Cretaceous (Santonian) terrestrial molluscs described by Tausch (1886) from Ajka, Hungary, and Aigen, Austria

Leopold Tausch published in 1886 a study on a Late Cretaceous molluscan fauna of Ajka, Hungary.
In the same work, he described five species from deposits of similar age at Aigen, Austria. The material
from that publication was long considered lost. We have rediscovered the type material from Ajka in the
collection of the Department of Paleontology at the University of Vienna. With a few exceptions, nearly
all figured specimens were located. Among the species described from Aigen, only Bulimus fuggeri was
found in the collections of GeoSphere Austria. Here, we provide an illustrated overview of the terrestrial snail species from the Late Cretaceous of Ajka and, where taxonomically relevant, discuss related species
from other localities and associated aquatic taxa. Ptychicula specialis Tausch, 1886, previously considered
a land snail, is here found to be a subjective synonym of the aquatic Melanopsis ajkaensis Tausch, 1886;
however, the genus Ptychicula Tausch, 1886 remains valid for the two melanopsid species described
from Ajka. Two new species (Ajkaia corpulenta Páll-Gergely, sp. n., and Anapomatias klebelsbergi Páll-
Gergely, sp. n.) and two new genera (Brunszvikia Páll-Gergely, gen. n. Tingtingia Páll-Gergely, gen. n.)
are described.