Imbricariinae Troschel, 1867

Sacchetti, Claudia, Landau, Bernard & Ávila, Sérgio P., 2023, The Lower Pliocene marine gastropods of Santa Maria Island, Azores: Taxonomy and palaeobiogeographic implications, Zootaxa 5295 (1), pp. 1-150 : 78

Subfamily Imbricariinae Troschel, 1867

Discussion. The presence of mitrid gastropods in the assemblages of Santa Maria was already recognised by Bronn in Reiss (1862) who erected the species Mitra volvaria for a specimen from Pinheiros and also recorded M. aperta Bellardi, 1850 from the same locality. Mayer (1864), refigured the specimen of M. volvaria , considered M. aperta from Santa Maria a new species erecting the name M. hoernesi Mayer, 1864 , and described a third species, endemic to Santa Maria, M. peregrinula Mayer, 1864 . The mitrid material collected since then is extremely poor, and all determinations below are speculative.

As discussed by Landau et al. (2019:193), placing European Neogene mitrid species into genera is almost impossible after the molecular phylogenetic work of Fedosov et al. (2018). Those authors showed that the three extant Mediterranean species fell into two separate clades that were indistinguishable based on shell characters. Mitra cornicula ( Linnaeus, 1758) and M. zonata Marryat, 1818 they placed in Episcomitra , and M. cornea Lamarck, 1811 in Isara H. Adams & A. Adams (1853) ( Fuscomitra Pallary, 1900 is a synonym).

Genus Cancilla Swainson, 1840

Type species. Mitra isabella Swainson, 1831 ( Swainson 1840: 320) , by subsequent designation ( Herrmannsen, 1846). Present-day, Indo-Pacific.