East Turkana - Area 130- AKB Squares 0201: Gelasian, Kenya
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Vertebrata indet.
Lamarck 1801
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345 specimens | ||||||
Dipnomorpha
- Lepidosirenidae
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Protopterus sp.
Agassiz 1843
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89 specimens | ||||||
Mammalia
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Mammalia indet.
Linnaeus 1758
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144 specimens | ||||||
Mammalia
- Rodentia
- Hystricidae
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Hystrix sp.
Linnaeus 1758
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1 specimen | ||||||
Mammalia
- Primates
- Cercopithecidae
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Theropithecus sp.
Geoffroy 1843
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7 specimens | ||||||
Mammalia
- Perissodactyla
- Equidae
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cf. Equidae indet.
Gray 1821
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4 specimens | ||||||
Hipparion sp.
de Christol 1832
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1 specimen | ||||||
Mammalia
- Suidae
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Suidae indet.
Gray 1821
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20 specimens | ||||||
Kolpochoerus sp.
van Hoepen and van Hoepen 1932
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3 specimens | ||||||
Phacochoerus sp.
Cuvier 1826
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1 specimen | ||||||
Mammalia
- Hippopotamidae
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Hippopotamidae indet.
Gray 1821
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70 specimens | ||||||
Mammalia
- Bovidae
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Bovidae indet.
Gray 1821
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33 specimens | ||||||
Gazella sp.
Blaineville 1816
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2 specimens | ||||||
Alcelaphini indet.
Brookes 1876
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4 specimens | ||||||
Damaliscus sp.
Sclater and Thomas 1894
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1 specimen | ||||||
Reduncini indet.
Knottnerus-Meyer 1907
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8 specimens | ||||||
Kobus sigmoidalis
Arambourg 1941
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1 specimen | ||||||
Tragelaphini indet.
Blyth 1863
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17 specimens | ||||||
Syncerus sp.
Hodgson 1847
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1 specimen | ||||||
Mammalia
- Proboscidea
- Elephantidae
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Elephantidae indet.
Gray 1821
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2 specimens | ||||||
Reptilia
- Testudines
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Testudines indet.
Batsch 1788
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12 specimens | ||||||
Reptilia
- Testudines
- Trionychidae
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Trionyx sp.
Geoffroy Saint-Hilaire 1809
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12 specimens | ||||||
Reptilia
- Testudines
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Chelonia indet.
(Latreille 1800)
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1 specimen | ||||||
synonym of Testudines | |||||||
Reptilia
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Euthecodon sp.
Fortau 1920
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39 specimens | ||||||
Crocodylus indet.
Laurenti 1768
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496 specimens | ||||||
Pisces
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Pisces indet.
Linnaeus 1758
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1715 specimens | ||||||
synonym of Osteichthyes | |||||||
Actinopteri
- Centropomidae
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Lates sp.
Cuvier 1828
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4 specimens | ||||||
Actinopteri
- Siluriformes
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Siluriformes indet.
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175 specimens | ||||||
Actinopteri
- Siluriformes
- Clariidae
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Clarias sp.
Scopoli 1777
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15 specimens | ||||||
Actinopteri
- Siluriformes
- Ariidae
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? Ariidae indet.
Berg 1958
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41 specimens | ||||||
Actinopteri
- Siluriformes
- Bagridae
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Bagrus sp.
Bosc 1816
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19 specimens | ||||||
see common names |
Geography
Country: | Kenya |
Coordinates: | 4.2° North, 36.4° East (view map) |
Paleocoordinates: | 4.1° North, 36.2° East |
Basis of coordinate: | estimated from map |
Geographic resolution: | outcrop |
Time
Period: | Quaternary | Epoch: | Pleistocene |
Stage: | Gelasian | 10 m.y. bin: | Cenozoic 6 |
*Period: | Late/Upper Tertiary - Late/Upper Tertiary | *Epoch: | Late/Upper Pliocene - Late/Upper Pliocene |
Key time interval: | Gelasian | ||
Age range of interval: | 2.58800 - 1.80600 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Geological group: | Omo | Formation: | Koobi Fora | Member: | Burgi |
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Minimum age= 1.88 Ma (KBS Tuff, K/Ar and Ar/Ar dating).
Maximum age based on faunal and geological data from the Upper Burgi indicating that it is no older than 2.0 Ma Approximately at the same stratigraphi level as KNM-ER 1470 (hominid skull) |
Lithology and environment
Primary lithology: | "cross stratification" poorly lithified silty sandstone | ||
Includes fossils? | Y | ||
Lithology description: Evenly stratified sandy silts, silty clays, and medium-grained flagstone sands. Sands are generally clean and rich in biotite. Coarser, more poorly sorted sediment occurs in laterally restricted lenses.Cross-stratification is often well-developed in the medium- to fine-grained sandstones. | |||
Environment: | fluvial-deltaic indet. | Tectonic setting: | rift |
Geology comments: An actively aggrading margin of the deltaic complex. Lack of evidence for surface exposure and root-bioturbation suggests generally subaqueous conditions. |
Taphonomy
Modes of preservation: | body,original phosphate,replaced with calcite |
Degree of concentration: | dispersed |
Size of fossils: | macrofossils |
Spatial orientation: | random |
Preservation of anatomical detail: | medium |
Articulated whole bodies: | none |
Associated major elements: | none |
Disassociated major elements: | many |
Disassociated minor elements: | many |
Size sorting: | poor |
Fragmentation: | frequent |
Feeding/predation traces: | fractures |
Temporal resolution: | time-averaged |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection excludes: | some macrofossils |
Collection methods: | surface (float),surface (in situ),mechanical,field collection |
Collection size: | 3306 specimens |
Reason for describing collection: | paleoecologic analysis |
Collection method comments: All bone fragments were collected 10 x 10 m squares 20 m apart (on a grid) and sorted into identifiable and unidentifiable at the sampling site. Identifiable fragments were bagged and taken to the Kenya National Museum for identification. "Good" specimens were incorporated into the taxonomic collections at KNM, the rest were stored in the basement of KNM. | |
Taxonomic list comments:Compiled from orginal unpublished data (Behrensmeyer 2003). |
Metadata
Database number: | 32116 | ||
Authorizer: | A. Behrensmeyer | Enterer: | S. Cote |
Modifier: | G. Varnham | Research group: | vertebrate |
Subset of collection #: | 21503 | ||
Created: | 2003-06-05 08:28:27 | Last modified: | 2022-04-05 04:41:23 |
Access level: | the public | Released: | 2003-06-05 08:28:27 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
8639. | ETE | A. K. Behrensmeyer. 1975. The Taphonomy and Paleoecology of Plio-Pleistocene Vertebrate Assemblages East of Lake Rudolf, Kenya. Bulletin of the Museum of Comparative Zoology 146(10):473-578 [A. Behrensmeyer/S. Cote/S. Cote] |
Secondary references:
4649 | ETE 291 | A. K. Behrensmeyer. 1976. Lothagam Hill, Kanapoi, and Ekora: A General Summary of Stratigraphy and Faunas. In: Y. Coppens et al. (eds.), Earliest Man and Environments in Lake Rudolf Basin, University of Chicago Press, Chicago 163-170 [A. Behrensmeyer/A. Behrensmeyer/M. Kosnik] |