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Marine Petrosal, Vertebra, partial jaw


Shellseeker

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Shellseeker



Gorgeous day.  Sunshine through 1 pm, then Thunderstorms developed with rumbles and winds that cooled me kayaking back to my truck.  Not a drop.

This is my favorite location, MioPliocene with lots of variety: GWs,  Clams and corals,  mammal and fish jaws without teeth, No time to discuss it all, but enough to get photos and ask for help on three.

1st up a tiny (because it is the smallest I have found) Petrosal. I am thinking river dolphin based on size, but It is different that those I thought were river dolphin.. IMG_2871ce.thumb.jpg.c54c42ef682a0aec5c66710f193c34dd.jpgIMG_2870ce.thumb.jpg.308fb49347ea351e6552fdeb718642b7.jpgIMG_2874text.thumb.jpg.342e0bb792c4d76555d0c6037e412320.jpg

 

Any time I seek an ID ,  I always search the Internet for a matching image.. On my 1st page of images, this one pops up... Take a look at A1 and compare it to my find today... REALLY close .. Only issue is that mine is half the size of these that come from Globicephaline Whales from the Mio-Pliocene Purisima Formation of Central California, USA.  For the uninitiated ,  Globicephaline is another name for Pilot Whale.  How can mine be so small and come from a whale? @Boesse

f05_113.thumb.jpg.7dd8669133a575a0281791e563a498e3.jpg

 

Next is a small section of a Fish Jaw.... Two rows... One large, one tiny running parrallel.  Is Aligator Gar the ONLY Florida fossil fish that has this characteristic ?

IMG_2886ce.thumb.jpg.97485a6dc50bd1d726d11e41c6105bce.jpgIMG_2883ce.thumb.jpg.0a531eef3322ff9a44f0842fe79cb6d7.jpgIMG_2887ce.thumb.jpg.1998212e4d68dbb7331bb4e80d546def.jpg

 

Finally, the Fish or Shark Vert.... 

 

IMG_2876ce.thumb.jpg.520b09f02cae5a10be2a407d25ff4442.jpgIMG_2877ce.thumb.jpg.a071025125428e6966244d53e9d13c15.jpgIMG_2880text.thumb.jpg.b2f5034203921a0983aa902c02cd3526.jpg

 

This seems similar to the Tiger shark Vert I found back in 2018....but not sure.. Very rare find for me...

IMG_2886ce.jpg

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11 hours ago, Shellseeker said:

Is Aligator Gar the ONLY ...     ...fossil fish that has this characteristic ?

 

I first thought of your specimen's similarities to Amiid jaw sections that I have found in Cretaceous deposits. Might be a worthwhile comparison with Bowfin jaws.

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12 hours ago, Shellseeker said:

Finally, the Fish or Shark Vert.... 

 

Looks like a shark centrum.

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Shellseeker
1 hour ago, Al Dente said:

 

Looks like a shark centrum.

Thank you.   I find very few Shark Vertebra of any species,  maybe 1 every 2 or 3 years.  This is a very rare find for me. 

4 years back, in a different location, I found what I now believe to be a Galeocerdo cuvier Vertebra.  It was discussed in this thread. 

http://www.thefossilforum.com/topic/99225-sawfish-vert/

VertCrop.JPG

I certainly have no clue of what genus this Vertebra might be, but looking at them side by side,  I am pretty comfortable that it is not G. cuvier..  Thus a new species and genus for my shark collection.

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Shellseeker
6 hours ago, PFOOLEY said:

 

I first thought of your specimen's similarities to Amiid jaw sections that I have found in Cretaceous deposits. Might be a worthwhile comparison with Bowfin jaws.

Thanks to you,  I will check it out and comment back on whatever I find... The fossil record traces the existence of gars like the Alligator gar back to the Early Cretaceous over 100 million years ago. There is no Cretaceous in my part of Florida (unfortunately) but lots of Gar fish and their ancestors.

 

Here is a photo of a modern (I think) Gar Fish jaw that I copied from @darrow.IMG_7056darrow.jpg.693d1b6647d9c1886f635cb9b4bf64d5.jpg

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hemipristis
3 hours ago, PFOOLEY said:

Here is a modern Bowfin skull...

 

amia2edited-2l2fcah.jpg?format=2500w&content-type=image%2Fjpeg

 

...image from Western Science Center.

Nasty looking set of teeth!

 

 

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hemipristis
9 hours ago, PFOOLEY said:

 

I first thought of your specimen's similarities to Amiid jaw sections that I have found in Cretaceous deposits. Might be a worthwhile comparison with Bowfin jaws.

I have a Pliocene-Pleistocene bowfin mandible, and while I don’t have the s pop ecumenical handy, if memory serves, it isn’t as robust as the specimen in question. I could be wrong though.

 

My vote is gar

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Shellseeker

I keep searching and found this picture,  associated with one of @Boesse blogs:   images.jpg.dae1de00387bb939039586d28ff5021e.jpg

That's a pretty close approximation to my G. cuvier Vertebra above....

 

and here are supposedly some Worthpoint pictures of associated Hemipristis verts from Lee Creek.. It seemed that 10 years ago someone found a complete fossil skeleton of a fossilized Hemipristis Serra with move than 150 Vertebrate .. Does anyone know what happened to that find?   Museum ?  Research paper?

.319297041_1_5a8b64615354c7a12da28bc095b383b6(3).jpg.0dcfb21ee3823bce1254ef1621c5faf3.jpg1_5a8b64615354c7a12da28bc095b383b6.jpg.f72c1148d3b6ee15675358c7d4add443.jpg

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