KI5: Late/Upper Miocene, Uganda
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Osteolamus tetraspis
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1 specimen | |||||||||
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= Osteolaemus cf. tetraspis
Cope 1861
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Pickford 1994 | |||||||||
| misspelling Osteolaemus tetraspes | ||||||||||
| KI 27'91 (left mandibular symphysis) | ||||||||||
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Mammalia
- Proboscidea
- Elephantidae
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Stegotetrabelodon sp.
Petrocchi 1941
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1 specimen | |||||||||
| ETE number of identifiable specimens; species: primitive | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Uganda |
| Coordinates: | 1.0° North, 30.5° East (view map) |
| Paleocoordinates: | 0.7° North, 29.9° East |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| *Period: | Tertiary - Tertiary | *Epoch: | Miocene - Miocene |
| Key time interval: | Late/Upper Miocene | ||
| Age range of interval: | 11.63000 - 5.33300 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Albertine | Formation: | Kakara | ||
| Stratigraphy comments: ETE dating method: time_unit, ETE age comment: "Kakara fm.=range~12 to ~9 Ma, based on biostrat comp of fauna"
Lukaye et al. 2016: Greatly conflicting ages of early middle Miocene [14] and late Pliocene [13] have been suggested on the basis of palynomorph assemblages in the Turaco wells. In surface exposures, Pickford et al. [2] and Van Damme and Pickford [17] suggest Late Miocene age on the basis of molluscs associations and mammalian fossils. | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Lithology description: ETE rock type adj: 0, ETE lithology comments: cly/slt/ironst Lukaye et al. 2016: Log patterns in the Turaco-3 well suggest a coarsening and shallowing upwards sequence. The section’s lowermost 57 m display coarsening upward rhythms, followed by a 185 m thick sandy section with erratic gamma ray response. This is then followed by 166 m with repetitive coarsening upward rhythms, and then 20 m of lacustrine shales. The formation is topped by interbedded sands and shales with a thickness of 104 m. In natural exposures, the much thinner 40 m development of the formation is developed as a dominantly dark claystone, with well-defined, mainly laterally continuous, thin ferruginous coarse sandstone beds. The formation’s top in exposures is marked by a 40-50 cm thick bench of conglomeratic polymictic ferruginous sandstones. | |
| Environment: | fluvial indet. |
| Geology comments: ETE sed env 1: fluvial, ETE sed env 2: . ETE event: ., ETE env comment: shallow-water floodplain
Lukaye et al. 2016: The bulk of the Kakara Formation’s exposed section was deposited on a coastal plain, with the intermittent coarse ferruginous sandstones introduced by crevasse splay from nearby channels; these channels are represented by the sandstone development of the new road-cut exposure. Increasing nearshore lacustrine interbeds in the upper parts of the formation were however noted by Roller et al. [9]. The thick Turaco section suggests a development which introduced coarse deltaic clastics into the basin. Palynofacies associations suggest a shift from more open lacustrine to nearshore environments about 200 m above formational base [14] or the development of humid fan delta/mouth bar deposits throughout [13]. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk |
| Collection size: | 2 specimens |
| Reason for describing collection: | general faunal/floral analysis |
| Collection method comments: ETE Size: macro; ETE reference list: 926, ; ETE museum list: | |
Metadata
| Also known as: | ETE Locality 1268, Kisegi, KI5, | ||
| Database number: | 22444 | ||
| Authorizer: | A. Behrensmeyer, P. Mannion | Enterer: | A. Behrensmeyer, P. Mannion |
| Modifier: | G. Varnham | Research group: | paleobotany,vertebrate |
| Created: | 1999-08-23 00:00:00 | Last modified: | 2022-02-02 04:39:49 |
| Access level: | the public | Released: | 1999-08-23 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 5430. | ETE 1160 | P. Tassy. 1994. Fossil proboscideans,Mammalia, from the Western Rift,Uganda. In:Geol. and palaeo. of the Albertine rift valley II:217-257 [A. Behrensmeyer/A. Behrensmeyer/M. Kosnik] |
Secondary references:
| 79448 | J. Lukaye, D. Worsley, L. Kiconco, P. Nabbanja, D. Abeinomugisha, C. Amusugut, N. Njabire, R. Nuwagaba, F. Mugisha, T. Ddungu, T. Sserubiri and V. Sempala. 2016. Developing a Coherent Stratigraphic Scheme of the Albertine Graben-East, Africa. Journal of Earth Science and Engineering 6:264-294 [P. Mannion/G. Varnham/G. Varnham] | |
| 47091 | M. Pickford. 1994. Late Cenozoic crocodiles (Reptilia: Crocodylidae) from the Western Rift, Uganda. In B. Senut, M. Pickford (eds.), Geology and Palaeobiology of the Albertine Rift Valley, Uganda−Zaire, Vol. II: Palaeobiology 137-155 [P. Mannion/P. Mannion] |