Jame Stuart Posted September 16, 2020 Share Posted September 16, 2020 Dear TFF members, Ive taken a photo of all the shark teeth that I am having trouble identifying. Could anyone help point out if I got any ID's wrong? These were all found at Calvert Cliffs, MD. Top 3 rows near Choptank and St Marys Formation and bottom half underneath Calvert Formation. 1. Snaggletooth (serrations are similar on both, the first one has a strange enamel color) 2. First two are white sharks, probably plicatilis? Third, I have no clue 3. Requiem shark tooth (just suspicious because I've never found a tooth in the area with that color) 4. Posterior tiger shark teeth 5. Worn down tiger shark? 6. Snaggletooth front tooth piece 7. Cow shark (is this pathological? ive found a couple of other cow shark teeth and none of them have opposing edges) Thanks for the help, James Link to comment Share on other sites More sharing options...
bthemoose Posted September 16, 2020 Share Posted September 16, 2020 1. Agree with Hemipristis serra (snaggletooth) -- the first one looks like the enamel may be worn down/away in the middle which accounts for the coloring. 2. Third one looks like Carcharodon hastalis (extinct white). The first one probably is as well. I can't tell on the second. 3. Hard to see from the photo, but Carcharhinus sp. (requieum) looks correct; the color isn't a problem/isn't diagnostic of species. 4. Agree with Galeocerdo aduncus (tiger). 5. These look like Physogaleus contortus ("tiger-like shark"). 6. Hard to see from the photo, but Hemipristis serra could be correct. 7. This looks like a cow shark (I think Notorynchus cepedianus but others should be able to confirm for you) lower symphyseal tooth -- that's a great/rare find! 2 Link to comment Share on other sites More sharing options...
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