Shale in the Pays des Sokhrats: Quartzites at Sokhrat Es-Sbaa (Silurian to of Morocco)

Where: Morocco (33.0° N, 7.0° W)

• Paleocoordinates: 31.9° S, 10.9° W (Wright 2013)

• coordinate estimated from map

• local area-level geographic resolution

When: Pridoli to Pridoli (423.0 - 393.3 Ma)

• "forms suggestive of age in the span of Pridoli-Gedinne"

• formation-level stratigraphic resolution

Environment/lithology: marine; sandstone and shale

• Some 300km N of Pridoli shoreline, according to paleogeographic map of ref. 7455. "The Llandovery and Ludlow age beds in the Pays de Sokhrats and nearby areas are primarily shale. The post-Ludlow age strata are predominantly quartzites and yield a fauna suggestive of nearshore conditions."
• "quartzite"

Primary reference: W. B. N. Berry and A. J. Boucot. 1973. Correlation of the African Silurian rocks. Geological Society of America Special Paper 147:1-83 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27403: authorized by Michael Foote, entered by Michael Foote on 05.12.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Orthida - Draboviidae
"Orthis lunata" = Salopina lunata
"Orthis lunata" = Salopina lunata Sowerby 1839
 Rhynchonellida - Trigonirhynchiidae
"Rhynchonella nucula" = Microsphaeridiorhynchus nucula
"Rhynchonella nucula" = Microsphaeridiorhynchus nucula Sowerby 1839
Bivalvia
 Modiomorphida - Modiomorphidae
Modiolopsis complanata
Trilobita
 Phacopida - Homalonotidae
Homalonotus sp.
Homalonotus sp. König 1825 trilobite
 Phacopida - Acastidae
"Acaste spinosa" = Acastella spinosa
"Acaste spinosa" = Acastella spinosa Salter 1864 trilobite