Where: Switzerland (47.5° N, 8.0° E: paleocoordinates 38.1° N, 17.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Middle Callovian to Middle Callovian (164.7 - 161.2 Ma)

• Labeled as "Collotia" and "Erymnoceras" and located between Athleta-schichten (above) and Anceps-schichten (below). Referred to as "Lower Athletaschichten" in text but likely equivalent to modern Erymnoceras coronatum zone, with the upper part probably the Peltoceras athleta zone.

• bed-level stratigraphic resolution

Environment/lithology: lithified, ferruginous, ooidal, brown, red limestone

Size class: macrofossils

Collection methods: Repository: Eidgenössische Technische Hochschule Zurich (ETH)

Primary reference: A. Jeannet. 1951. Stratigraphie und Palaeontologie des oolithischen Eisenerzlagers von Herznach und seiner Umgebung. Beiträge zur Geologie der Schweiz, Geotechnische Serie 13(5):1-240 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 171568: authorized by Matthew Clapham, entered by Matthew Clapham on 12.07.2015

Creative Commons license: CC BY (attribution)