Trophon cf. geversianus (Pallas, 1774)

Trophon cf. geversianus (Pallas, 1774)

    On exposed rocks, feeding on mytulids, Playa Larralde, Peninsula Valds, 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 Valds, Chabut Province, Argentina (32 mm.)

Trophon cf. geversianus (Pallas, 1774) Group Photo

Golfo San Jos, Peninsula Valdes, Argentina. Slide photography by Emilio F. Garcia.

Trophon geversianus (Pallas, 1774) Group Photo Showing Variability

Tierra del Fuego, Argentina. Slide photography by Emilio F. Garcia.