Pleurotomella protocostulata is an extinct species of sea snail, a marine gastropod mollusk in the family Raphitomidae.MolluscaBase (2019). MolluscaBase. Pleurotomella protocostulata Lozouet, 2017 †. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1056623 on 2019-09-13
Distribution Fossils of this marine species were found in Oligocene strata in Aquitaine, France.
References
External links Lozouet P. (2017). Les Conoidea de l'Oligocène supérieur (Chattien) du bassin de l'Adour (Sud-Ouest de la France). Cossmanniana. 19: 3-180