2180-II-C-4, Dabdab Formation, Ash Shati area, N. flank of Murzuk Basin (Devonian of Libya)

Where: Libya (27.6° N, 14.3° E: paleocoordinates 46.1° S, 31.7° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Dabdab Formation, Frasnian (382.7 - 372.2 Ma)

• Frasnian age indicated on composite section. "The brachiopod fauna does not determine exactly the age; the presence of atrypid brachiopods indicates a pre-Famennian age as all the Atrypidae became extinct at the end of the Frasnian."

• bed-level stratigraphic resolution

Environment/lithology: marine; ferruginous sandstone and claystone

• "[Dabdab Fm.] corresponds to the "Lower Iron-Bearing Formation" of the French Study Group (1972)...The lower part of the Fm. is prevalently built of claystones whereas ferruginous siltstones and oolites are characteristic of the upper part (ore-bearing member "L")...Fossils are generally scarce...poorly preserved (deformed, often incomplete)...The upper part of the ore-bearing member (ferruginous sst. 2 km N of Brak) yielded [fossil list]..."

Primary reference: V. Havlicek and P. Rohlich. 1987. Devonian and Carboniferous brachiopods from the northern flank of the Murzug Basin (Libya). Sbornik Geologickych Ved: Paleontologie 28:117-177 [A. Miller/J. Sessa/J. Sessa]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 36820: authorized by Michael Foote, entered by Michael Foote on 17.02.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Spiriferida - Ambocoeliidae
 Atrypida - Atrypidae
Spinatrypina sp. Rzhonsnitskaya 1964