Kerrando Gourrama area, Bed 26: Concavum, Morocco

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Terebratulida - Zeilleriidae
Rugitela cf. hughesi
Zeilleria cf. truncatella (Rothpletz 1886)
Rhynchonellata - Terebratulida - Loboidothyrididae
Loboidothyris sp. Buckman 1917
Bivalvia - Nuculida - Nuculidae
Palaeonucula hammeri Defrance 1825
Bivalvia - Ostreida - Posidoniidae
Bositra buchii (Roemer 1836)
recombined as Bositra buchi
Bivalvia - Pectinida - Limidae
Ctenostreon sp. Eichwald 1862
Bivalvia - Pectinida - Pectinidae
Chlamys sp. Röding 1798
Bivalvia - Carditida - Astartidae
Nicaniella (Traustcholdia) sp. Chavan 1945
Bivalvia - Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789
Cephalopoda - Ammonitida - Hammatoceratidae
Ambersites sp. Buckman 1921
synonym of Abbasites
Rhodaniceras sp. Elmi 1963
synonym of Eudmetoceras
Haplopleuroceras sp.
Haplopleuroceras subspinatum (Buckman and Buckman 1881)
Cephalopoda - Ammonitida - Sonniniidae
Fontannesia sp.
Fontannesia luculenta
Asthenoceras sp.
Euhoploceras sp.
spelled with current rank as Sonninia (Euhoploceras)
Nannoceras sp. Buckman 1923
synonym of Sonninia (Euhoploceras)
Cephalopoda - Ammonitida - Graphoceratidae
Graphoceras sp.
Graphoceras formosum
Graphoceras (Ludwigella) limitatum Buckman 1902
Cephalopoda - Ammonitida - Otoitidae
Docidoceras sp. Buckman 1919
Cephalopoda - Ammonitida - Oppeliidae
Bradfordia sp. Buckman 1910
see common names

Geography
Country:Morocco
Coordinates: 32.2° North, 4.3° West (view map)
Paleocoordinates:27.0° North, 0.3° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Middle Jurassic
Stage:Aalenian 10 m.y. bin:Jurassic 3
Key time interval:Concavum
Age range of interval:175.60000 - 171.60000 m.y. ago
Stratigraphy
Formation:Agoudim
Local section:Gourrama Local bed:26
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Lower member of the Agoudim Fm. Limitatum subzone.
Lithology and environment
Primary lithology:gray marl
Secondary lithology: "limestone"
Lithology description: epaisse serie de marnes grises, entrecoupee par de petit bancs calcaires dont le pendage varie de 30 a 40 vers le Nord
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: 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
Metadata
Database number:141217
Authorizer:M. Aberhan Enterer:T. Schossleitner
Modifier:M. Clapham Research group:marine invertebrate
Created:2013-03-21 21:55:50 Last modified:2014-07-17 18:18:18
Access level:the public Released:2013-03-21 21:55:50
Creative Commons license:CC BY
Reference information

Primary reference:

45839. 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]