Mart1980 Posted October 26, 2022 Share Posted October 26, 2022 (edited) Recently I received a box full of sea urchins from Eben-Emael (Marnebel) Belgium. I have been actively collecting sea urchins for a few months now and find it especially difficult to properly identify the smaller urchins. Who can help me on my way? I will post photos in this topic in separate comments, so that each group of sea urchins can be identified. The squares on the background are centimeters. Edited October 26, 2022 by Mart1980 1 Link to comment Share on other sites More sharing options...
Mart1980 Posted October 26, 2022 Author Share Posted October 26, 2022 (edited) Sea urchin number 1 is the largest of the little ones. Edited October 26, 2022 by Mart1980 Link to comment Share on other sites More sharing options...
Mart1980 Posted October 26, 2022 Author Share Posted October 26, 2022 (edited) Sea urchin number 2, of these I have selected three with details. Edited October 26, 2022 by Mart1980 Link to comment Share on other sites More sharing options...
Mart1980 Posted October 26, 2022 Author Share Posted October 26, 2022 (edited) Sea urchin number 3 is as small but rounder than sea urchin number 2 Edited October 26, 2022 by Mart1980 Link to comment Share on other sites More sharing options...
Mart1980 Posted October 26, 2022 Author Share Posted October 26, 2022 (edited) Sea urchin number 4 has a conspicuous 'dot' in the center at the bottom. Edited October 26, 2022 by Mart1980 Link to comment Share on other sites More sharing options...
Mart1980 Posted October 26, 2022 Author Share Posted October 26, 2022 (edited) Sea urchins number 5. Are smaller than number 4, but maybe the same species? Edited October 26, 2022 by Mart1980 Link to comment Share on other sites More sharing options...
Mart1980 Posted October 26, 2022 Author Share Posted October 26, 2022 (edited) Sea urchin number 6 clearly has another shape. Tapers at the top. Edited October 26, 2022 by Mart1980 1 Link to comment Share on other sites More sharing options...
Mart1980 Posted October 26, 2022 Author Share Posted October 26, 2022 That's it for now. I hope someone can help me with these 6 different shapes. If other detailed photos of a shape are necessary, I will of course make them. Link to comment Share on other sites More sharing options...
JohnJ Posted October 26, 2022 Share Posted October 26, 2022 Details are critical to identification. Some of these may require cleaning to see the defining characteristics. In the meantime, check out the Echinoid Directory. @Manticocerasman @Indagator 1 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
ziggycardon Posted October 26, 2022 Share Posted October 26, 2022 Urchin number 2 is Procassidulus lapiscanri 4 & 5 are Bolbaster prunella I believe (5 is at least) 1 could be Rhyncholampas but I am not sure. 1 Interested in all things paleontology, geology, zoology, evolution, natural history and science! Professional exotic pet keeper, huge fantasy geek, explorer of the microfossil realm, member of the BVP (Belgian Association for Paleontology), Volunteer prepper at Oertijdmuseum Boxtel. View my collection topic here: The Growing Collection of Ziggycardon My animal collection at the "Members pet" topic Ziggycardon's exploration of the microfossil realm Trips to Eben Emael (Maastrichtian of Belgium) My latest fossil hunt Next project will be a dedicated prepping space. "A mind needs books as a sword needs a whetstone, if it is to keep its edge." - Tyrion Lannister Link to comment Share on other sites More sharing options...
Mart1980 Posted October 26, 2022 Author Share Posted October 26, 2022 Thanks for thinking with me. I think you are right on 2, 4 and 5 Ziggycardon! On the Dutch forum a member (Caveman) gave me very good names. After checking in my books and online I can find myself in the determination. 1 = Oolopygus gr. pyriformis 2 = Procassidulus lapiscancri 3 = Catopygus fenestratus 4 & 5 = Bolbaster prunella 6 = Faujasia apicalis Yes I have to clean them further. Unfortunately, my health prevents me from doing work that requires fine methodology. So apologies for some messy sea urchins for now, but I'm already happy with the determination. Link to comment Share on other sites More sharing options...
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