Zallah Oasis - Unit 2, Zallah Formation (Eocene of Libya)

Where: Libya (28.8° N, 17.8° E: paleocoordinates 23.6° N, 13.8° E)

• coordinate stated in text

• local area-level geographic resolution

When: Zallah Formation, Bartonian (41.3 - 38.0 Ma)

• The name Zallah Formation was proposed to include the units Tmed El Ksour and Graret ek Jifa members of the Wadi Tamet Formation in Burollet. The Zella Series comprises from bottom to top: 1) marls and sandstones with gypsum intercalations; 2) sandy marls, green glauconitic marls; 3) sandy marls, brecciated, red with phosphatic nodules, and calcareous marl conglomerates; 5) basalts.

• group of beds-level stratigraphic resolution

Environment/lithology: sandy marl and glauconitic, green marl

• No paleoenvironmental data provided.
• Sandy marls, green glauconitic marls

Size class: macrofossils

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 42134: authorized by Austin Hendy, entered by Austin Hendy on 24.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Collection based on taxa listed in text as typical of formation. Includes only mollusca.
Cephalopoda
 Nautilida - Nautilidae
"Nautilus leonei" = Eutrephoceras leonei
"Nautilus leonei" = Eutrephoceras leonei Negri 1934 nautiloid
Bivalvia
 Pectinida - Anomiidae
Carolia placunoides Cantraine 1838 scallop
 Ostreida - Ostreidae
"Ostrea multicostata" = Cubitostrea multicostata Deshayes 1832 oyster
Ostrea reili oyster
Subspecies: Ostrea reili var. abundans
"Ostrea clotbeyi" = Alectryonia clotbeyi Bellardi 1854 oyster
Listed as "Alectryonia (Ostrea) clotbyei". Changed to Ostrea to be consistent within reference.