Additional records of scaphitid ammonites from the basal upper Maastrichtian (Upper Cretaceous) of eastern Poland

作者：Machalski Marcin^*; Jagt John W M; Dubicka Zofia

来源：Bulletin de l'Institut Royal des Sciences Naturelles de Belqique, Sciences de la Terre, 2008, 78: 261-268.

• Ammonoidea
• Scaphitidae
• taxonomy
• white chalk
• Maastrichtian
• Poland

New records of rare and/or poorly known scaphitid ammonites are presented from thee basal upper Maastrichtian (Upper Cretaceous) white chalk exposed at Chelm quarry, Lublin Upland (eastern Poland). The described and illustrated material comprises four specimens, all preserved as composite moulds, and includes a well preserved microconch of Hoploscaphites schmidi (BIRKELUND, 1982), fragmentary specimens of H. felderi KENNEDY, 1987and acanthoscaphites (Euroscaphites) varians blaszkiewicz JAGT, KENNEDY & MACHALSKI, 1999. as well as a pathological macroconch of Hoploscaphites constrictus ivivensis MACHALSKI, 2005b.

• 出版日期2008