East Turkana - Area 130- AKB Squares 0201: Gelasian, Kenya

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Vertebrata indet. Lamarck 1801
345 specimens
Dipnomorpha - Lepidosirenidae
Protopterus sp. Agassiz 1843
89 specimens
Mammalia
Mammalia indet. Linnaeus 1758
144 specimens
Mammalia - Rodentia - Hystricidae
Hystrix sp. Linnaeus 1758
1 specimen
Mammalia - Primates - Cercopithecidae
Theropithecus sp. Geoffroy 1843
7 specimens
Mammalia - Perissodactyla - Equidae
cf. Equidae indet. Gray 1821
4 specimens
Hipparion sp. de Christol 1832
1 specimen
Mammalia - Suidae
Suidae indet. Gray 1821
20 specimens
Kolpochoerus sp. van Hoepen and van Hoepen 1932
3 specimens
Phacochoerus sp. Cuvier 1826
1 specimen
Mammalia - Hippopotamidae
Hippopotamidae indet. Gray 1821
70 specimens
Mammalia - Bovidae
Bovidae indet. Gray 1821
33 specimens
Gazella sp. Blaineville 1816
2 specimens
Alcelaphini indet. Brookes 1876
4 specimens
Damaliscus sp. Sclater and Thomas 1894
1 specimen
Reduncini indet. Knottnerus-Meyer 1907
8 specimens
Kobus sigmoidalis Arambourg 1941
1 specimen
Tragelaphini indet. Blyth 1863
17 specimens
Syncerus sp. Hodgson 1847
1 specimen
Mammalia - Proboscidea - Elephantidae
Elephantidae indet. Gray 1821
2 specimens
Reptilia - Testudines
Testudines indet. Batsch 1788
12 specimens
Reptilia - Testudines - Trionychidae
12 specimens
Reptilia - Testudines
Chelonia indet. (Latreille 1800)
1 specimen
synonym of Testudines
Reptilia
Euthecodon sp. Fortau 1920
39 specimens
Crocodylus indet. Laurenti 1768
496 specimens
Pisces
Pisces indet. Linnaeus 1758
1715 specimens
synonym of Osteichthyes
Actinopteri - Centropomidae
Lates sp. Cuvier 1828
4 specimens
Actinopteri - Siluriformes
Siluriformes indet.
175 specimens
Actinopteri - Siluriformes - Clariidae
Clarias sp. Scopoli 1777
15 specimens
Actinopteri - Siluriformes - Ariidae
? Ariidae indet. Berg 1958
41 specimens
Actinopteri - Siluriformes - Bagridae
Bagrus sp. Bosc 1816
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:

4649ETE 291A. 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]