Phylogenetic relationship and classification of Solaropsidae

CALCUTT, JESS; SALVADOR, RODRIGO; CUEZZO M.G.; JACKSON, M.

ARCHIV FUR MOLLUSKENKUNDE DER SENCKENBERGISCHEN NATURFORSCHENDEN GESELLSCHAFT

E SCHWEIZERBARTSCHE VERLAGS

Lugar: Stuttgart; Año: 2020 vol. 149 p. 181 - 193

0003-9284

The classification of sundial snails has a long and contentious history; they have been diversely classified in Camaenidae, Pleurodontidae, Polygyridae, and also in their own family, Solaropsidae. Two genera have been recently removed from Solaropsidae (Polygyratia Gray, 1847 and Ridleya Ancey, 1901), but the status of its three remaining genera (Solaropsis Beck, 1837, Olympus Simone, 2010, and Psadara Miller, 1878) is still uncertain. We have sequenced four mitochondrial and nuclear markers of species belonging to those three genera and included them in a phylogenetic framework of all helicoid snails (Sagdoidea and Helicoidea). Our analysis strongly supports a monophyletic Solaropsidae within Sagdoidea, as well as its internal division in Solaropsinae and Caracolinae. Solaropsis and Psadara are both paraphyletic and include the monotypic Olympus. Thus, we consider the latter two genera synonymous with Solaropsis. We also review the fossil record of the family, excluding from it the genus Hodopoeus Pilsbry & Cockerell, 1945, and discussing the paleobiogeographic history of Sagdoidea and early branches of Helicoidea.