Eastern Whitelip

Neohelix albolabris

''Neohelix albolabris'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Polygyridae.
Eastern Whitelip (Neohelix albolabris)? Tentative ID.
Snails chowing down on Stereum (lobatum or fasciatium). In a moist mixed forest understory. Please feel free to correct me! Eastern Whitelip,Geotagged,Neohelix albolabris,United States,Winter

Appearance

N. albolabris is one of the largest native land snails in North America. Its range extends from Maine to Georgia and west to the Mississippi River. In the northern part of this range some specimens may grow to have shells 30mm in diameter. In the southern part of the range, some specimens grow to 40 mm diameter.
Snail - Neohelix albolabris *I need to confirm the ID. This snail was very large (~35-40 mm wide), so I think the ID is correct. But, it could also be the less common Mesodon thyroidus.

Habitat: Dense forest bordering a stream and disused quartz mine
https://www.jungledragon.com/image/107635/snail_-_neohelix_albolabris.html Geotagged,Neohelix albolabris,Summer,United States

Naming

Alternate names for Neohelix albolabris are Helix albolabris and Triodopsis albolabris. It is the first land snail to be named by an American-born naturalist, Thomas Say in 1817.

References:

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Taxonomy
KingdomAnimalia
DivisionMollusca
ClassGastropoda
OrderStylommatophora
FamilyPolygyridae
GenusNeohelix
SpeciesN. albolabris