JBMugu Posted May 24, 2018 Share Posted May 24, 2018 Hi everybody, I found this small tooth, I thought it looked like an interesting Squalus but then I looked on Elasmo and didnt see anything like it. What do you think? Location: round mountain silt, bakersfield CA. The scale is in 10ths of an inch Link to comment Share on other sites More sharing options...
Troodon Posted May 24, 2018 Share Posted May 24, 2018 Looks like a pathologic Squalus. Very cool nice find Link to comment Share on other sites More sharing options...
Nimravis Posted May 24, 2018 Share Posted May 24, 2018 @caldigger Link to comment Share on other sites More sharing options...
ynot Posted May 24, 2018 Share Posted May 24, 2018 + 1 for pathologic Squalis. +3 for a nice find! Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted May 24, 2018 Share Posted May 24, 2018 Really nice and different looking tooth. Nice find. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Miocene_Mason Posted May 24, 2018 Share Posted May 24, 2018 Very cool! Pathos are always a fun thing to find, though probably not for the shark to have in the mouth. “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
Darktooth Posted May 24, 2018 Share Posted May 24, 2018 That's a very cool looking tooth! I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
caldigger Posted May 24, 2018 Share Posted May 24, 2018 Hey Jesse, are you guys pulling a lot of unusual finds from that "strip mine" of yours? Wish we could pull some if that overburden off some of the other hills. Ha! Link to comment Share on other sites More sharing options...
Jazfossilator Posted May 24, 2018 Share Posted May 24, 2018 Very nice tooth Link to comment Share on other sites More sharing options...
old bones Posted May 24, 2018 Share Posted May 24, 2018 That is a very cool tooth! Link to comment Share on other sites More sharing options...
GeschWhat Posted May 24, 2018 Share Posted May 24, 2018 Super cool tooth! Lori www.areallycrappystory.com/fossils www.facebook.com/fossilpoo Link to comment Share on other sites More sharing options...
Coco Posted May 25, 2018 Share Posted May 25, 2018 @MarcoSr Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
MarcoSr Posted May 25, 2018 Share Posted May 25, 2018 5 hours ago, Coco said: @MarcoSr Coco Based upon the labial flange and root shown in the below picture from the post, the serrations, and other tooth features, the tooth looks like a Squalus to me. The tooth looks like it was formed from a pathology which combined two teeth in the symphysis, the first tooth from the right side and the first tooth from the left side of the dentition which is why the two crowns point in opposite directions. Squalus do not normally have a symphysial tooth like this tooth that is why it is from a pathology. Marco Sr. 5 "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...
siteseer Posted May 25, 2018 Share Posted May 25, 2018 Hi Marco Sr., I was wondering if this is actually an example of filesplitting. I have a tooth like it also from the STH Bonebed. Jess Link to comment Share on other sites More sharing options...
MarcoSr Posted May 25, 2018 Share Posted May 25, 2018 (edited) 1 hour ago, siteseer said: Hi Marco Sr., I was wondering if this is actually an example of filesplitting. I have a tooth like it also from the STH Bonebed. Jess Jess That is an interesting possibility. I really don't know if Squalus add tooth files as they grow or if only the tooth size increases as they grow or if both happen. I do know that a number of shark genera do add tooth files as they grow but I never really thought about how that happened. If this tooth is an example of file splitting it is happening in the symphysis of the jaw because the two crowns point in opposite directions (See the illustration and the teeth circled in red). Yet the tooth looks more like a composite of two very distal teeth (see the STH tooth below and the tooth circled in blue in the illustration) because the specimen in this post is elongated instead of two teeth in the symphysis although the two crowns of the specimen in this post are more erect like more medial teeth. I've seen and have a good number of examples of filesplitting in ray teeth both fossil and extant. If this is filesplitting it would be the first example that I've seen in fossil or extant shark teeth. Upper and lower teeth of a spiny dogfish. Illustration courtesy Bigelow & Schroeder (1948) FWNA STH distal tooth: Marco Sr. Edited May 25, 2018 by MarcoSr added picture and reference 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...
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