Blackites praeinflatus Steurbaut & Nolf, 2021
Steurbaut, E. & Nolf, D. 2021. The Mont-des-Récollets section (N France): a key site for the Ypresian-Lutetian transition at mid-latitudes – reassessment of the boundary criterion for the base-Lutetian GSSP. Geodiversitas. 43(11): 311-363.