Kerrando Gourrama area, Bed 26 (Jurassic of Morocco)

Where: Morocco (32.2° N, 4.3° W: paleocoordinates 27.0° N, 0.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Agoudim Formation, Concavum (175.6 - 171.6 Ma)

• Lower member of the Agoudim Fm. Limitatum subzone.

• bed-level stratigraphic resolution

Environment/lithology: marine; gray marl and limestone

• epaisse serie de marnes grises, entrecoupee par de petit bancs calcaires dont le pendage varie de 30 a 40 vers le Nord

Size class: macrofossils

Collection methods: Specimen could be same as in Sadki D. and Almeras Y., 1992 - Le Brachiopods aaleno-bajociens de la region Rich (Haut-Atlas central, Maroc): implications biostratigraphiques et paleoecologiques. Cahiers Inst. Catho. Lyon, ser. Sci., 5: 93-105

Primary reference: D. Sadki. 1994. Proposition de la region de Rich (Haut-Atlas central marocain) comme stratotype auxiliaire submediterranen pour la limite Aalenien Bajocien. Geobios 17:431-440 [M. Aberhan/T. Schossleitner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 141217: authorized by Martin Aberhan, entered by Thomas Schossleitner on 21.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Pectinoidae
Chlamys sp. Röding 1798 scallop
 Pectinida - Limidae
Ctenostreon sp. Eichwald 1862 file clam
 Ostreida - Posidoniidae
"Bositra buchii" = Bositra buchi
"Bositra buchii" = Bositra buchi Roemer 1836 oyster
 Carditida - Astartidae
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
 Nuculida - Nuculidae
Cephalopoda
 Ammonitida - Graphoceratidae
 Ammonitida - Sonniniidae
Asthenoceras sp., "Fontannesia sp." = Fontannesia, "Fontannesia luculenta" = Fontannesia, "Nannoceras sp." = Fontannesia, "Euhoploceras sp." = Sonninia (Euhoploceras)
"Fontannesia sp." = Fontannesia ammonite
"Fontannesia luculenta" = Fontannesia ammonite
"Nannoceras sp." = Fontannesia ammonite
"Euhoploceras sp." = Sonninia (Euhoploceras) ammonite
 Ammonitida - Hammatoceratidae
"Rhodaniceras sp." = Eudmetoceras, Haplopleuroceras sp., Haplopleuroceras subspinatum, "Ambersites sp." = Abbasites
"Rhodaniceras sp." = Eudmetoceras ammonite
"Ambersites sp." = Abbasites ammonite
 Ammonitida - Oppeliidae
 Ammonitida - Otoitidae
Rhynchonellata
 Terebratulida - Zeilleriidae
 Terebratulida - Loboidothyrididae
Loboidothyris sp. Buckman 1917