syl1219s Posted February 13 Share Posted February 13 (edited) Someone call it Paralejurus spatuliformis and others Paralejurus hamlagdadicus. What is this? Edited February 13 by dlatpdud Link to comment Share on other sites More sharing options...
Coco Posted February 13 Share Posted February 13 @piranha 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...
piranha Posted February 14 Share Posted February 14 Paralejurus spatuliformis is a better match with the median rib subdivided by a shallow longitudinal furrow. 1 1 Link to comment Share on other sites More sharing options...
citronkitten Posted February 14 Share Posted February 14 I recognize this may be a long shot, but when I saw the trio of images posted, I immediately thought of this piece that I'm having trouble with. It was suggested to be a shell casting, but I'm not sure which shell or for certain. The overall shape and vertical lines are similar, although perhaps the lines on my piece are too straight to match to the images above. Would be interested to hear thoughts, even if it's a resounding "no"! 1 Link to comment Share on other sites More sharing options...
ClearLake Posted February 14 Share Posted February 14 3 hours ago, citronkitten said: I recognize this may be a long shot, but when I saw the trio of images posted Is this from your Peace River material you have been showing? If so, then a resounding No is appropriate. Even if from somewhere else, I think a shell imprint is many times more likely than a trilobite fragment, especially this trilobite. 1 Link to comment Share on other sites More sharing options...
citronkitten Posted February 14 Share Posted February 14 6 minutes ago, ClearLake said: Is this from your Peace River material you have been showing? If so, then a resounding No is appropriate. Even if from somewhere else, I think a shell imprint is many times more likely than a trilobite fragment, especially this trilobite. Ah, great. Thank you for clarifying! Yes, it's from the Peace River; sorry, should've mentioned that. Will stick with shell imprint then - I was overly optimistic at the shape and lines. Cheers! 1 Link to comment Share on other sites More sharing options...
ClearLake Posted February 14 Share Posted February 14 4 minutes ago, citronkitten said: Yes, it's from the Peace River And I should have added that it is a resounding no if from the Peace River because trilobites are not known from Florida (except maybe a piece of one from a drilled well if I recall correctly). The surface geology of Florida (and hence the material in its river beds) is all much too young for trilobites. 1 Link to comment Share on other sites More sharing options...
citronkitten Posted February 14 Share Posted February 14 Just now, ClearLake said: And I should have added that it is a resounding no if from the Peace River because trilobites are not known from Florida (except maybe a piece of one from a drilled well if I recall correctly). The surface geology of Florida (and hence the material in its river beds) is all much too young for trilobites. Oh, that's good to know! I figured it was because the fossil was missing some particular features, but knowing that it's highly unlikely to exist in the region is even more useful. Thank you again for the further clarification. Cheers~ 1 Link to comment Share on other sites More sharing options...
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