Loc. 41 - Gianti Fm: Early Oligocene, Somalia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Pectinida
- Pectinidae
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Chlamys labadyei
(d'Archaic and Haime 1853)
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Nummulitidae
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Heterostegina sp.
d'Orbigny 1826
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Lepidocyclinidae
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| see common names | |||||||
Geography
| Country: | Somalia |
| Coordinates: | 9.5° North, 50.8° East (view map) |
| Paleocoordinates: | 0.6° North, 49.4° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Early Oligocene | ||
| Age range of interval: | 33.9 - 27.3 m.y. ago |
Stratigraphy
| Geological group: | Hafún | Formation: | Gianti | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 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. | |||||
Lithology and environment
| Primary lithology: | lithified sandy "limestone" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Unknown, but presumably limestone. LITHIFICATION: Lithified on the basis of figured specimens from adjacent beds. | |
| Environment: | shallow subtidal indet. |
| Geology comments: ENVIRONMENT: Shallow subtidal carbonate environment. | |
Taphonomy
| Modes of preservation: | body,cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera |
| Collection methods: | field collection |
| Reason for describing collection: | general faunal/floral analysis |
| Collection method comments: COLLECTOR: Unknown. REPOSITORY: Museo dell' Istituto Geologico dell' Universitá di Firenze. | |
| Taxonomic list comments:COVERAGE: Not exhaustive, but limited to characteristic gastropoda, bivalvia, foraminifera, and anthozoa. NOMENCLATURE: Authoritative publication, but with antiquated nomenclature. | |
Metadata
| Database number: | 79038 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-02-23 18:47:57 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | authorizer only | Released: | 2009-02-23 18:47:57 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 26500. | 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] |