Boletín de la Sociedad Geológica Mexicana Volumen 71, núm. 3, 2019, p. 841-849 http://dx.doi.org/10.18268/BSGM2019v71n3a13

Short note

Schlueterella stinnesbecki n. sp. (Ammonoidea, Diplomoceratidae) from the Turonian–Coniacian of northeastern Mexico

Christina Ifrim

Institut für Geowissenschaften, Universität Heidelberg, Im Neuenheimer Feld 234, 69120 Heidelberg, Germany.

Christina.Ifrim@geow.uni-heidelberg.de

Abstract

A new species of the genus Schlueterella Wiedmann, 1962 is here described. Twenty specimens of this heteromorph ammonoid were collected in northern Coahuila, Mexico. Schlueterella stinnesbecki n. sp. seems to have been an endemic form in the late Turonian–early Coniacian. This is the oldest definite record of the genus and a basal form in its evolution away from Neocrioceras.

Keywords: Ammonoid, Cretaceous, Turonian, Coniacian, Mexico, endemic.