TITHONIAN-LOWER CRETACEOUS APTYCHI (AMMONOIDEA) FROM MOUNTAINOUS CRIMEA

Abstract

Eleven species and subspecies of the genus Punctaptychus Trauth, 1927 and a new genus, Tauriaptychus, from the Tithonian-Berriasian, Valanginian, and Hauterivian of the Mountainous Crimea are described: P. punctatus punctatus, P. punctatus rectecostatus, P. malbosi, P. cinctus. P. monsalvensis, P. imbricatus, T. angulicostatus angulicostatus, T. angulicostatus radiatus, T. angulicostatus atlanticus, T. angulicostatus atlanticus-radiatus, and T. didayi. Microstructure of the aptychi is studied in thin cross sections.