Where: Algeria (35.1° N, 1.8° W: paleocoordinates 28.5° N, 0.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Polymorphum ammonoid zone, Bayada Formation, Tenuicostatum (183.0 - 182.0 Ma)

• Mirabile subzone

• bed-level stratigraphic resolution

Environment/lithology: offshore ramp; lithified lime mudstone

Size class: macrofossils

Primary reference: S. Elmi, A. Marok, A. Sebane and Y. Alméras. 2009. Importance of the Mellala section (Traras Mountains, northwestern Algeria) for the correlation of the Pliensbachian-Toarcian boundary. Volumina Jurassica 7:37-45 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 148283: authorized by Matthew Clapham, entered by Matthew Clapham on 16.07.2013

Creative Commons license: CC BY (attribution)