masonboro37 Posted May 19, 2014 Share Posted May 19, 2014 (edited) I have been slowly going through bags of matrix which I picked up at a recent trip to the Castle Hayne quarry in North Carolina. The area the sediment came from is the Castle Hayne Formation. I have been screening and sifting the matrix and using an even smaller screen to help hold the micros. I have been finding forams, crinoid parts, interesting little specimens which I am yet to identify and just other beautiful micro's. I was using my scope last night and saw the shimmer of enamel and low and behold a shark tooth. I have not really found many teeth in the matrix so far. I think this tooth is Nebrius obliquus/thielensis. Nurse Shark or as stated on Elasmo Tawny Nurse Shark. My book however has a very similar tooth which is the thielensis species. The tooth is about 2mm wide. Not in the best condition, but it is a keeper for me. If anyone could weigh in about the id, I really appreciate it. Libby Edited May 19, 2014 by masonboro37 Process of identification "mistakes create wisdom". Link to comment Share on other sites More sharing options...
Sélacien34 Posted May 19, 2014 Share Posted May 19, 2014 (edited) I think that you're right, Nebrius thielensis (Winkler), recorded in this formation. CASE, Gerard R. & Paul D. BORODIN:A Middle Eocene Selachian Fauna from the Castle Hayne Limestone Formation of Duplin County, North Carolina A new selachian fauna is described from the Middle Eocene Castle Hayne Limestone Formation at Rosehill, Duplin County, North Carolina. This fauna contains four (4) new species: Heterodontus elongatus n. sp., Odontaspis carolinensis n. sp., Paragaleus duplinensis n. sp., and Physogaleus rosehillensis n. sp. Additional taxa recovered along with the four new species are: Xiphodolamia sp.; Striatolamia macrota (Agassiz); Carcharias sp.; Otodus obliquus (Agassiz); Isurus praecursor (Leriche); Cretolamna lerichei (Casier); Nebrius thielensis (Winkler); Galeocerdo eaglesomei White; Galeocerdo latidens (Agassiz); Abdounia enniskilleni (White); Abdounia recticona (Winkler); Negaprion kraussei (Probst); Physogaleus sp.; Galeorhinus galeus (Linnaeus); Pristis cf. P. lathami Galeotti; Aetobatis sp.; and Myliobatis sp. Edited May 19, 2014 by Sélacien34 1 Link to comment Share on other sites More sharing options...
sixgill pete Posted May 19, 2014 Share Posted May 19, 2014 I agree. Most likely thielensis. They are not a common tooth at all from any of the MM quarries. I have a grand total of 2 and they are both from Rocky Point. BTW are you coming to the festival next weekend Libby? Bulldozers and dirt Bulldozers and dirt behind the trailer, my desert Them red clay piles are heaven on earth I get my rocks off, bulldozers and dirt Patterson Hood; Drive-By Truckers May 2016 May 2012 Aug 2013, May 2016, Apr 2020 Oct 2022 Link to comment Share on other sites More sharing options...
John Hamilton Posted May 20, 2014 Share Posted May 20, 2014 Very nice find Libby! I found two in the matrix I brought home from the March Castle Hayne trip. Yours appears to be preserved much better than mine though. Link to comment Share on other sites More sharing options...
masonboro37 Posted May 23, 2014 Author Share Posted May 23, 2014 (edited) Thank you for the information Selacien34, Don and John! Much appreciated! Don, not sure yet for the festival. Probably not. You will have to tell me all about it! John, your Ric tooth is still on my mind. That was an amazing find, so happy I saw it in person too. Have a great weekend everyone! Lib Edited May 23, 2014 by masonboro37 Process of identification "mistakes create wisdom". Link to comment Share on other sites More sharing options...
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