Chrysostoma paradoxum (Born, 1778); family Trochidae
G.W. Tryon
1889
<a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/item/77914">G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia; pl. 45 # 91, 92</a>