DatFossilBoy Posted January 16, 2019 Share Posted January 16, 2019 Hello guys! I saw these shark teeth from Ryazan, Russia. The first 6 ( you can put numbers to the teeth according to the order of the pictures ) are identified as Archeolamna. The second 4 are identified as Cretalamna. I am very sure some are not IDed correctly, some swapped btw Cretalamna and Archeolamna and some are completely different species. I really appreciate the help, and if someone could tell me the complete specie name from that location, that would be awesome. Kind regards. Ps : tell me if you need extra pics of the back of the teeth if needed. Link to comment Share on other sites More sharing options...
DatFossilBoy Posted January 16, 2019 Author Share Posted January 16, 2019 Second 4 Link to comment Share on other sites More sharing options...
Darktooth Posted January 16, 2019 Share Posted January 16, 2019 In the first set of pics #2 and#4 look like Archeolamna and #5 looks like Cretalamna to me. They look just like what is found in the Cretaceous streams of New Jersery. The rest of the teeth, while they look similar, I myself am not confident enough to say what they are for sure. 1 I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
Darktooth Posted January 16, 2019 Share Posted January 16, 2019 Here are my Archeolamna for comparison. 1 I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
Darktooth Posted January 16, 2019 Share Posted January 16, 2019 Here are my Cretalamna for comparison. 4 I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
FossilsAnonymous Posted January 16, 2019 Share Posted January 16, 2019 Beautiful teeth either way! On The Hunt For The Trophy Otodus! Link to comment Share on other sites More sharing options...
Darktooth Posted January 16, 2019 Share Posted January 16, 2019 I would like to mention that my Cretalamna are Cretalamna appendiculata and all the ones shown are upper teeth I traded or gave away all my lowers. The bottom tooth in the right corner is the only one I found at Douglas Point Maryland. I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
DatFossilBoy Posted January 16, 2019 Author Share Posted January 16, 2019 6 hours ago, Darktooth said: Here are my Cretalamna for comparison. Thank you! Very helpful. Sooo I think If I am not mistaken, number 5 of the first batch and number 3 and 4 of the second batch are Cretalamna, the rest are Archeolamna. However I think I might be missing some Cretalamna but not sure... What do you think? Kind regards. Link to comment Share on other sites More sharing options...
Archie Posted January 16, 2019 Share Posted January 16, 2019 These are really nice! Lovely colors. Link to comment Share on other sites More sharing options...
Darktooth Posted January 17, 2019 Share Posted January 17, 2019 6 hours ago, DatFossilBoy said: Thank you! Very helpful. Sooo I think If I am not mistaken, number 5 of the first batch and number 3 and 4 of the second batch are Cretalamna, the rest are Archeolamna. However I think I might be missing some Cretalamna but not sure... What do you think? Kind regards. I think the teeth that you mentioned, are indeed, Cretalamna. I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
non-remanié Posted January 17, 2019 Share Posted January 17, 2019 In the first group, #5 is Cretalamna. In the 2nd group #1 is Archaeolamna. Everything else is likely correct. ---Wie Wasser schleift den Stein, wir steigen und fallen--- Link to comment Share on other sites More sharing options...
The Jersey Devil Posted January 17, 2019 Share Posted January 17, 2019 8 hours ago, Darktooth said: I would like to mention that my Cretalamna are Cretalamna appendiculata and all the ones shown are upper teeth I traded or gave away all my lowers. The bottom tooth in the right corner is the only one I found at Douglas Point Maryland. Hey Dave, I was going to say, that one on the lower right definitely doesn’t match any NJ Cretalamnas I’ve seen. The preservation and especially the very deep basal margin are like the Paleocene Maryland ones. “You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.” ― Mikhail Tal Link to comment Share on other sites More sharing options...
Anomotodon Posted January 17, 2019 Share Posted January 17, 2019 Archaeolamna ex. gr. kopingensis - 1,2,3,4,6 in the first post and 1 in the second post Cretolamna catoxodon - all others There were no Cretalamna appendiculata in both Cenomanian of Russia and Campanian of New Jersey, C. appendiculata is a Turonian species, by the way The Tooth Fairy Link to comment Share on other sites More sharing options...
Darktooth Posted January 18, 2019 Share Posted January 18, 2019 On 1/17/2019 at 12:21 PM, Anomotodon said: Archaeolamna ex. gr. kopingensis - 1,2,3,4,6 in the first post and 1 in the second post Cretolamna catoxodon - all others There were no Cretalamna appendiculata in both Cenomanian of Russia and Campanian of New Jersey, C. appendiculata is a Turonian species, by the way Where did you get your information that Cretalamna appendiculata did not occur in New Jersey. There are multiple New Jersey fossil identification websites that call these teeth Cretalamna appendiculata as assigned by Agassiz 1843. I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
Anomotodon Posted January 18, 2019 Share Posted January 18, 2019 54 minutes ago, Darktooth said: Where did you get your information that Cretalamna appendiculata did not occur in New Jersey. There are multiple New Jersey fossil identification websites that call these teeth Cretalamna appendiculata as assigned by Agassiz 1843. That is outdated information since C. appendiculata is constantly used as a wastebasket taxon for different tooth morphologies ranging Albian to Eocene. Siversson et al., 2015 attempted to break up this species into multiple, and C. appendiculata (based on Aggasiz specimens) is now strictly a rare Cenomanian - Turonian species. Campanian teeth from NJ are either C. borealis or C. sarcoportheta. https://www.app.pan.pl/article/item/app20120137.html 1 The Tooth Fairy Link to comment Share on other sites More sharing options...
Darktooth Posted January 18, 2019 Share Posted January 18, 2019 13 minutes ago, Anomotodon said: That is outdated information since C. appendiculata is constantly used as a wastebasket taxon for different tooth morphologies ranging Albian to Eocene. Siversson et al., 2015 attempted to break up this species into multiple, and C. appendiculata (based on Aggasiz specimens) is now strictly a rare Cenomanian - Turonian species. Campanian teeth from NJ are either C. borealis or C. sarcoportheta. https://www.app.pan.pl/article/item/app20120137.html Thank-you for the information. I wasn't aware of this. I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
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