Genus Democrinus Perrier, 1883

Type species. Democrinus parfaiti Perrier, 1883, Recent.

Remarks. In the absence of precise information on brachials and columnals that could clearly be attributed to them, and in view of the great variability of known external morphology in extant species (Roux 1978b), the attribution of fossil species to this genus is based solely on the morphology of the proximal face of the radial circlet (Roux et al. 2019). We consider that this generic attribution needs confirmation, awaiting data on brachials and columnals; for this reason, we here use open nomenclature, as? Democrinus .

Stratigraphical distribution. Ypresian–Recent, possibly already from Danian.