SharkySarah Posted April 3 Share Posted April 3 (edited) I was lucky enough to trade some matrix with another collected from the famous shark tooth hill. I’ve identified them to the best of my ability and would love to show them off and get any feedback. Scale is mm! Thank you in advance! I’ll be more than happy to take different angles! C. planus tooth Charcharhinus sp. tooth Cat shark or hound shark? Galeorhinus sp. Mustelus sp. Squalus occidentalis Edited April 3 by SharkySarah 2 Link to comment Share on other sites More sharing options...
Notidanodon Posted April 3 Share Posted April 3 All correct These are weird,right one looks like triakis, let me get back to you on the left one, do you have more angles? Link to comment Share on other sites More sharing options...
SharkySarah Posted April 3 Author Share Posted April 3 Mylobatis mouth plate Ray teeth (I can’t tell them apart for the life of me) Wondering if E 1 and 2 are male ray teeth? fish teeth? Male ray teeth?? H 1-3 and all of I- basking shark ? J- fish teeth? K and L - basking shark? M to O I have nothing on these 2 Link to comment Share on other sites More sharing options...
SharkySarah Posted April 3 Author Share Posted April 3 Little shark teeth I can’t ID sadly broken shark teeth Dermal denticles Crushing fish teeth - anyone know the genus ? Coprolite? is this cartilage or just some mineral? bones? 2 Link to comment Share on other sites More sharing options...
SharkySarah Posted April 3 Author Share Posted April 3 14 hours ago, Notidanodon said: All correct These are weird,right one looks like triakis, let me get back to you on the left one, do you have more angles? sure thing! left one: tight one: Link to comment Share on other sites More sharing options...
Notidanodon Posted April 3 Share Posted April 3 30 minutes ago, SharkySarah said: sure thing! left one: tight one: I think both are triakis Link to comment Share on other sites More sharing options...
Notidanodon Posted April 3 Share Posted April 3 14 hours ago, SharkySarah said: Mylobatis mouth plate Ray teeth (I can’t tell them apart for the life of me) Wondering if E 1 and 2 are male ray teeth? fish teeth? Male ray teeth?? H 1-3 and all of I- basking shark ? J- fish teeth? K and L - basking shark? M to O I have nothing on these A4 heterotorpedo E1 is an underdeveloped shark tooth F yes apart2 which may be cetacean g squatina and cetorhinus n,o are heterodontus anterior teeth Link to comment Share on other sites More sharing options...
SharkySarah Posted April 3 Author Share Posted April 3 Thanks for all the help @Notidanodonhow do you determine which are Angel and which are basking? I think the circled one is Angel due to its large flat top but I’m not sure. I thought the ones in H were basking for sure but not I’m second guessing it all. Link to comment Share on other sites More sharing options...
TRout Posted April 4 Share Posted April 4 Yes, all of H appear to be basking shark. i1 is a fish tooth and i2 is a shark tooth with broken roots (probably lower carcharhinus). For angel shark teeth, the cusp is usually slender and has a single projection with elongated enamel shoulders and is perpendicular to the basal face of the root, which is wide and concave. Shape of the root is triangualr. Basking shark teeth are small and peg shaped, with a sharp, curved crown with a distinct cutting edge on each side and straight sided roots with 2 small lobes. Some teeth may have small cusplets. Here is your last picture with my ID guesses. Link to comment Share on other sites More sharing options...
TRout Posted April 4 Share Posted April 4 K and L look like fish teeth (except L2 which is the crown of a shark tooth, not sure of the species but not basking shark). M1: broken bit of shark tooth blade M2: broken bit of fish tooth Link to comment Share on other sites More sharing options...
SharkySarah Posted April 4 Author Share Posted April 4 Thank you so much for explaining @TRout! You seem super knowledgeable on shark tooth hill. Do you know if those pieces with craters are cartilage or just minerals? Link to comment Share on other sites More sharing options...
Notidanodon Posted April 4 Share Posted April 4 8 minutes ago, SharkySarah said: Thank you so much for explaining @TRout! You seem super knowledgeable on shark tooth hill. Do you know if those pieces with craters are cartilage or just minerals? Those pieces are worn bone 1 Link to comment Share on other sites More sharing options...
