Where: Morocco (33.1° N, 7.9° W: paleocoordinates 61.4° S, 20.1° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Calcaire de Bir Krereis Formation, Lochkovian (419.2 - 410.8 Ma)

• "[Fossils] suggest Gedinne age for the limestone and interbedded shales bearing them." Roch (1950) referred to shelly limestone layers as "Calcaire de Bir Krereis", but that name has not been formally defined or adopted. As there are no other rocks of this age described in this area, that is the closest possible name.

• formation-level stratigraphic resolution

Environment/lithology: marine; limestone and shale

Size class: macrofossils

Primary reference: W. B. N. Berry and A. J. Boucot. 1973. Correlation of the African Silurian rocks. Geological Society of America Special Paper 147:1-83 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27386: authorized by Michael Foote, entered by Michael Foote on 05.12.2002

Creative Commons license: CC BY (attribution)