ammonites
Tegula marylandicum Martin 1904 (top snail)

Gastropoda - Trochoidea - Trochidae

Alternative combination: Calliostoma marylandicum

Full reference: G. C. Martin. 1904. Gastropoda. Maryland Geological Survey Miocene(Text):131-269

Belongs to Tegula according to L. W. Ward 1998

Sister taxa: Tegula (Tegula), Tegula forbesi, Tegula jeanae, Tegula masiasi, Tegula melaleucos, Tegula pellisserpentis, Tegula tridentata, Tegula viridula

Ecology: epifaunal grazer