Destombes Loc. 1908. Jbel Irhir n’Ouadou, entre Amalou n’Boufsass (Ordovician of Morocco)

Also known as First Bani Grp, d'Izgouiren Fm., Anti-Atlas Mts., Morocco

Where: Taroudannt, Morocco (29.0° N, 8.9° W: paleocoordinates 84.7° S, 83.9° E)

When: Lagenochitina ponceti other zone, d’Izgouiren Formation (First Bani Group), Dobrotivian (460.9 - 457.5 Ma)

• Now called Izegguirene formation.

• formation-level stratigraphic resolution

Environment/lithology: shoreface; lithified, argillaceous sandstone

• Argillaceous sandstone

Size class: macrofossils

Primary reference: C. Babin and J. Destombes. 1990. Les mollusques bivalves et rostroconches Ordoviciens de l’Anti-Atlas marocain: Intérêt paléogéographique de leur inventaire. Géologie Méditerranéenne 17:243-261 [A. Miller/P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 20971: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 13.06.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• Primarily mollusc taxonomy and biostrat. with others listed
Trilobita
 Phacopida - Acastidae
Kloucekia sp. Delo 1935 trilobite
 Phacopida - Dalmanitidae
Crozonaspis sp. Henry 1968 trilobite
 Phacopida - Homalonotidae
Eohomalonotus sp. Reed 1918 trilobite
Eohomalonotus cf. vicaryi Salter 1865 trilobite
Eohomalonotus cf. brongniarti Deslongchamps 1825 trilobite
 Asaphida - Asaphidae
Asaphidae indet. Burmeister 1843 trilobite
 Asaphida - Trinucleidae
Trinucleidae indet. Hawle and Corda 1847 trilobite
Bivalvia
 Nuculida - Cardiolariidae
Cardiolaria sp. Munier-Chalmas 1876 clam