ammonites
East Turkana - Area 105- KBS- FxJj3 (Pleistocene of Kenya)

Also known as Hippo and Artifact Site (HAS)

Where: Kenya (4.1° N, 36.4° E: paleocoordinates 4.0° N, 36.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: KBS Member (Koobi Fora Formation), Early/Lower Pleistocene (2.6 - 0.8 Ma)

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

•Maximum age= 1.88 +/- 0.02 Ma (KBS Tuff andd Ar/Ar dating)

•Datum plane is the Limonite Clast Conglomerate (LCC)

• bed-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; poorly lithified, bioturbated, tuffaceous, sandy mudstone and poorly lithified claystone

• Sedimentary environment 2 is a levee. Paleosol. Prograding delta, floodplain crossed by small channels. Environment is reconstructed as a mixture of open grassland and reed swamp with bush and riparian gallery forest and a seasonal climatic regime.

Size class: macrofossils

Preservation: original phosphate, replaced with calcite

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

• Archaeological protocols of G. Issac were followed in excavation and surface collection.

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

Purpose of describing collection: taphonomic analysis

PaleoDB collection 32053: authorized by Kay Behrensmeyer, entered by Suzanne Cote on 03.06.2003