Also known as Napak I, IV, V, IX, X

Where: Uganda (2.1° N, 34.2° E: paleocoordinates 1.7° N, 32.1° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Burdigalian (20.4 - 16.0 Ma)

• "localities I, IV, V, and IX are intercalated with volcanic tuffs... and biotites from these tuffs at Napak I have produced dates of 19.5 +/- 2 Ma and 18.3 +/- 0.4 Ma" after being "adjusted for new constants" but "the younger date is discrepantly low" so an age of "between 19 and 20 Ma" (i.e., Burdigalian) is favored (Rossie and MacLatchy 2006)

• member-level stratigraphic resolution

Environment/lithology: "floodplain"; lithology not reported

Size classes: macrofossils, mesofossils

Collected by W. W. Bishop in 1958 - 1964

• Includes subcollections:I, IV, V, IX, X

Primary reference: W. W. Bishop and J. D. Clark. 1965. Background to Evolution in Africa. University of Chicago Press, Chicago [A. Behrensmeyer/A. Behrensmeyer/M. Kosnik]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 28441: authorized by John Alroy, entered by Jill Wertheim on 13.02.2003, edited by John Alroy, Mark Uhen and Patricia Holroyd

Creative Commons license: CC BY (attribution)