Figure 1

Apertural view of used species (measurements made with a digital caliper).

(A) Thaumastus taunaisii MZUSP 104511 (length = 63.4 mm); (B) Thaumastus achilles MZUSP 111243 (length = 50.9 mm); (C) Thaumastus magnificus MZUSP 72411 (length = 72.9 mm); (D) Megalobulimus sp. MZUSP 26557 (length = 56.0 mm).