Turricaspia simplex (Logvinenko & Starobogatov, 1969)
*1969 Pyrgula (Oxypyrgula) simplex Logvinenko & Starobogatov: 367-368, fig. 363(4).
2016 Pyrgula simplex Logvinenko & Starobogatov, 1968. - Vinarski and Kantor: 243.
Status. Pontocaspian species, identity uncertain.
Type locality. Middle Caspian Sea, 40-120 m.
Distribution. Middle and southern Caspian Sea. This species was mentioned from depths between 200 and 900 m in the South Caspian Basin of Azerbaijan (Mirzoev and Alekperov 2017).
Taxonomic notes. As for the previous species, it is highly uncertain whether this taxon is a distinct species. It might also be based on a juvenile and could be a synonym of an earlier described species, perhaps T. pulla or T. lyrata .
Conservation status. Not assessed.