ammonites
Tegula masiasi DeVries 2007 (top snail)

Gastropoda - Trochoidea - Trochidae

Full reference: T. J. DeVries. 2007. The Cenozoic Tegulinae (Gastropoda: Trochidae) from southern Peru. The Nautilus 121(4):163-181

Belongs to Tegula according to T. J. DeVries 2007

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

Type specimen: UWBM 97903, a partial shell

Ecology: epifaunal grazer

Average measurements (in mm): partial shell 7.00 x 15.90