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Three views of a shell of Trilobopsis loricata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Superfamily: Helicoidea
Family: Polygyridae
Genus: Trilobopsis
Pilsbry, 1939

Trilobopsis is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae.


The distribution of this species is restricted to Oregon and California, USA.


The shells of species in this genus are somewhat globular and about 5 to 8 mm in diameter (1/4 to 3/16 inch).

Snails in this genus are distinguished from related snails on the basis of their reproductive anatomy.[1]


Species in the genus Trilobopsis include:[1][2]


  1. ^ a b Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico). Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 778-789.
  2. ^ [1] Trilobopsis at ITIS (Integrated Taxonomic Information System); accessed 13 Jan. 2008.