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Ounein A bioherm, Lemdad 1 section, High Atlas (Cambrian of Morocco)

Also known as Reef 2170

Where: Morocco (30.8° N, 8.2° W: paleocoordinates 64.0° S, 112.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lemdad Formation, Botomian (516.0 - 513.0 Ma)

• Antatlasia guttapluviae zone, upper part of the formation

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified reef rocks and lithified floatstone

• Archaeocyathan-microbial reef complex, with archaeocyathan-microbial patches in the lower part (0.2-1 m thick and 0.2-2 m wide) and tabular archaeocyathan-microbial reef (up to 2.6 m thick) in the upper part, surrounded by volcanosedimentary units

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: G. Geyer, E. Landing, and W. Heldmaier. 1995. Faunas and depositional environments of the Cambrian of the Moroccan Atlas regions. Beringeria, Special Issue 2:47-119 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80850: authorized by Wolfgang Kiessling, entered by Uta Merkel on 16.05.2008