I'm hoping someone can help me. I found this beautiful shark tooth at Ramsholt, Suffolk on Saturday. My initial thoughts were that it was a Cosmopolitodus hastalis tooth, which are faily common at Ramsholt. However, on closer examination, the cutting edges of the tooth appear to be serrated which suggests it could be something else. I remember reading somewhere that Cosmos are believed to be related to Great White Sharks (Caracharodon) on account of their similar dentition, but that Cosmo teeth always have smooth edges, whereas Carcharodon teeth are serrated. I appreciate the serrations are fairly faint, but my understanding is that these teeth are from earlier Miocene strata and were redoposited in the Red Crag sediments, and were abraded quite heavily prior to being re-fossilised in the Red Crag. Can anyone confirm the ID of this tooth?
Hi, still not heard anything on this one . I'd appreciate any thoughts on ID please.
Still not had a reply on this one. Is there anyone at the museum who could ID this for me? Any thoughts would me much appreciated!
Hi posted this two years ago, and haven't had a response :( Any fossil shark specialists out there? I'm 99% certain this is a great white tooth based on the serrations, but it would be great to have this verified. It came from the red crag in Ramsholt, Suffolk.
I have forwarded your link to shark specialists and hope to get back to you soon. Apologies for the delay in response, your enquiry came whilst I was away from the museum and I have only just seen the post.
All the best,
I have heard back from Dr. Charlie Underwood who says:
Carcharodon and Cosmopolitodus are essentially the same thing, one is just a serrated species of the other and they should probably be considered the same genus. In traditional naming though, if it has serrations, it is Carcharodon. Whilst partly serrated forms that are intermediate exist, they appear to be restricted to the Pacific so I would be inclined to put this as C. carcharias with a high degree of abrasion (and possibly in life wear) removing the serrations. The fact that the root has gone suggests the preservation is not so great. There is also a lot of reworking in the Red Crag, with fossils from the Pliocene (Coralline Crag), Miocene (not present as a rock unit on land) and Eocene (London Clay) all being present, so this may have been sitting around since the Pliocene".
"I agree it is a late Pliocene or early Pleistocene (whatever age the basal Red Crag boxstone bed is considered) tooth of Carcharodon carcharias. There a few in the collection listed in Woodward's catalogue p.420 as C. rondeletti - Brown Coll."
I hope this additional information is of interest,