Wadi Sudr [Rudeis Formation] (Miocene of Egypt)

Where: Egypt (29.6° N, 32.8° E: paleocoordinates 28.8° N, 31.9° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Rudeis Formation, Middle Miocene (16.0 - 11.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Rudeis Fm, which conformably overlies the Nukhul Fm (Early Miocene) of the Gharandal Group, and is conformably overlain by the Kareem Fm (middle Middle Miocene) of the Ras Malaab Gp. AGE: Rudeis Fm is late Early to early Middle Miocene, but collections are from the upper part of the formation = Middle Miocene, and are found at the FAD of Praeorbulina glomerosa curva and Globorotalia peripheroacuta. STRATIGRAPHIC POSITION: From the upper part of the formation.

• member-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, shelly/skeletal marl

• ENVIRONMENT: Nearshore, shallow marine, fully marine.
• SPECIFIC LITHOLOGY: Thickly bedded marls, with well developed oyster beds. LITHIFICATION: Not lithified on the basis of figured specimens.

Size class: macrofossils

Collected by El-Hedeny

• COLLECTOR: Presumably by the author, M. El-Hedeny, c. 2000. REPOSITORY: Geology Dept., Faculty of Science, Alexandria University.

Primary reference: M. M. El-Hedeny. 2005. Taphonomy and Paleoecology of the Middle Miocene oysters from Wadi Sudr, Gulf of Suez, Egypt. Revue de Paléobiologie, Genéve 24(2):719-733 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 78613: authorized by Austin Hendy, entered by Austin Hendy on 11.02.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Only includes Ostreidae and encrusters. NOMENCLATURE: Not an authoritative publication and with some nomenclatural inconsistency, yet relatively modern, and with species-resolution assignments.
Maxillopoda
 Sessilia - Balanidae
Balanus sp. Da Costa 1778 barnacle
Bivalvia
 Ostreida - Gryphaeidae
Hyotissa virleti Deshayes 1832 oyster
 Ostreida - Ostreidae
Cubitostrea dubertreti Roman 1940 oyster
Cubitostrea digitalina Eichwald 1830 oyster
Crassostrea gryphoides Schlotheim 1813 oyster
Ostrea plicatula Gmelin 1791 oyster
"Ostrea vestitata" = Ostrea vestita Fuchs 1883 oyster
"Cubitostrea frondosa" = Ostrea frondosa de Serres 1829 oyster