Loc. 64 - Gheldeis Fm: Early/Lower Oligocene, Somalia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Glycymerididae
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Pectunculus sp.
Lamarck 1799
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| synonym of Glycymeris | |||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea sp.
Linnaeus 1758
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Bivalvia
- Pectinida
- Spondylidae
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Spondylus mucronatus
Azzaroli 1958
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Bivalvia
- Carditida
- Carditidae
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Cardita rovereti
Vredenburg 1928
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| recombined as Glans rovereti | |||||||
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Bivalvia
- Lucinida
- Lucinidae
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Lucina sp.
Bruguière 1797
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Bivalvia
- Pholadida
- Teredinidae
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Kuphus cf. polythalamius
(Linnaeus 1767)
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| recombined as Kuphus polythalamia | |||||||
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Bivalvia
- Cardiida
- Cardiidae
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Cardium sindiense
(Vredenburg 1928)
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| original and current combination Cardium (Trachycardium) sindiense | |||||||
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Bivalvia
- Cardiida
- Veneridae
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Venus aglaurae
Brongniart 1823
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| recombined as Antigona aglaurae | |||||||
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Gastropoda
- Cerithiidae
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Cerithium sp.
Bruguière 1789
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Cerithium naricum
Vredenburg 1925
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| recombined as Bellatara narica | |||||||
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Gastropoda
- Eocypraeidae
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Cypraea subexcisa
Braun 1840
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| recombined as Apiocypraea subexcisa | |||||||
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Gastropoda
- Neogastropoda
- Nassariidae
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Fusus sp.
Bruguière 1789
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Gastropoda
- Neogastropoda
- Olividae
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Oliva sp.
Bruguière 1789
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Gastropoda
- Neogastropoda
- Conidae
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Conus ineditus
Michelotti 1861
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| recombined as Conus (Lithoconus) ineditus | |||||||
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Conus carcarensis
(Sacco 1893)
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Gastropoda
- Neogastropoda
- Muricidae
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Murex sp.
Linnaeus 1758
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Gastropoda
- Strombidae
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Strombus radix
(Brongniart 1823)
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| recombined as Persististrombus radix | |||||||
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Gastropoda
- Cassidae
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Cassis retusa
Michelotti 1861
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Cassis nummulitiphila
(Sacco 1890)
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Cassidaria sp.
Lamarck 1816
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| synonym of Galeodea | |||||||
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Gastropoda
- Xenophoridae
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Xenophora cumulans
(Brongniart 1823)
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| recombined as Xenophora cummulans | |||||||
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Gastropoda
- Ampullinidae
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Ampullospira oweni
(d'Archiac and Haime 1854)
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| recombined as Pachycrommium oweni | |||||||
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Ampullonatica sp.
Sacco 1890
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Nummulitidae
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Nummulites intermedius
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| see common names | |||||||
Geography
| Country: | Somalia |
| Coordinates: | 9.2° North, 50.7° East (view map) |
| Paleocoordinates: | 6.3° North, 45.5° East |
| 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/Lower Oligocene | ||
| Age range of interval: | 33.90000 - 27.82000 m.y. ago |
Stratigraphy
| Geological group: | Hafún | Formation: | Gheldeis | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Gheldeis Fm [enterers usage] of the Hafún Series [group?], and presumably regionally overlies Late Eocene strata and is overlain by the Gianti Fm [enterers usage] (Early 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 "limestone" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Calcari marnosi. 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: Not stated. 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: | 79048 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-02-23 19:11:51 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2009-02-23 19:11:51 |
| Creative Commons license: | CC BY |
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] |