Shale in the Pays des Sokhrats: Quartzites SE of Sidi-Beboul (Silurian to of Morocco)

Where: Morocco (33.0° N, 7.0° W)

• Paleocoordinates: 34.7° S, 12.0° W (Wright 2013)

• coordinate estimated from map

• local area-level geographic resolution

When: Ludlow to Ludlow (427.4 - 423.0 Ma)

• Graptolites in underlying beds suggest Ludlow age. "The beds from which the fauan were obtained overlie those bearing graptolites, hence on stratigraphic superpositional relations the beds bearing it are Ludlow or younger in age."

• formation-level stratigraphic resolution

Environment/lithology: marine; sandstone and shale

• Some 500km N of Ludlow 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."
• "quartzites"

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 27399: authorized by Michael Foote, entered by Michael Foote on 05.12.2002, edited by Pete Wagner

Creative Commons license: CC0 (CC0)

Taxonomic list

Gastropoda
 Bellerophontida -
Bellerophontoidea indet. M'Coy 1851 snail
Bivalvia
 Modiomorphida - Modiomorphidae
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
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
Strophomenata
 Strophomenida - Strophodontidae
"Stropheodonta cf. simulans" = Strophomena (Strophodonta)
"Stropheodonta cf. simulans" = Strophomena (Strophodonta)
Demospongiae
 Hadromerida - Suberitidae
Chaetetes cf. fletcheri demosponge
"Chaetetes of the C. fletcheri type"