Where: Tunisia (35.4° N, 9.8° E: paleocoordinates 20.1° N, 8.8° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Bireno Formation, Middle Turonian (93.5 - 89.3 Ma)

• Helvetoglobotruncana helvetica Zone – Dicarinella biconvexa Subzone = middle part of the Middle Turonian

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified marl

Size class: mesofossils

Preservation: recrystallized, replaced with calcite

Collection methods: bulk, sieve,

• 6 vertebrae

Primary reference: R. Storc. 2004. The Late Cretaceous brittle star Ophiosmilax? alternatus from Europe and northern Africa. Géobios 37:395-401 [L. Villier/J. Millet/J. Alroy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 58091: authorized by Loic Villier, entered by Julien Millet on 18.01.2006