Manticocerasman Posted June 22, 2020 Share Posted June 22, 2020 Last Saturday we finally went back to the Cretaceous deposits at the northern French coast. On some spots on the beach the gault clay deposits were visible, this delivered a few beautiful belemnites ( Neohibolites minimus ) and from time to time other small fossils washed out of the clay and scattered in the shingle. The chalk boulders near the clifs were not very productive, apart from a very rare Ptychodus tooth. This one made our day. 22 growing old is mandatory but growing up is optional. Link to comment Share on other sites More sharing options...
Monica Posted June 22, 2020 Share Posted June 22, 2020 That Ptychodus tooth is a stunning find - congratulations!!! Link to comment Share on other sites More sharing options...
fossilnut Posted June 22, 2020 Share Posted June 22, 2020 Love the belemnite. Very colorful. What mineral? Nice to be able to be out on the beach. I am envious. 1 Link to comment Share on other sites More sharing options...
The Amateur Paleontologist Posted June 22, 2020 Share Posted June 22, 2020 Nice trip report Looks like you guys had a great hunt!! Absolutely love the Neohibolites, and of course, that beautiful Ptychodus tooth 1 Opalised fossils are the best: a wonderful mix between paleontology and mineralogy! Q. Where do dinosaurs study? A. At Khaan Academy!... My ResearchGate profile Link to comment Share on other sites More sharing options...
RJB Posted June 22, 2020 Share Posted June 22, 2020 The quality of preservation is outstanding! RB 2 Link to comment Share on other sites More sharing options...
Trevor Posted June 22, 2020 Share Posted June 22, 2020 Excellent finds, especially the Ptychodus tooth, and very nice photos. The French coast looks like a beautiful place to collect fossils.; hopefully, you can get out again soon. 1 : ) Link to comment Share on other sites More sharing options...
LSCHNELLE Posted June 24, 2020 Share Posted June 24, 2020 I believe that is a Ptychodus decurrens from the Turonian age Chalk Group member. Great find! 1 Link to comment Share on other sites More sharing options...
Emthegem Posted June 24, 2020 Share Posted June 24, 2020 Wow I loveee the colour on that belemnite, its stunning! 1 - Link to comment Share on other sites More sharing options...
Manticocerasman Posted June 24, 2020 Author Share Posted June 24, 2020 5 hours ago, LSCHNELLE said: I believe that is a Ptychodus decurrens from the Turonian age Chalk Group member. Great find! THX, I'am not familliar with the Ptychodus species. So I don't know if the European specimens are the same species in the US. Also the tooth is from the middle Cenomanian ( Acanthoceras rhotomagens zone ), not the turonian growing old is mandatory but growing up is optional. Link to comment Share on other sites More sharing options...
LSCHNELLE Posted June 24, 2020 Share Posted June 24, 2020 7 hours ago, Manticocerasman said: THX, I'am not familliar with the Ptychodus species. So I don't know if the European specimens are the same species in the US. Also the tooth is from the middle Cenomanian ( Acanthoceras rhotomagens zone ), not the turonian Ptychodus decurrens does first occur in the middle Cenomanian extending through the middle Turonian. So, that ID is still a good possibility. I had just read a paper saying it was most commonly found in France in the Turonian age deposits. Ptychodus decurrens has up to 12 transverse crown ridges on a lower profile crown. At the margin, the ridges bifurcate and branch into numerous finer anastomosing ridges that extend to the edge of the crown. Your tooth appears to have those features and it is found in Europe. No other Ptychodus of Cenomanian age have those features. 1 Link to comment Share on other sites More sharing options...
Manticocerasman Posted June 24, 2020 Author Share Posted June 24, 2020 2 hours ago, LSCHNELLE said: Ptychodus decurrens does first occur in the middle Cenomanian extending through the middle Turonian. So, that ID is still a good possibility. I had just read a paper saying it was most commonly found in France in the Turonian age deposits. Ptychodus decurrens has up to 12 transverse crown ridges on a lower profile crown. At the margin, the ridges bifurcate and branch into numerous finer anastomosing ridges that extend to the edge of the crown. Your tooth appears to have those features and it is found in Europe. No other Ptychodus of Cenomanian age have those features. Thx for the info it helps a lot , althought the mention "commonly found in France" those teeth are found from time to time, but they are extremely rare. but mabey other sites in france yield them more frequently. growing old is mandatory but growing up is optional. Link to comment Share on other sites More sharing options...
Ludwigia Posted June 24, 2020 Share Posted June 24, 2020 Lovely Ptycodus tooth! @fossilnut The belemnite rostrum is preserved in calcite. 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
LSCHNELLE Posted June 24, 2020 Share Posted June 24, 2020 It is an extremely rare and beautiful find! I was just trying to say they might be more common in the Turonian. Not easy to find. 1 Link to comment Share on other sites More sharing options...
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