Reef unit 1, subunit 2 (Jurassic of Morocco)

Where: Morocco (30.6° N, 9.6° W: paleocoordinates 28.0° N, 5.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lalla Oujja Formation, Late/Upper Oxfordian (161.2 - 155.7 Ma)

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

• The section is situated in the southern part of the El Jadida-Agadir basin, delimited to the north by the Jbilet Massif, to the east by the Paleozoic Massifs of the High Atlas, to the south by the Souss Plain, and to the west by the Atlantic Ocean.
• Massive bioconstruction, mainly made of corals and microbialites and can be laterally followed over few hundreds of metres, without any lateral thickness variations. Prior to realisation of a framework in the reef unit 1, the section reveals three successive 10-20 cm-thick bioclastic subunits, rich in echinoderms.

Size class: mesofossils

Primary reference: N. Olivier, B. Martin-Garin, C. Colombié, J. J. Cornée, F. Giraud, J. Schnyder, B. Kabbachi and K. Ezaidi. 2012. Ecological succession evidence in an Upper Jurassic coral reef system (Izwarn section, High Atlas, Morocco). Geobios 45(6):555-572 [W. Kiessling/M. Krause]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 138315: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 12.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Zoantharia -
Scleractinia indet. Bourne 1900 stony coral
 Scleractinia - Stylinidae
Enallhelia sp. Milne-Edwards and Haime 1849 stony coral
 Scleractinia - Microsolenidae
Dimorpharaea sp. de Fromentel 1861 stony coral
Dermoseris sp. Koby 1887 stony coral