Western End of Mauritanian Adrar (Level 3) (Silurian of Mauritania)

Where: Mauritania (19.8° N, 13.5° W: paleocoordinates 77.5° S, 22.3° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Gorstian (427.4 - 425.6 Ma)

• e-beta-1, lower Budnanian

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, yellow siltstone

• 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).
• "siltstone [sic] gis-jaune a patine orangee"

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 27330: authorized by Michael Foote, entered by Michael Foote on 02.12.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

 Rhynchonellida - Trigonirhynchiidae
Ancillotoechia sp. Havlicek 1959
 Rhynchonellida - Camarotoechiidae
Camarotoechia sp. Hall and Clarke 1893