Loc. 7 - Gianti Fm (Oligocene of Somalia)

Where: Somalia (11.0° N, 51.0° E: paleocoordinates 8.1° N, 45.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Gianti Formation (Hafún Group), Early/Lower Oligocene (33.9 - 28.4 Ma)

• STRATIGRAPHIC RELATIONS: From the Gianti Fm [enterers usage] of the Hafún Series [group?], and presumably regionally overlies the Gheldeis Fm [enterers usage] (Early Oligocene) and is overlain by the Tavo Fm [enterers usage] (Late Oligocene). AGE: Early Oligocene, equivalent to Stampien and middle Nari according to author on the basis of larger formaniferal and molluscan biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within section.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, sandy limestone

• ENVIRONMENT: Shallow subtidal carbonate environment.
• SPECIFIC LITHOLOGY: Arenaceous calcare. 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 78982: authorized by Austin Hendy, entered by Austin Hendy on 20.02.2008

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.
Rotaliina
 Nummulitacea - Nummulitidae
 Orbitoidacea - Lepidocyclinidae
Bivalvia
 Pholadida - Teredinidae
"Kuphus cf. polythalamius" = Kuphus polythalamia
"Kuphus cf. polythalamius" = Kuphus polythalamia Linnaeus 1767 clam
Anthozoa
 Scleractinia - Dendrophylliidae
Dendrophyllia sp. Blainville 1830 stony coral