Western End of Mauritanian Adrar (Level 8) (Devonian to of Mauritania)

Where: Mauritania (19.8° N, 13.5° W)

• Paleocoordinates: 42.6° S, 21.4° W (Wright 2013)

• coordinate estimated from map

• local area-level geographic resolution

When: Pragian to Pragian (410.8 - 393.3 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; ferruginous sandstone and ooidal sandstone

• More or less at Ludlow shoreline according to paleogeographic map of ref. 7455. Entire sequence is: 1. Massive, cross-bedded sandstone at base; 2. sandstone with Scolithos (Llandovery); 3. Yellow-gray siltstone (lower Budnanian); 4. shale (lower Budnanian); 5. Blue or reddish-brown, shelly limestone (lower/upper Budnanian); 6. gray shale (upper Budnanian); 7. ferruginous sandstone (?Lochkovian/Pragian); 8. ferruginous sandstone (oolitic in places) (Pragian/Emsian); 9. sandstone with ferruginous parts (Pragian/Emsian); 10. ferruginous sandstone, psammitic in part (Pragian/Emsian).
• "gres ferrugineux a passees grossieres ou oolithiques a Euryspirifer [etc.]"

Primary reference: J. Drot and J.-P. Lecorche. 1971. Sur la presence de Diabolirhynchia hollardi (Brachiopodes, Rhynchonellida) dans un niveau calcaire de l'Adrar mauritanien et ses consequences sur la stratigraphie du Siluro-Devonien de cette region. Annales de la Faculte des Sciences de Marseilles 46:181-188 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27333: authorized by Michael Foote, entered by Michael Foote on 02.12.2002

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Spiriferida - Hysterolitidae
Euryspirifer cf. pellicoparadoxus, cf. Brachyspirifer carinatus
Euryspirifer cf. pellicoparadoxus
"Euryspirifer sp. e.g. pellico-paradoxus"
Strophomenata
 Strophomenida - Eodevonariidae
Eodevonaria cf. arcuata
 Strophomenida - Chonetidae
Chonetidae indet.
Chonetidae indet. Bronn 1862