Meganeura Posted March 24, 2023 Share Posted March 24, 2023 While sorting through some of my more recent finds I came across this very small shark tooth I found. My initial thought was tiger, but it doesn’t seem to match any Galeocerdo species I know of, nor does it match P. Contortus. Any help would be appreciated! @hemipristis @Al Dente @MarcoSr Fossils? I dig it. Link to comment Share on other sites More sharing options...
Al Dente Posted March 24, 2023 Share Posted March 24, 2023 Carcharhinus. 1 Link to comment Share on other sites More sharing options...
jikohr Posted March 24, 2023 Share Posted March 24, 2023 (edited) 46 minutes ago, Al Dente said: Carcharhinus. You sure that's not Galeorhinus? From elasmo. Top one is Lee Creek estimated to be Pliocene Bottom one is California Mid Miocene. Though I've personally found teeth exactly like that in Eocene outcrops as well, also described as Galeorhinus. Edited March 24, 2023 by jikohr added pictures Link to comment Share on other sites More sharing options...
Al Dente Posted March 24, 2023 Share Posted March 24, 2023 (edited) 1 hour ago, jikohr said: You sure that's not Galeorhinus? I'm pretty confident it is Carcharhinus, but we would need to see the lingual labial side of the tooth to see if there is an enamel bulge extending over the root that is a characteristic of Galeorhinus. Edited March 24, 2023 by Al Dente Link to comment Share on other sites More sharing options...
Meganeura Posted March 24, 2023 Author Share Posted March 24, 2023 52 minutes ago, Al Dente said: I'm pretty confident it is Carcharhinus, but we would need to see the lingual side of the tooth to see if there is an enamel bulge extending over the root that is a characteristic of Galeorhinus. I’ll grab a pic tonight! Fossils? I dig it. Link to comment Share on other sites More sharing options...
Al Dente Posted March 25, 2023 Share Posted March 25, 2023 Here are a couple similar teeth identified as Carcharhinus signatus from the publication “Fossil sharks and rays of Gainesville creeks Alachua County, Florida: Hawthorn Group (middle Miocene to lower Pliocene)”. 2 Link to comment Share on other sites More sharing options...
Meganeura Posted March 25, 2023 Author Share Posted March 25, 2023 7 minutes ago, Al Dente said: Here are a couple similar teeth identified as Carcharhinus signatus from the publication “Fossil sharks and rays of Gainesville creeks Alachua County, Florida: Hawthorn Group (middle Miocene to lower Pliocene)”. I totally forgot to grab a pic of the opposite side! I’ll do that tonight. They both look similar, but I’m leaning a bit more towards C. signatus Fossils? I dig it. Link to comment Share on other sites More sharing options...
hemipristis Posted March 25, 2023 Share Posted March 25, 2023 I concur with @Al Dente The root speaks genus Carcharhinus, and C. signatus is a good fit It's certainly nuanced! 1 'Those who cannot remember the past are condemned to repeat it.' George Santayana Link to comment Share on other sites More sharing options...
Meganeura Posted March 26, 2023 Author Share Posted March 26, 2023 On 3/25/2023 at 7:01 AM, Al Dente said: Here are a couple similar teeth identified as Carcharhinus signatus from the publication “Fossil sharks and rays of Gainesville creeks Alachua County, Florida: Hawthorn Group (middle Miocene to lower Pliocene)”. On 3/25/2023 at 7:09 AM, hemipristis said: I concur with @Al Dente The root speaks genus Carcharhinus, and C. signatus is a good fit It's certainly nuanced! Finally got around to the pics - sorry for the delay! 1 Fossils? I dig it. Link to comment Share on other sites More sharing options...
hemipristis Posted March 27, 2023 Share Posted March 27, 2023 13 hours ago, Meganeura said: Finally got around to the pics - sorry for the delay! I’m reasonably sure C. signatus . Good call @Al Dente 1 'Those who cannot remember the past are condemned to repeat it.' George Santayana Link to comment Share on other sites More sharing options...
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