Upper Fezouata Formation North of Zagora (Ordovician of Morocco)

Also known as Draa Valley

Where: Morocco (30.5° N, 5.9° W: paleocoordinates 76.9° S, 104.8° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Lower Member (Fezouata Formation), Floian (477.7 - 470.0 Ma)

• fossils occur throughout the member, which spans the Floian

• member-level stratigraphic resolution

Environment/lithology: basinal (); lithified, green, silty mudstone and micaceous, sandy siltstone

• "the depositional environment for all localities is a deeper-water, low-energy environment"
• "The strata containing exceptionally preserved specimens vary from greenish silty mudstones to sandy siltstones rich in detrical micra"

Size class: macrofossils

Preservation: adpression, soft parts, replaced with pyrite

Reposited in the YPM

• specimens are in "the Yale Peabody Museum of Natural History, Lyon 1 University, the Natural History Museum of Lyon, the Natural History Museum of Marseille, the Natural History Museum of Toulouse, the National Museums of Scotland and the Sedgwick Museum"

Primary reference: P. Van Roy, P. J. Orr, J. P. Botting, L. A. Muir, J. Vinther, B. Lefebvre, K. Hariri and D. E. G. Briggs. 2010. Ordovician faunas of Burgess Shale type. Nature 215-218 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 96113: authorized by John Alroy, entered by John Alroy on 17.05.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• composite of multiple collections from "about 500 km2 in the Draa Valley"

•numerous other taxa are present but not identified formally

 Rhombifera - Macrocystellidae
"Macrocystella bohemica" = Macrocystella bohemicus
"Macrocystella bohemica" = Macrocystella bohemicus Barrande 1867
 Mollisoniida - Mollisoniidae
aff. Thelxiope sp.
"Thelxiope-like"
Artiopoda
 Aglaspidida - Tremaglaspididae
Tremaglaspis sp. Fortey and Rushton 2003
Marrellomorpha
 Marrellida - Mimetasteridae
cf. Furca sp. Fritsch 1908
"probably" this genus