Jurassicz1 Posted October 13, 2020 Share Posted October 13, 2020 Found this in a Swedish beach. The fossils there are from denmark. The top looks like a Eroded sea urchin but not sure what the other one is. Link to comment Share on other sites More sharing options...
val horn Posted October 15, 2020 Share Posted October 15, 2020 It seems to have too many segments for a sea urchin ( 5 fold symmetry) maybe gastropod or ammonite if it as a fossil. Can you get other pictures? Link to comment Share on other sites More sharing options...
Jurassicz1 Posted October 15, 2020 Author Share Posted October 15, 2020 10 hours ago, val horn said: It seems to have too many segments for a sea urchin ( 5 fold symmetry) maybe gastropod or ammonite if it as a fossil. Can you get other pictures? Heres some picures Link to comment Share on other sites More sharing options...
val horn Posted October 15, 2020 Share Posted October 15, 2020 this is one of my broken sea urchin from texas, it was apparently crushed after it was buried and before it fossilized. It has some similarities to yours but it does still have the sea urchin texture and places where you see the 5 arm center. I am not sure if I have helped confirm or deny your guess Link to comment Share on other sites More sharing options...
Coco Posted October 16, 2020 Share Posted October 16, 2020 Hi, I don’t see any evidence that it’s a sea urchin per se. No ambulacra, no interambulacra plate, no pore, no gonopore... Coco 2 ---------------------- 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...
Rockwood Posted October 16, 2020 Share Posted October 16, 2020 Septarian concretions have none of the above. Maybe ? Link to comment Share on other sites More sharing options...
Johannes Posted October 18, 2020 Share Posted October 18, 2020 Its a very small part of a very eroded irregular Sea Urchin. Link to comment Share on other sites More sharing options...
Coco Posted October 18, 2020 Share Posted October 18, 2020 Hi, What makes it possible to affirm this ? 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...
Johannes Posted October 18, 2020 Share Posted October 18, 2020 The geometry of the plates (the ones preserved here are from the bottom side, maybe Echinocorys). Link to comment Share on other sites More sharing options...
abyssunder Posted October 18, 2020 Share Posted October 18, 2020 There are some kind of sutures between the plates, so I think they are not proper for septarian concretions/nodules. 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...
Rockwood Posted October 18, 2020 Share Posted October 18, 2020 50 minutes ago, abyssunder said: There are some kind of sutures between the plates, so I think they are not proper for septarian concretions/nodules. Son of a gun ! He's right. There are definite features of some sort there. Link to comment Share on other sites More sharing options...
caterpillar Posted October 19, 2020 Share Posted October 19, 2020 I agree with the crushed part of irregular echinid http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
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