Post Oak Creek, TX (Matrix) - Lots of Oddities!

[JamieLynn]

Hello all! I got some fun Post Oak Creek Matrix and am finding all kinds of odd things!! I am not too familiar with the stuff that comes out of POC aside from the shark teeth and crabby stuff (found a couple of nice claws!) so these things have me wondering what they are! Any help is appreciated! 

 

1.First is this little thing:  4 mm

 

2. Then this weird thing 6 mm  (the backside makes me think denticle but the front.....I don't know) 

 

3. Have found quite a few of these - .I think they are some kind of dermal plates?  All are aprox 3 mm

 

4. Another type of dermal plate?   4 mm

 

5. Perhaps a worn fragment of a vertebra?   4 mm  But it is not the same color or texture as any of the other verts I've found in the matrix;

 

6 An odd bone bit. It has a concave circle on the small end. Perhaps a tail vert?  5 mm

 

7. Is this perhaps a plesiosar tooth fragment? 4 mm

 

8. And finally, not sure what tooth this might be. It's curved, but not rounded.  It has ridges unlike a shark tooth blade, but is flat like a shark tooth blade. 6mm

 

 

 

[PrehistoricWonders]

42 minutes ago, JamieLynn said:

 

8. And finally, not sure what tooth this might be. It's curved, but not rounded.  It has ridges unlike a shark tooth blade, but is flat like a shark tooth blade. 6mm

 

I think your last is an enchodus tooth.

[JamieLynn]

@Familyroadtrip - that makes sense! Thank you! 

[Al Dente]

1 hour ago, JamieLynn said:

1.First is this little thing:  4 mm

This is a shark tooth with the main blade broken off and parts of the root broken.

[MarcoSr]

 

1. Damaged shark tooth.  You can see two damaged/worn cusplets and the damaged crown in this picture.  The other picture shows the tooth root with a prominent nutrient groove.

 

Marco Sr.

[Al Dente]

1 hour ago, JamieLynn said:

2. Then this weird thing 6 mm  (the backside makes me think denticle but the front.....I don't know) 

This looks like a group of fecal pellets.

[JamieLynn]

@Al Dente  and @MarcoSr - thanks for the ID on number one...i see it now! 

 

On the "fecal pellet"...the backside is so different from the front....that is what is confusing.

[ThePhysicist]

2. ptychodus tip

3. probably some denticle or other

4. looks like rough enamel, mammal?

5. could be vert, not enough to id

6. could be a bit of crustacean or a fish tooth?

7. probably fish tooth...looks more like that enchodus than plesiosaur

 

[JamieLynn]

@ThePhysicist - ahhhhh  thank you! Now I see 2 as Ptychodus!  It's more "bubbly" looking than what i have seen but I found a few images that are similar and the backside is definitely similar to pics here on the FF. 

 

looks similar to first one

[Darbi]

@JamieLynn, I think #4 is a bony fish scale. Possibly Lepisosteiformes. 

[JamieLynn]

@Darbi - thank you! 

[GPayton]

I would agree with the final picture being an Enchodus tooth with the tip broken off, as others have already said. The third set of pictures are definitely osteoderms - the second picture in the set is an alligator scute, but whether it is fossilized I do not know. It looks similar to some of the Pleistocene material that lies above the Cretaceous deposits that hold the shark teeth. 

The third picture in the third set appears to be either a Holmesina or glyptodont osteoderm. If it is glyptodont, it is severely worn, which is why only the raised area in the middle is preserved.

Congrats on the good finds! 

[JohnJ]

1 hour ago, Wendigo1014 said:

the second picture in the set is an alligator scute, but whether it is fossilized I do not know. It looks similar to some of the Pleistocene material that lies above the Cretaceous deposits that hold the shark teeth. 

The third picture in the third set appears to be either a Holmesina or glyptodont osteoderm. If it is glyptodont, it is severely worn, which is why only the raised area in the middle is preserved.

Respectfully, I think the 3 - 4 mm sizes likely exclude the larger animals you suggest.