Shellseeker Posted February 29 Share Posted February 29 A great day in the sunshine. Few finds but all interesting... Abertella dengleri echinoid, @Sacha Transformed to Silica, I am hopeful of finding a whole one.. Pachyarmatherium leiseyi... these are rare and Tiny, found my 1st one in 2014. Pristis lathami Rostral tooth... A Tortoise footpad, more likely than Glyptodon tail osteoderm A piece of pretty Bark Ivory A Steinkern... of a Gastropod that I do not know the name... The silicified core of a different gastropod.... Really a fun day... finding many favorites... AND An unknown Caudal Vertebra to identify. This should be identifiable.. How many of the Peace River fauna have tail vertebrae this wide. I believe it not to be Marine Mammal, .. I am hopeful another TFF member Identifies this before I track it down in a more difficult way... 8 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Balance Posted February 29 Share Posted February 29 Glad you made it out , Jack! Weather today was amazing for hunting. 1 Link to comment Share on other sites More sharing options...
Shellseeker Posted March 1 Author Share Posted March 1 On 2/28/2024 at 9:14 PM, Shellseeker said: An unknown Caudal Vertebra to identify. This should be identifiable.. How many of the Peace River fauna have tail vertebrae this wide. I believe it not to be Marine Mammal, .. I am hopeful another TFF member Identifies this before I track it down in a more difficult way... Started to wonder, can this be the Axis vertebra of a dolphin ? I am drawn to those articulation platforms. These below from Calvert Cliffs. @shark57 @Al Dente The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
shark57 Posted March 1 Share Posted March 1 (edited) I don't think it's a dolphin axis. As shown in the upper right of your Calvert Cliffs pic, a cetacean axis has a significant protruding knob for insertion into the atlas. I don't see that in your specimen. This does look more like a cervical than a caudal to me, just not an axis. Would be easier to tell if some of the processes were preserved. Edited March 1 by shark57 Corrected atlas to axis Link to comment Share on other sites More sharing options...
Shellseeker Posted March 1 Author Share Posted March 1 6 hours ago, shark57 said: I don't think it's a dolphin atlas. As shown in the upper right of your Calvert Cliffs pic, a cetacean atlas has a significant protruding knob for insertion into the atlas. I don't see that in your specimen. This does look more like a cervical than a caudal to me, just not an axis. Would be easier to tell if some of the processes were preserved. Thanks for the response. I noted the minimal protuberance and wanted a member more familiar with cetacean verts to evaluate. I also moved from caudal to cervical, and I was considering the Peace River fauna that might have a Vertebra centrum in the range of 60 mm wide. There are likely others to investigate. I will also attempt to locate closeup photos of Dolphin cervical vertebra, not the Axis. The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Shellseeker Posted March 1 Author Share Posted March 1 Found some pictures of Dolphin Cervical Verts, The Axis below has robust superior articular surfaces, but the remainder of the cervical vertebra do not. The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Harry Pristis Posted March 1 Share Posted March 1 For comparison: 2 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
Shellseeker Posted March 2 Author Share Posted March 2 6 hours ago, Harry Pristis said: For comparison: Harry, The Centrum on my find is L 37 x W 60 x H 29. It seems in hand small for whale, However I accept that your L 9 x W 34 x H 26.8 mm is a whale cervical. My problem with this one is more shape than size... it has a short broken "dens" but large "Superior Articular surfaces"... I would love to fit it to dolphin or whale because that was my initial thought, but the combination does not seem to match the marine mammal cervical vertebra.. Meanwhile , when I have time, I search felids and canids, alligator... and even sloths Look at that Axis Vert... LARGE articular processes and a much smaller "Dens"... Could it be Armadillo or another Xenarthran... It is like an itch I can not scratch.... Jack The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Shellseeker Posted March 4 Author Share Posted March 4 Always good to keep on working Identifications. Saturday night sitting across a FPS board member, I pulled out the vert and he unconditionally Identified as Dugong Axis Vert. Did a search this morning and found this on a UK dealer website: Almost the exact size.. Likely a juvenile, I am unsure how large an Adult Axis Vert can be... I thought that the Articular facets would would be a determining feature. My Find labeled Metaxytherium floridanum 1 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Harry Pristis Posted March 4 Share Posted March 4 46 minutes ago, Shellseeker said: Saturday night sitting across a FPS board member . . . That was mighty sociable, Jack. 1 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
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