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ID Help- few Ammonites from Del Rio Formation, Texas Cretaceous


JamieLynn

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Howdy!  A few ammonites that are eluding me as to ID. Anyone with more knowledge of them, I would appreciate some confirmation or negation of my attempts! @erose @JohnJ @Uncle Siphuncle

From Waco Pit Del Rio Formation.

Thanks!! 

Possibly Tetragonites brazoensis? Or Adkinsia ?

2131022731_KTXAMM057AmmoniteDWaco(1).thumb.jpg.7e7717ce85accb59c9d49ddf691f7854.jpg

 

305520536_KTXAMM057AmmoniteDWaco(2).thumb.jpg.2a2eb472bdf8d37c8b9d894dd2464ff0.jpg

 

Second one

Mantelliceras wacoense? Or maybe Paracycloceras?


 1648496335_KTXAMM058AmmoniteEWaco(1).thumb.jpg.1e408101a40e6c87e7bb8b90b08b8c4b.jpg

1573033915_KTXAMM058AmmoniteEWaco(2).thumb.jpg.4b0e5e7bd9f4c3d33e7175ef7cee0fad.jpg

 

Not a great pic, but a little bit of a close up on the suture of this one:

No description available.

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  • JamieLynn changed the title to ID Help- few Ammonites from Del Rio Formation, Texas Cretaceous

I don't have my ammonite books in front of me but I can send you a paper by Mancini, 1977 and a faunal list I transcribed from it.  It is a list of known species from the formation.  Still a lot of species to choose from but helpful none the less.

 

And those are nice specimens. Did you take these pics with the new camera scope?

 

1916751617_mancini19771.pdf Grayson Fauna.pdf

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7 hours ago, JamieLynn said:

@erose Thanks, I'll look over those. And yeah, with my new micro camera. 

So Waco PIt is Grayson? I thought it was Del Rio. 

Same thing for this purpose.

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See Geolex. Del Rio is roughly equivalent to the Grayson in whole or part. The name Grayson came about after some workers thought the Del Rio name was abandoned.
 

https://ngmdb.usgs.gov/Geolex/UnitRefs/DelRioRefs_7889.html

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My goal is to leave no stone or fossil unturned.   

See my Arizona Paleontology Guide    link  The best single resource for Arizona paleontology anywhere.       

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thanks y'all...looks like i have some reading ahead of me. Perhaps I can load them on my kindle and read them at the beach....just a little light reading! hahahah!! I wish I were going to the beach.....

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...but, you do have one of prettiest rivers in Texas!

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The human mind has the ability to believe anything is true.  -  JJ

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