TRout Posted April 4 Share Posted April 4 (edited) Yep, as @Notidanodon said, those are bits of bone. Spongey (cancellous) bone. Also, the other images that are labeled as bone are correct. The image labeled as potential coprolite looks to me like it could be a blob of manganese. I don't have any manganese on its own, but here's a picture of a tooth mostly covered in manganese for comparison: Edited April 4 by TRout 1 Link to comment Share on other sites More sharing options...
Notidanodon Posted April 5 Share Posted April 5 21 hours ago, TRout said: Yep, as @Notidanodon said, those are bits of bone. Spongey (cancellous) bone. Also, the other images that are labeled as bone are correct. The image labeled as potential coprolite looks to me like it could be a blob of manganese. I don't have any manganese on its own, but here's a picture of a tooth mostly covered in manganese for comparison: I would agree but the manganese normally coats something and given the shape it could be a coprolite or shrimp tunnel underneath but impossible to know Link to comment Share on other sites More sharing options...
SharkySarah Posted April 5 Author Share Posted April 5 Thank you all!!! Link to comment Share on other sites More sharing options...
debivort Posted April 5 Share Posted April 5 (edited) A2 is Gymnura (butterfly ray) and A4 is Raja (edit: also B3 and B7 I think). For me the best reference on such teeth is the Batoid section of Elasmo (http://www.elasmo.com/) Edited April 5 by debivort Link to comment Share on other sites More sharing options...
SharkySarah Posted April 5 Author Share Posted April 5 1 hour ago, debivort said: A2 is Gymnura (butterfly ray) and A4 is Raja (edit: also B3 and B7 I think). For me the best reference on such teeth is the Batoid section of Elasmo (http://www.elasmo.com/) Oh my goodness thank you so much for this resource. It is so better than the old PDF I was trying to look at. Looking at this site, I think this is another Raja sp. ? Link to comment Share on other sites More sharing options...
Al Dente Posted April 5 Share Posted April 5 1 minute ago, SharkySarah said: Oh my goodness thank you so much for this resource. It is so better than the old PDF I was trying to look at. Looking at this site, I think this is another Raja sp. ? It is a male Dasyatis type tooth. 1 Link to comment Share on other sites More sharing options...
Al Dente Posted April 5 Share Posted April 5 On your A ray teeth, #1, 2, 6 and 7 look like Mobula. 3 and 5 are Mustelus. 4 looks like Raja. Link to comment Share on other sites More sharing options...
debivort Posted April 5 Share Posted April 5 Go with @Al Dente's ids here. I'm not well dialed in on Mobula. Link to comment Share on other sites More sharing options...
debivort Posted April 5 Share Posted April 5 (edited) I think A3 and A5 are Rhynchobatus (the little tongue-like projection, "medial uvula" is a good feature for that group). I think B1 is Dasyatis. D5 might be Plinthicus Edited April 5 by debivort Link to comment Share on other sites More sharing options...
Al Dente Posted April 5 Share Posted April 5 (edited) 7 hours ago, debivort said: I think A3 and A5 are Rhynchobatus (the little tongue-like projection, "medial uvula" is a good feature for that group). Mustelus have this feature. Here is an example from this site. The uvula in Rhynchobatus is more pronounced and have a pair of lateral ones beside the main one. edit: I was thinking Rhinobatis with the side uvulae. Some Rhynchobatus have hints of side uvulae but others don’t. Edited April 5 by Al Dente 1 Link to comment Share on other sites More sharing options...
debivort Posted April 5 Share Posted April 5 So OP's A3 and A5 are Mustelus, @Al Dente? Link to comment Share on other sites More sharing options...
SharkySarah Posted April 5 Author Share Posted April 5 @Al Dente thanks for pointing that out about Mustelus sp. I think B2 is one as well. Link to comment Share on other sites More sharing options...
SharkySarah Posted April 5 Author Share Posted April 5 Other angles of ray teeth B and D B1 B2. B3. B4. B5. B6. B7. D1. D2. D3. D4. D5. Link to comment Share on other sites More sharing options...
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