East Turkana - Area 131- Okote- FxJj 20AB (Pleistocene of Kenya)

Where: Kenya (4.2° N, 36.4° E: paleocoordinates 4.1° N, 36.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Okote Member (Koobi Fora Formation), Calabrian (1.8 - 0.8 Ma)

• Maximum age= 1.64 +/- 0.03 Ma (Base of Okote Tuff, K/Ar and Ar/Ar dating);

•Minimum age = 1.4 Ma (Chari Tuff, K/Ar and Ar/Ar dating).

•Datum plane is Conglomeratic sandstone with section extending -12.2 meters below datum plane.

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; poorly lithified, burrowed, bioturbated, pebbly, tuffaceous, sandy, carbonaceous mudstone

• Channel and overbank deposits of a floodplain. Fauna indicates grassland, riverine gallery forest, and marshy or aquatic environments.
• Massive tuffaceous sandy mudstone deposits that represent the onset of floodplain deposition. These sediments grade from finer-grained greyish-brown tuffaceous sandy silts to coarser, plaer-orang tuffaceous sandy silts.

Size class: macrofossils

Collection methods: quarrying, surface (in situ), mechanical, sieve,

• Many bone fragments collected, very few identified. 88 are teeth and tooth fragments.

Primary reference: G. L. Isaac. 1997. Koobi Fora Research Project Volume 5 Plio-Pleistocene Archaeology. [A. Behrensmeyer/S. Cote/S. Cote]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 32088: authorized by Anna Behrensmeyer, entered by Suzanne Cote on 04.06.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

• Taken from Isaac (1997) text on p. 169. Fauna not studied.
Mammalia
 Rodentia - Hystricidae
Hystricidae indet. Fischer de Waldheim 1817 porcupine
 Rodentia - Thryonomyidae
Thryonomys sp. Fitzinger 1867 cane rat
 Primates - Cercopithecidae
cf. Theropithecus sp. Geoffroy 1843 gelada
 Perissodactyla - Rhinocerotidae
Rhinocerotidae indet. Gray 1821 rhinoceros
 Perissodactyla - Equidae
Equidae indet. Gray 1821 horse
 Artiodactyla - Suidae
Suidae indet. Gray 1821 pig
 Artiodactyla - Hippopotamidae
Hippopotamidae indet. Gray 1821 hippopotamus
 Artiodactyla - Bovidae
Bovidae indet. Gray 1821 antelope
Tragelaphini indet. Blyth 1863 antelope
Reptilia
 Testudines -
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle
Aves
  -
Aves indet. Linnaeus 1758 bird