Gastropod Id

[Ashelyford]

Was digging around looking for snakes is west texas (Odessa) and found many of these large gastropods will only let me load one photo this site on mobile is hard to figure out

[Fossildude19]

@JohnJ  @Uncle Siphuncle  @erose  @grandpa @BobWill

[DPS Ammonite]

Take photos of one or two fossils at a time. Take multiple views of each including the aperature. 
 

Some  look similar to Cretaceous Tylostoma. See shells circled in red.

http://northtexasfossils.com/

[JamieLynn]

Agreeing with DPS...take pics one at a time or at least laid out in an array with numbers attached. I see a variety of Tylostomas and possibly a Gyrodes or two. 

[Uncle Siphuncle]

I also recognized design cues of Tylostoma on a few of those specimens.  Have you made time yet to ascertain geologic formation you hunted by viewing a geomap?

[grandpa]

Here's an interactive geomap site for Texas:  https://txpub.usgs.gov/txgeology/

 

I agree with the inputs above that the fossils need to be separated out and more picts taken at different angles.  I think I'm seeing multiple species in the group pict.

 

Using the link above, the closest Cretaceous formations I saw were Trinity Group Antlers Sand and Fredericksburg Group.  They lie next to each and each is a thin exposure, so it might be difficult to determine which layer you found them in. 

[Creek - Don]