Eotomaria Ulrich & Scofield, 1897

Australian Carboniferous species. Eotomaria umbilicata n.sp., from 'Marohn'.

Remarks. Eotomaria resembles somewhat Mourlonia de Koninck (1883), but differs in that Mourlonia has a taller, more globular shell with minute umbilicus. Eotomaria was previously recorded as having the range from Ordovician to Silurian. If it is correctly placed, this record may extend to early Carboniferous.