LucG Posted November 18, 2019 Share Posted November 18, 2019 (edited) Hello, I've had a shark's jaw for quite some time now and I'm curious to know what type of shark it belonged to. Can anyone please give me some clues based on the photos I've attached? I'm a newbie and fossil neophyte. Thank you very much in advance, Luc Edited November 18, 2019 by LucG Badly worded message, sory. Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 18, 2019 Share Posted November 18, 2019 Welcome to the Forum. To be clear, this is not a fossil shark jaw. It is of an extant shark. @Al Dente @MarcoSr Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
LucG Posted November 18, 2019 Author Share Posted November 18, 2019 Sorry, I'm a bit confused. After browsing the forum I saw similar pictures and believed my photos could be posted under the "fossil" heading. It is clearly not a fossil, indeed. Should I move this post? Luc Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 18, 2019 Share Posted November 18, 2019 3 minutes ago, LucG said: Sorry, I'm a bit confused. After browsing the forum I saw similar pictures and believed my photos could be posted under the "fossil" heading. It is clearly not a fossil, indeed. Should I move this post? Luc No, that is fine. You are looking for Identification. I just wanted to make sure that the thousands of anonymous guests who may not know that it isn't a fossil were informed that it wasn't. No worries. Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
LucG Posted November 18, 2019 Author Share Posted November 18, 2019 Ok, thanks a lot. Better be on the safe side indeed! Link to comment Share on other sites More sharing options...
MarcoSr Posted November 18, 2019 Share Posted November 18, 2019 From what I can see in the pictures your jaw is a Carcharhinus sp. (Requiem shark) jaw. However, the pictures are not adequate enough for me to id your jaw to a species. There are 32 named species of Carcharhinus sharks. At least nine of the species have similar upper teeth to those in your pictures. I can’t really see the lower teeth features from the pictures. When identifying a Carcharhinus species you need to be able to see the tooth features clearly of all of the teeth in the upper and lower rows of teeth. You need to be able to tell if the lower teeth are serrated or not serrated. Although tooth counts can vary within a species and tooth counts can overlap among different species you need to be able to determine the number of upper and lower tooth rows to the left of the symphysis, the number of tooth rows of the small teeth in the symphysis if any, and the number of tooth rows to the right of the symphysis. You might check your jaw against the dentitions on J-elasmo at the below link: http://naka.na.coocan.jp/JAWCarcharhinidae.html 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...
LucG Posted November 18, 2019 Author Share Posted November 18, 2019 Wow, thanks a lot for that! I'll check the jaw against the ones on the website. For what it's worth I know the jaw comes from a shark caught off the coast of French guyana. I've attached two additional pictures. Thanks for your expertise, Luc Link to comment Share on other sites More sharing options...
LucG Posted November 20, 2019 Author Share Posted November 20, 2019 Thanks again for the link, I'm pretty sure it's a silky shark. Regards, Luc Link to comment Share on other sites More sharing options...
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