MSirmon Posted March 8, 2017 Share Posted March 8, 2017 Found what I believe is a water worn echinoid on bank of the Concho River near San Angelo TX. I believe this is the San Angelo formation. Thoughts? Link to comment Share on other sites More sharing options...
Coco Posted March 9, 2017 Share Posted March 9, 2017 Can't see something. Are you able to see on the top of that a star with 5 arms ? Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
MSirmon Posted March 9, 2017 Author Share Posted March 9, 2017 Link to comment Share on other sites More sharing options...
Guguita2104 Posted March 9, 2017 Share Posted March 9, 2017 Interesting, I really think this is an irregular sea urchin.However, it would be easier if you removed some matrix/sediments that are still attached to it. Regards, Link to comment Share on other sites More sharing options...
erose Posted March 9, 2017 Share Posted March 9, 2017 Could be the ubiquitous Coenholectypus sp. Fairly common in many of the Texas Cretaceous formations. Problem is the camera is focusing on the surface it is sitting on, not the fossil itself. 1 Link to comment Share on other sites More sharing options...
MSirmon Posted March 9, 2017 Author Share Posted March 9, 2017 I'm going to try to remove some of the matrix and then put it on a more neutral background to see if I can get a better photo. Link to comment Share on other sites More sharing options...
MSirmon Posted March 9, 2017 Author Share Posted March 9, 2017 I have cleaned some of the matrix out but am unsure how much further I should try to go. Also think these pictures are a little clearer. Link to comment Share on other sites More sharing options...
sixgill pete Posted March 9, 2017 Share Posted March 9, 2017 After looking at the new pictures, I think it is an extremely worn echinoid. Enlarging and then cropping the photo of the top side I believe I can see faint petal outlines. But, it is way to worn to even attempt an ID. Keep looking, a good quality one is out there somewhere. Bulldozers and dirt Bulldozers and dirt behind the trailer, my desert Them red clay piles are heaven on earth I get my rocks off, bulldozers and dirt Patterson Hood; Drive-By Truckers May 2016 May 2012 Aug 2013, May 2016, Apr 2020 Oct 2022 Link to comment Share on other sites More sharing options...
Coco Posted March 9, 2017 Share Posted March 9, 2017 OK for sea urchin : we can see on MSirmon's last pic the periproct and the peristom... Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
erose Posted March 10, 2017 Share Posted March 10, 2017 It is an urchin. Look up: Coenholectypus planatus. Fairly common in the Trinity and Fredericksberg Groups. Link to comment Share on other sites More sharing options...
abyssunder Posted March 10, 2017 Share Posted March 10, 2017 No doubt, it's an echinoid. " 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...
MSirmon Posted March 10, 2017 Author Share Posted March 10, 2017 Thank you all Link to comment Share on other sites More sharing options...
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