Bed D - Wadi Tavo-tavo [Tavo Fm] (Oligocene of Somalia)

Also known as Loc. 9

Where: Somalia (11.0° N, 51.0° E: paleocoordinates 9.3° N, 47.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tavo Formation (Hafún Group), Late/Upper Oligocene (28.4 - 23.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Tavo Fm [enterers usage] of the Hafún Series [group?] of Late Oligocene, and presumably regionally overlies the Gianti Fm [enterers usage] (Early Oligocene) and is overlain by the Ghibirti Fm [enterers usage] (Early Miocene). THICKNESS: Difficult to ascertain, but a bed of not great thickness. AGE: Late Oligocene, equivalent to Chattian and upper Nari according to author on the basis of larger formaniferal and molluscan biostratigraphy. STRATIGRAPHIC POSITION: From Bed D, near base of section.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, shelly/skeletal limestone

• ENVIRONMENT: Shallow subtidal carbonate environment.
• SPECIFIC LITHOLOGY: Calcari organogeni teneri. LITHIFICATION: Lithified on the basis of figured specimens from adjacent beds.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Facca & Marchesini in 1938-1939

• COLLECTOR: Collected by G. Facca and E. Marchesini, 1938-1939. REPOSITORY: Museo dell' Istituto Geologico dell' Universitá di Firenze.

Primary reference: A. Azzaroli. 1958. L'Oligocene e il Miocene della Somalia. Stratigrafia, Tettonica, Paleontologia (Macroforaminferi, Coralli, Molluschi). Palaeontolographia Italica 52:1-142 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 78836: authorized by Austin Hendy, entered by Austin Hendy on 18.02.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not exhaustive, but limited to characteristic gastropoda, bivalvia, foraminifera, and anthozoa. NOMENCLATURE: Authoritative publication, but with antiquated nomenclature.
Anthozoa
 Scleractinia - Poritidae
Porites minuta Reuss 1868 stony coral
 Scleractinia - Dendrophylliidae
Dendrophyllia sp. Blainville 1830 stony coral
Gastropoda
 Sorbeoconcha - Strombidae
Strombus sp. Linnaeus 1758 conch
Bivalvia
 Pholadida - Teredinidae
"Kuphus cf. polythalamius" = Kuphus polythalamia
"Kuphus cf. polythalamius" = Kuphus polythalamia Linnaeus 1767 clam
 Ostreida - Ostreidae
Ostrea subangulata d'Orbigny 1852 oyster