Tmed el Ksour Member, Zallha Formation: Priabonian, Libya

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Eupatangus formosus
Kismondia saemanni
Carcaredon augustidens
Pycodus sp.
Actinopteri - Spariformes - Sparidae
Chrysophrys sp. (Cuvier 1829)
corrected as Otolithus (Chrysophris)
Echinoidea - Cidaroida - Cidaridae
Porocidaris schmeidelli
Echinoidea - Echinolampadoida - Echinolampadidae
Echinolampas chiesai
Subspecies Echinolampas chiesai messlei
Echinolampas perroero
Echinolampas africanus
Echinolampas libycus
Echinoidea - Spatangoida - Schizasteridae
Schizaster meslei
Bivalvia - Ostreida - Ostreidae
Ostrea elegans Deshayes 1832
recombined as Cubitostrea elegans
Ostrea reili
Bivalvia - Ostreida - Gryphaeidae
Exogyra exogyroides
Exogyra maradensis
Bivalvia - Ostreida - Malleidae
Vulsella crispata
Bivalvia - Pectinida - Plicatulidae
Plicatula varioloia
Plicatula bellardii
Bivalvia - Pectinida - Anomiidae
Carolia lefevrei Fischer 1880
recombined as Wakullina (Huyella) lefevrei
Carolia placunoides Cantraine 1838
Gastropoda - Cypraeidae
Gisortia (Vicetia) stefanini (Negri 1934)
original and current combination Gisortia (Vicetia) stefaninii
Gastropoda - Neogastropoda - Turbinellidae
Turbinella fegnens
Gastropoda - Strombidae
Terebellum fusiforme Lamarck 1802
Nummulitidae
Nummulites beaumonti
Nummulites fabiani
Nummulites bouillei
see common names

Geography
Country:Libya
Coordinates: 28.9° North, 18.9° East (view map)
Paleocoordinates:24.7° North, 15.2° East
Basis of coordinate:stated in text
Geographic resolution:local area
Time
Period:Paleogene Epoch:Eocene
Stage:Priabonian 10 m.y. bin:Cenozoic 3
Key time interval:Priabonian
Age range of interval:37.71000 - 33.90000 m.y. ago
Stratigraphy
Formation:Zallah Member:Graret el Jifa
Stratigraphic resolution:member
Stratigraphy comments: The name Zallah Formation was proposed to include the units Tmed El Ksour and Graret el Jifa members of the Wadi Tamet Formation. It varies in thickness from 110-160 m. It includes three subunits: 1) the lower unit is 90 m (295 ft) thick and characterised by the predominance of bioclastic limestones and dolomites, usually glauconitic and containing gypsum interbeds. The middle unit if 38 m (125 ft thick) and made up of green non-fossiliferous clays, interbedded with gypsum. The upper unit is 22 m (72 ft) thick and composed of clays and gypsum with beds of bioclastic dolomite.
Lithology and environment
Primary lithology:dolomitic,glauconitic,gypsiferous,shelly/skeletal lithified "limestone"
Secondary lithology:dolomitic,gypsiferous claystone
Includes fossils?Y
Includes fossils?Y
Lithology description: Bioclastic limestones and dolomites, usually glauconitic and containing gypsum interbeds, clays and gypsum with beds of bioclastic dolomite.
Environment:marine indet.
Geology comments: No paleoenvironmental data provided.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,microfossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Collection method comments: No detailed collection data reported.
Taxonomic list comments:Collection based on taxa listed in text as typical of formation. Include mollusca, echinodermata and foraminifera.
Metadata
Database number:42144
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-07-24 15:32:56 Last modified:2013-11-25 13:37:23
Access level:the public Released:2004-07-24 15:32:56
Creative Commons license:CC BY
Reference information

Primary reference:
11199. E. E. Tawadros. 2001. Geology of Egypt and Libya 1-468 [A. Miller/A. Hendy/M. Clapham]