Can a better linguist than I (not hard!) help out here?
The belemnite species suffix for Lagonibelus beaumontiana (d'Orbigny) would presumably be based on "belus" being feminine.
However, original Russian sources give it as "L. beaumontianus" and other belemnite genera with the same element (Pleurobelus, Gastrobelus etc.) all have masculine species endings.
I know gender endings can be tricky and -us isn't always masculine but there seems to be widespread discrepancy here.
(The London NHM and Martill & Hudson's Fossils of the Oxford Clay both go wit