Also known as Formation 4 d`Arkell & Busson

Where: Algeria (35.7° N, 0.9° W: paleocoordinates 28.3° N, 3.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Les Calcaires Médians Formation, Kimmeridgian (157.3 - 152.1 Ma)

Environment/lithology: deep subtidal; lithified limestone

Size class: microfossils

Collection methods: bulk, mechanical,

Primary reference: F. Atrops and M. Benest. 1984. Les formations du Jurassique supérieur du Bou Rheddou au Nord de Tiaret (Bordure sud-tellienne, Algérie): âge et milieux de dépôt. Géobios 17(2):207-220 [F. Fursich/S. Hicks/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45066: authorized by Franz Fursich, entered by Simone Hicks on 01.10.2004

Creative Commons license: CC BY (attribution)