Encrinite Limestones in the Zemmour Noir (Silurian to of Mauritania)

Where: Mauritania (26.0° N, 11.0° W: paleocoordinates 60.2° S, 13.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Pridoli to Pridoli (423.0 - 393.3 Ma)

• "Encrinite Limestones in Zemmour Noir...Pridoli and possibly Gedinne in age"

• formation-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal limestone and shale

• According to paleogeographic map in ref. 7455, this section would be essentially at the Pridolian shoreline. The shoreline, according to this map, migrated some 1000km from the SE to the NW (present-day coordinates) during the Llandovery to Gedinnian timespan.
• "encrinite limestones...and shales"

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 27173: authorized by Michael Foote, entered by Michael Foote on 21.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Cyrtodontida - Antipleuridae
Panenka bohemica
Pterobranchia
 Graptoloidea - Monograptidae
Monograptus ex gr. hercynicus
Monograptus ex gr. hercynicus graptolite
"a monograptid of the M. hercynicus group"
Crinoidea
 Monobathrida - Scyphocrinitidae
Scyphocrinites elegans