Dur el Abd Cliffs - Um ad Dahiv Fm (Oligocene of Libya)

Where: Libya (29.7° N, 17.3° E: paleocoordinates 26.7° N, 14.5° E)

• coordinate stated in text

• local area-level geographic resolution

When: Um ad Dahiv Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• It consists of white, grey, and yellow dolomitic limestones with thin beds of light grey clays and gypsum in the middle part. The contacts with the overlying Greir Bu Hascisc Formation (upper Oligocene) and the underlying Wadi Tamet Formation (Eocene) are gradational. Its thickness is 70-80 m (230-262 ft).

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, dolomitic, white, yellow limestone and gypsiferous, gray claystone

• No paleoenvironmental data provided.
• White, grey, and yellow dolomitic limestones with thin beds of light grey clays and gypsum.

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 42141: 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. Include mollusca and foraminifera. Page 284.
Rotaliina
 Nummulitacea - Nummulitidae
Nummulites immedius
Subspecies: Nummulites immedius fichteli
Bivalvia
 Ostreida - Ostreidae
Crassostrea cf. gryphoides Schlotheim 1813 oyster