Where: Libya (28.9° N, 18.9° E: paleocoordinates 24.7° N, 15.2° E)
• coordinate stated in text
• local area-level geographic resolution
When: Graret el Jifa Member (Zallah Formation), Priabonian (38.0 - 33.9 Ma)
• 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.
• member-level stratigraphic resolution
Environment/lithology: marine; lithified, dolomitic, glauconitic, gypsiferous, shelly/skeletal limestone and dolomitic, gypsiferous claystone
Size classes: macrofossils, microfossils
Collection methods: No detailed collection data reported.
Primary reference: E. E. Tawadros. 2001. Geology of Egypt and Libya 1-468 [A. Miller/A. Hendy/M. Clapham]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 42144: authorized by Austin Hendy, entered by Austin Hendy on 24.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Foraminifera | |
Gastropoda | |
Terebellum fusiforme Lamarck 1802 true conch | |
Turbinella fegnens snail | |
"Gisortia (Vicetia) stefanini" = Gisortia (Vicetia) stefaninii
"Gisortia (Vicetia) stefanini" = Gisortia (Vicetia) stefaninii Negri 1934 cowry | |
Bivalvia | |
Plicatula varioloia scallop
Plicatula bellardii scallop | |
"Carolia lefevrei" = Wakullina (Huyella) lefevrei, Carolia placunoides
"Carolia lefevrei" = Wakullina (Huyella) lefevrei Fischer 1880 scallop
Carolia placunoides Cantraine 1838 scallop | |
Vulsella crispata oyster | |
Exogyra exogyroides oyster
Exogyra maradensis oyster | |
"Ostrea elegans" = Cubitostrea elegans, Ostrea reili
"Ostrea elegans" = Cubitostrea elegans Deshayes 1832 oyster
Ostrea reili oyster | |
Echinoidea | |
Porocidaris schmeidelli pencil urchin | |
Schizaster meslei heart urchin | |
Actinopteri | |
"Chrysophrys sp." = Otolithus (Chrysophris)
"Chrysophrys sp." = Otolithus (Chrysophris) Cuvier 1829 |