Pennsylvanian gastropod ID

[Collector9658]

I've found some nice looking gastropods, although I'm not certain what type. I'd like to hopefully ID this type before cleaning this specimen any further. This comes from Pennsylvanian aged Deer Creek Limestone. I thought maybe it could be an Amphiscapha?

Edited April 29, 2023 by Collector9658

[PFOOLEY]

@cngodles

[cngodles]

This is related, but it's not Amphiscapha. You'll notice that the growth lines are concave at the anterior margin (aperture opening), they are straighter on Amphiscapha. The carinae would be rugose, these look smooth. Last, the base would be flat, this is concave.

 

I would suggest looking into Euomphalus Sowerby 1814

 

Your photo is of the base (it's upside down). When comparing figures, use the ones that have the whorl wrapped counterclockwise.

Edited April 29, 2023 by cngodles

[Collector9658]

Comparing the two genera Euomphalus does look like a better match. The 3 I've found are all upside-down. I'll try cleaning one and see how it compares after. Thanks @cngodles