has 3 replies, 4 voices, and was last updated 3 years, 2 months ago by Bill Thompson. Viewing 4 posts - 1 through 4 (of 4 total) Author Posts October 13, 2016 at 9:45 am #13691 Bruce SalasParticipant Hi,on this rock made by rudists is something like tentacles,know somebody what it is?tnx. Attachments:You must be logged in to view attached files. October 13, 2016 at 9:51 am #13695 Victor PerezParticipant Hmmm, it definitely does look like a fossil of some kind. Perhaps a fragment of an echinoid? December 18, 2016 at 2:20 pm #16881 Forest PostParticipant pebble January 19, 2018 at 7:00 pm #30244 Bill ThompsonParticipant The round circles look like tubercles from an echinoid. Several different genera have similar tubercles. One such is Hemipatagus. See: http://www.nhm.ac.uk/our-science/data/echinoid-directory/taxa/specimen.jsp?id=1763 With more info such as formation, age, locality, etc. I and other might be able to help more. Thanks, Bill Author Posts Viewing 4 posts - 1 through 4 (of 4 total) You must be logged in to reply to this topic.