Ammonites or Pareidolia: ID help

[Praefectus]

Hello. A friend of mine was out collecting near Cibolo Creek in Texas and he thinks he found some nautiloids. I'm not sure about that identification. Can I get some opinions on if these are fossils or rocks. Thanks very much. 

 

[Praefectus]

[LabRatKing]

The white rock in the last photo looks to be something to me. As for the others, I don't see fossils, however someone more familiar with this location will know better.

 

I bet @Uncle Siphuncle could give us some insights if I remember properly.

[grandpa]

Not seeing any ammonites.  Last pair may be ichnofossils.

[Jeffrey P]

I'm not seeing any cephalopods there. 

[Ludwigia]

ditto. At the very most, the one in the 4th photo may be a partial negative of a ribless one.

[Top Trilo]

You could always paint the part of the first one, it kinda has a eurypterid shape

[Uncle Siphuncle]

5 hours ago, LabRatKing said:

The white rock in the last photo looks to be something to me. As for the others, I don't see fossils, however someone more familiar with this location will know better.

 

I bet @Uncle Siphuncle could give us some insights if I remember properly.

Thanks for the heads up, LRK, but oy!  These are some hard specimens to align with known organic origins.  I'm not seeing diagnostic features of fossils. 

 

Also, Cibolo Creek may be 100 miles long, incising many formations from Lower Cretaceous thru Pleistocene, so in this case knowing the waterway alone doesn't help narrow things down to the formation level without further provenance, probably best communicated via PM, if the OP is interested.

[Praefectus]

Thanks for the input everyone. 

[Praefectus]

17 hours ago, Uncle Siphuncle said:

Thanks for the heads up, LRK, but oy!  These are some hard specimens to align with known organic origins.  I'm not seeing diagnostic features of fossils. 

 

Also, Cibolo Creek may be 100 miles long, incising many formations from Lower Cretaceous thru Pleistocene, so in this case knowing the waterway alone doesn't help narrow things down to the formation level without further provenance, probably best communicated via PM, if the OP is interested.

Thanks for the offer. I'm not sure where exactly my friend was looking. I'll send him a message and let him you know you offered to help. 

[Coldwater_fossil_hound]

17 hours ago, Uncle Siphuncle said:

Thanks for the heads up, LRK, but oy!  These are some hard specimens to align with known organic origins.  I'm not seeing diagnostic features of fossils. 

 

Also, Cibolo Creek may be 100 miles long, incising many formations from Lower Cretaceous thru Pleistocene, so in this case knowing the waterway alone doesn't help narrow things down to the formation level without further provenance, probably best communicated via PM, if the OP is interested.

Um. - i found these rocks lol, and what is “OP” (Original - .. ) yeah I am not sure what OP means but i did share these with my freind to post on here so am i person in question? when you say OP?

62975634799__428FF1B0-903A-458B-BCA0-AB03A85288FA.MOV

[JohnJ]

1 hour ago, Coldwater_fossil_hound said:

Um. - i found these rocks lol, and what is “OP” (Original - .. ) yeah I am not sure what OP means but i did share these with my freind to post on here so am i person in question? when you say OP?

62975634799__428FF1B0-903A-458B-BCA0-AB03A85288FA.MOV

 

Easy, pilgrim...OP =  original poster.  @Praefectus

[Coldwater_fossil_hound]

Thats me lol. 

[JohnJ]

Just now, Coldwater_fossil_hound said:

Thats me lol. 

 

@Praefectus posted them with your permission, but no one here knew that was you until a few minutes ago...all is good.  

[Praefectus]

Hello. Yes, @Coldwater_fossil_hound found these. Thanks for the help everyone.