eannis6 Posted March 28, 2018 Share Posted March 28, 2018 Hello all, I found this tooth at Brownie’s Beach last year, is this a fossil common thresher? Thanks! Link to comment Share on other sites More sharing options...
Miocene_Mason Posted March 28, 2018 Share Posted March 28, 2018 Looks strikingly similar to one @Fossil-Hound found. A juvenile giant thresher maybe? 1 “...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...
eannis6 Posted March 28, 2018 Author Share Posted March 28, 2018 25 minutes ago, WhodamanHD said: Looks strikingly similar to one @Fossil-Hound found. A juvenile giant thresher maybe? I traded this and other teeth to Fossil hound for a trilobite!!! Link to comment Share on other sites More sharing options...
SailingAlongToo Posted March 28, 2018 Share Posted March 28, 2018 @eannis6 You might consider putting some type of scale in your photos to give the viewers perspective. Ruler, tape measure, etc. Just a suggestion. 1 Don't know much about history Don't know much biology Don't know much about science books......... Sam Cooke - (What A) Wonderful World Link to comment Share on other sites More sharing options...
non-remanié Posted March 28, 2018 Share Posted March 28, 2018 It is definitely an Alopias species, but not a giant thresher. 1 ---Wie Wasser schleift den Stein, wir steigen und fallen--- Link to comment Share on other sites More sharing options...
Miocene_Mason Posted March 28, 2018 Share Posted March 28, 2018 1 hour ago, eannis6 said: I traded this and other teeth to Fossil hound for a trilobite!!! Well then, very similar 1 “...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...
Troodon Posted March 28, 2018 Share Posted March 28, 2018 From elasmo.com 1 Link to comment Share on other sites More sharing options...
eannis6 Posted March 28, 2018 Author Share Posted March 28, 2018 56 minutes ago, SailingAlongToo said: @eannis6 You might consider putting some type of scale in your photos to give the viewers perspective. Ruler, tape measure, etc. Just a suggestion. I normally do, but the tooth is no longer in my possession, it’s about .5 inch long though, maybe a bit under. Link to comment Share on other sites More sharing options...
eannis6 Posted March 28, 2018 Author Share Posted March 28, 2018 Thanks for the help everyone! Link to comment Share on other sites More sharing options...
sixgill pete Posted March 30, 2018 Share Posted March 30, 2018 @eannis6 @Fossil Hound I would like to see a side view of this tooth. I am wondering if this could be a worn Physogaleus contortus. The bend of the main blade does not say Alopias to me. @MarcoSr @Al Dente @siteseer No matter what it is, it is very hard to I.D. any tooth with only a lingual view. 1 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...
MarcoSr Posted March 31, 2018 Share Posted March 31, 2018 I agree with Steve that the tooth is "definitely an Alopias species, but not a giant thresher". The tooth looks like it could be an Alopias superciliosus or an Alopias latidens (fossil species name)/Alopias vulpinus (extant species name). Check out the below extant Alopias superciliosus dentition from J-elasmo. Alopias superciliosus teeth can have a prominent nutrient groove as shown below but the groove becomes less obvious as the shark grows. Because of root wear on the posted tooth it is difficult to tell if the posted tooth may have had a nutrient groove. Marco Sr. 3 "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...
sixgill pete Posted March 31, 2018 Share Posted March 31, 2018 Thanks for posting that dentition @MarcoSr it definitely changes my opinion on this tooth. 1 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...
eannis6 Posted April 1, 2018 Author Share Posted April 1, 2018 On 3/31/2018 at 8:02 AM, MarcoSr said: I agree with Steve that the tooth is "definitely an Alopias species, but not a giant thresher". The tooth looks like it could be an Alopias superciliosus or an Alopias latidens (fossil species name)/Alopias vulpinus (extant species name). Check out the below extant Alopias superciliosus dentition from J-elasmo. Alopias superciliosus teeth can have a prominent nutrient groove as shown below but the groove becomes less obvious as the shark grows. Because of root wear on the posted tooth it is difficult to tell if the posted tooth may have had a nutrient groove. Marco Sr. Thanks for the help, I have a better understanding of the tooth type now!!!! Link to comment Share on other sites More sharing options...
eannis6 Posted April 1, 2018 Author Share Posted April 1, 2018 On 3/30/2018 at 6:52 PM, sixgill pete said: @eannis6 @Fossil Hound I would like to see a side view of this tooth. I am wondering if this could be a worn Physogaleus contortus. The bend of the main blade does not say Alopias to me. @MarcoSr @Al Dente @siteseer No matter what it is, it is very hard to I.D. any tooth with only a lingual view. Thanks for the help Sixgill!!!! Link to comment Share on other sites More sharing options...
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