Issue: 1
, Volume: 300
, Уear of publication: 2021
Serial edition: Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen
Pages: 23-31
Abstract
A new belemnite species from the Aalenian of the Swabian Alb is introduced herein. Acrocoelites ippolitae Weis n. sp. is hitherto the youngest representative of the genus Acrocoelites in NW Europe (lower to upper Aalenian). Specimens tentatively assigned to the new species (A. cf. ippolitae) are known also from lower Bajocian strata of Luxembourg. The unique morphology of the apical grooves distinguishes it chiefly from other coeval megateuthidid taxa. Considering the peculiar position of the ventral groove, A. ippolitae is suggested to be part of an ancestral lineage leading to the megateuthidid genus Eocylindroteuthis, from the lower Bajocian.
