Snails of Mexico & Central America: Part 1 – Invertebrate Zoology https://www.floridamuseum.ufl.edu/iz/resources/mexico-central-america-snails/part-1/
PART 1 Class GASTROPODA Subclass VETIGASTROPODA Superfamilies PART 1 Class GASTROPODA Subclass VETIGASTROPODA Superfamilies Superfamily HELICINOIDEA Family CERESIDAE Thiele, 1925 CERESINAE Thiele, 1925; Handbuck der Zoologie, 5: 78. CERESIDAE Thompson, 1980; Malacologia, 2
Snails of Florida ID Guide Land Snails of Papua New Guinea