Two Fish or Mosasaur Vertebrae?

[Caaaleb]

Hello,

Earlier today I found these two Fossil vertebra which I suspect are either Fish or Mosasaur or Plesiosaur, in a small gravel bank near some Texigryphaea. These are also my first fossil vertebrae. I found these two in the East Fork Trinity River in North Texas. And the two vertebra were right next to each other, probably two or three inches away from each other. I then looked later on the USGS Geological Survey and found that the Elm Fork Trinity River has holocene-era rocks, so then that rules out Mosasaur I guess? I looked online to see Mosasaur and fish verebrae to see if I could compare my finds with them, and the smaller vertebra has the same bone pattern things or veins that some of the other vertebra online had. I must say, they look more bone-like in person.

But does anyone know the species or classification of these vertebrae?

Any help is appreciated

 

 

 

[Lone Hunter]

In the first picture it looks like the center is crystalized?  Reminds me of chunks of shell I find in DFW creeks. The other one looks like a rock to me but I'm horrible with looking at pictures for bone ID. 

[DPS Ammonite]

See if the rock in the top seven photos fizzes in HCl acid. It looks like prismatic calcite found in the giant Cretaceous inoceramid bivalves that occur in abundance in north Texas.

 

http://www.thefossilforum.com/index.php?/topic/98905-creek-bed-round-thing/&do=findComment&comment=1097350

 

Edited March 4, 2022 by DPS Ammonite

[facehugger]

apologies, but I am seeing suggestively shaped rocks here, not fossilized bone

 

 

[jpc]

29 minutes ago, facehugger said:

apologies, but I am seeing suggestively shaped rocks here, not fossilized bone

 

 

I agree

 

[Caaaleb]

Daaaaaang... I really thought I found something this time. Well, thanks for y'all's inputs though! And the more and more I inspected the rocks the less and less they looked like bone.

13 hours ago, DPS Ammonite said:

See if the rock in the top seven photos fizzes in HCl acid. It looks like prismatic calcite found in the giant Cretaceous inoceramid bivalves that occur in abundance in north Texas.

 

http://www.thefossilforum.com/index.php?/topic/98905-creek-bed-round-thing/&do=findComment&comment=1097350

 

I'll look into the prismatic calcite and inoceramid things, thank you