Destombes Loc. 1822. Jbel Bou-Isidane S D'Alnif (Ordovician to of Morocco)

Also known as Bed 1822 of reference, Ktaoua Grp, Anti-Atlas Mts., Morocco

Where: Maïder, Morocco (31.0° N, 5.0° W: paleocoordinates 82.0° S, 88.4° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Lower Ktaoua Formation (Ktaoua Group), Dobrotivian to Dobrotivian (460.9 - 449.5 Ma)

• "Ce gisement se situe dans la Formation inferieure du Ktaoua du Groupe du Ktaoua". The Lower Ktaoua is that lowest formation of that Ktaoua Group.

Environment/lithology: marine; lithified, concretionary limestone

• Pellitic limestone nodules

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 20970: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 13.06.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Primarily mollusc taxonomy and biostrat. with others listed
 Odontopleurida - Odontopleuridae
Selenopeltis sp. Hawle and Corda 1847 trilobite
 Phacopida - Dalmanitidae
 Phacopida - Cheiruridae
"Actinopeltis sp." = Cheirurus (Actinopeltis)
"Actinopeltis sp." = Cheirurus (Actinopeltis) Hawle and Corda 1847 trilobite
 Phacopida - Homalonotidae
Colpocoryphe grandis Snajdr 1956 trilobite
 Phacopida - Calymenidae
Prionocheilus sp. Rouault 1847 trilobite
 Hyolithida -
 Orthida - Heterorthidae
 Arcida - Glyptarcidae
"? Glyptarca lusitanica" = Hemiprionodonta lusitanica
"? Glyptarca lusitanica" = Hemiprionodonta lusitanica Sharpe 1853 clam
 Nuculida - Praenuculidae
Praenucula costae Sharpe 1853 clam
 Caryocystitidacea - Echinosphaeritidae