Carl Posted February 22, 2022 Share Posted February 22, 2022 Hit the Aquia Fm at Douglas Point, MD on Sunday and found some beauties. I am really unfamiliar with Paleocene sharks and wondered if anyone wanted to help ID some of these. The one I'm most interested in is the small one on the left pointing outwards. Sorry for the lack of scale - the biggest aren't much longer than a cm. Thanks! 2 Link to comment Share on other sites More sharing options...
Adam86cucv Posted February 22, 2022 Share Posted February 22, 2022 Elasmo is a great resource. A some of them look like sand tiger teeth. 1 Link to comment Share on other sites More sharing options...
Carl Posted February 22, 2022 Author Share Posted February 22, 2022 4 hours ago, Adam86cucv said: Elasmo is a great resource. A some of them look like sand tiger teeth. Yeah, I poked around there a bit but couldn't find perfect matches for some of these. Link to comment Share on other sites More sharing options...
Adam86cucv Posted February 22, 2022 Share Posted February 22, 2022 Fossil Guy also has some identification pictures. If I were to venture a guess I would say the tooth you're asking about maybe a Cretolamna. Link to comment Share on other sites More sharing options...
Jeffrey P Posted February 22, 2022 Share Posted February 22, 2022 That one on the left, does it have two cusps or four? Link to comment Share on other sites More sharing options...
hemipristis Posted February 23, 2022 Share Posted February 23, 2022 (edited) I agree with Adam that the one tooth may be a Cretolamna. As for the elongate 'sand shark' teeth, they're tough to ID even when perfect. Add some water tumbling and... If a close look reveals any fine striations running up and down the blade, it's a rather safe bet that a tooth is a Striatolamia sp., the tooth so abundant that elasmo.com called it "The shark that ate the Paleogene' That said, the tooth in the upper right with the more substantive blade that "points" to the 7pm position is not a Striatolamia. Edited February 23, 2022 by hemipristis 1 'Those who cannot remember the past are condemned to repeat it.' George Santayana Link to comment Share on other sites More sharing options...
Carl Posted February 24, 2022 Author Share Posted February 24, 2022 On 2/22/2022 at 3:31 PM, Jeffrey P said: That one on the left, does it have two cusps or four? It actually has five. I'm now thinking it;s Abdounia beaugei. Cretalamna looks quite different. Link to comment Share on other sites More sharing options...
Carl Posted February 24, 2022 Author Share Posted February 24, 2022 Just now, Carl said: It actually has five, if you include the main cusp. I'm now thinking it;s Abdounia beaugei. Cretalamna looks quite different. Link to comment Share on other sites More sharing options...
Searcher78 Posted February 24, 2022 Share Posted February 24, 2022 With two cusps on each side, could it be a worn Brachycarcharias lerichei? Link to comment Share on other sites More sharing options...
Carl Posted February 24, 2022 Author Share Posted February 24, 2022 12 minutes ago, Searcher78 said: With two cusps on each side, could it be a worn Brachycarcharias lerichei? Hmmmmmm... That's possible, too, I suppose. Thanks! Link to comment Share on other sites More sharing options...
shark57 Posted February 26, 2022 Share Posted February 26, 2022 Tooth is way too big to be Abounia. Link to comment Share on other sites More sharing options...
MarcoSr Posted February 26, 2022 Share Posted February 26, 2022 On 2/24/2022 at 8:27 AM, Carl said: It actually has five. I'm now thinking it;s Abdounia beaugei. Cretalamna looks quite different. On 2/24/2022 at 3:43 PM, Searcher78 said: With two cusps on each side, could it be a worn Brachycarcharias lerichei? 7 hours ago, shark57 said: Tooth is way too big to be Abounia. I agree that the tooth is not Cretalamna or Abounia. Looks like Brachycarcharias lerichei to me. Marco Sr. 1 "Any day that you can fossil hunt is a great day." My family fossil website Some Of My Shark, Ray, Fish And Other Micros My Extant Shark Jaw Collection Link to comment Share on other sites More sharing options...
Carl Posted February 28, 2022 Author Share Posted February 28, 2022 (edited) On 2/26/2022 at 6:54 AM, MarcoSr said: I agree that the tooth is not Cretalamna or Abounia. Looks like Brachycarcharias lerichei to me. Marco Sr. On 2/25/2022 at 11:04 PM, shark57 said: Tooth is way too big to be Abounia. Thanks - I wasn't even aware I was overlooking scale. Edited February 28, 2022 by Carl Link to comment Share on other sites More sharing options...
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