Central High Atlas, Rich-Gourrama area, second reef complex (Jurassic of Morocco)

Also known as Reef 3447

Where: Morocco (32.3° N, 4.4° W: paleocoordinates 27.2° N, 0.4° W)

• coordinate estimated from map

• local area-level geographic resolution

When: IV Member (Agoudim Formation), Bajocian (170.3 - 168.3 Ma)

• upper part of the member

• group of beds-level stratigraphic resolution

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

• coral patch reefs
• 2 reef levels, separated by 22 m of marls intercalated by thinly-bedded limestones and a few small biostromes.

Size classes: macrofossils, microfossils

Collection methods: peel or thin section,

Primary reference: A. Ait Addi. 2006. The dogger reef horizons of the Moroccan Central High Atlas: New data on their development. Journal of African Earth Sciences 45:162-172 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 68165: authorized by Wolfgang Kiessling, entered by Uta Merkel on 05.01.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

 Foraminiferida -
"Foraminiferida indet." = Foraminifera
"Foraminiferida indet." = Foraminifera d'Orbigny 1826 foram
Ostracoda indet. Latreille 1802 ostracod
 Terebratulida - Zeilleriidae
 Terebratulida - Lissajousithyrididae
Monsardithyris sp. Alméras 1970
 Sabellida - Serpulidae
Serpulidae indet. Rafinesque 1835
Bivalvia indet. Linnaeus 1758 clam
 Ostreida - Ostreidae
Lopha (Actinostreon) sp. Bayle 1878 oyster
Ostrea sp. Linnaeus 1758 oyster
 Ostreida - Plicatostylidae
Lithiotidae indet. Reis 1903 oyster
 Heterobranchia - Nerineidae
Nerineidae indet. Zittel 1873 snail
Bryozoa indet. Ehrenberg 1831
 Cidaroida - Cidaridae
Cidaris sp. Leske 1778 pencil urchin
 Stomopneustoida - Stomechinidae
 Euechinoidea - Pseudodiadematidae
 Euechinoidea - Hemicidaridae
Porifera indet. Grant 1836
 Lithistida -
 Spongiomorphida -
Spongiomorpha indet. Alloiteau 1952
 Zoantharia -
Scleractinia indet. Bourne 1900 stony coral
 Caulerpales - Halimedaceae
"Cayeuxia" sp. Frollo 1938