Trophon cf. geversianus (Pallas, 1774)

Trophon cf. geversianus (Pallas, 1774)

    On exposed rocks, feeding on mytulids, Playa Larralde, Peninsula ValdÚs, Chabut Province, Argentina (29 and 33 mm.)

Trophon cf. geversianus (Pallas, 1774)

Trophon geversianus has more pronounced spiral ribs, and its axial costae are more erect.

On rock, Playa Larralde, Peninsula ValdÚs, Chabut Province, Argentina (32 mm.)