ammonites
Locherangan (Miocene of Kenya)

Where: Kenya (3.8° N, 35.7° E: paleocoordinates 2.6° N, 33.5° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Burdigalian (20.4 - 16.0 Ma)

• from a "13.5 m" unit at the top of the local sequence

•there is an average K-Ar date of 17.5 +/- 0.3 Ma for five determinations on "two feldspar separates" coming from the "upper tuff" in the sequence, which is "slightly" below the fossiliferous unit

• group of beds-level stratigraphic resolution

Environment/lithology: "channel"; poorly lithified claystone and lithified, conglomeratic sandstone

• the sandstones overly a lacustrine unit but were "deposited by streams"
• "poorly consolidated red-brown claystones that are interbedded with red-brown consolidated conglomeratic sandstones. The fine grained deposits again contain fish bones, and mammal bones were noted in situ in the fine sandstone interbeds"

Size class: macrofossils

Collected by W. Anyonge, F. Brown in 1986, 1987

Collection methods: bulk, surface (float), sieve,

• "All the fossils were recovered from either the surface or from sieving" and "A small test excavation... failed to find additional specimens in situ"

•material is reposited in the KNM (National Museums of Kenya) collection

Primary reference: W. Anyonge. 1991. Fauna from a new Lower Miocene locality west of Lake Turkana, Kenya. Journal of Vertebrate Paleontology 11(3):378-390 [J. Alroy/J. Alroy/J. Alroy] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 83629: authorized by John Alroy, entered by John Alroy on 24.08.2008

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)