Shale in the Pays des Sokhrats: Quartzites WNW of Bir-el-Rhandour (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)

• "The fauna is Pridoli or Gedinne in age"

• 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 27401: authorized by Michael Foote, entered by Michael Foote on 05.12.2002

Creative Commons license: CC0 (CC0)

Taxonomic list

Trilobita
 Phacopida - Acastidae
"Acaste spinosa" = Acastella spinosa
"Acaste spinosa" = Acastella spinosa Salter 1864 trilobite
Bivalvia
 Modiomorphida - Modiomorphidae
Rhynchonellata
 Orthida - Draboviidae
"Orthis lunata" = Salopina lunata
"Orthis lunata" = Salopina lunata Sowerby 1839
 Orthida - Schizophoriidae
Schizophoria cf. striatula von Schlotheim 1813
"Schizophoria of the S. striatula type"