Meioceras Carpenter, 1859

Egger, Christina, Neusser, Timea P., Norenburg, Jon, Leasi, Francesca, Buge, Barbara, Vannozzi, Angelo, Cunha, Regina L., Cox, Cymon J. & Joerger, Katharina M., 2020, Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America, ZooKeys 968, pp. 1-42 : 1

Genus Meioceras Carpenter, 1859

Type species.

Caecum nitidum Stimpson, 1851 from Florida by subsequent designation, Carpenter (1859): 438.

Based on the molecular phylogeny, specimens identified as Meioceras nitidum and M. cubitatum both group among Caecum species and should therefore be transferred to this genus. However, considering that only one M. nitidium is statistically supported, in the interest of taxonomic stability this finding is pending further molecular studies, once additional material is available, preferably including material from the type localities.