Where: Switzerland (47.3° N, 9.5° E: paleocoordinates 30.1° N, 13.7° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Schrattenkalk Formation, Middle Albian to Middle Albian (109.0 - 99.6 Ma)

• The high abundance of Mortoniceras and Hysteroceras combined with rare occurrences of Mirapelia and Hoplites in Semelenberg Nord II indicate a middle to early late Albian age. These ammonites indicate an early late Albian age (most likely a mix of Dipoloceras cristatum Zone and Mortoniceras spp. Zones). A very low number of possible middle Albian ammonites (Hoplites mirabiliformis and Mirapelia cf. buarquianum) suggest that the fauna mostly contains late Albian faunal elements.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, glauconitic, phosphatic limestone

Size class: macrofossils

Preservation: mold/impression

Collected by Peter Kürsteiner, Amane Tajika

• Repository: Naturmuseum St. Gallen

Primary reference: A. Tajika, K. Tschanz, and C. Klug. 2018. New Albian ammonite faunas from Semelenberg (Alpstein, Switzerland) and their paleoecology. Swiss Journal of Palaeontology 137:65-76 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 197618: authorized by Matthew Clapham, entered by Matthew Clapham on 17.11.2018

Creative Commons license: CC BY (attribution)