Namurungule Formation loc. SH-53
Basic information
Sample name: Namurungule Formation loc. SH-53
Reference: H. Nakaya, M. Pickford, K. Yasui, and Y. Nakano. 1987. Additional large mammalian fauna from the Namurungule Formation, Samburu Hills, northern Kenya. African Study Monographs, Special Issue 5:79-129 [ER 4036]
Geography
Country: Kenya
Coordinate: 1.69° N, 36.51° E
Coordinate basis: estimated from map
Formation: Namurungule
Time interval: Late Miocene
Ma: 9.52
Age basis: K-Ar
Geography comments: coordinate estimated from the map in Fig. 1
from "the lower member of the Namurungule Formation... correlated with the Turolian of Europe" and dated at 9.57 +/- 0.22 and 9.47 +/- 0.22 Ma based K-Ar sanidine age determinations for pumice beds above and below loc. SH-22, whose stratigraphic relationship so SH-53 is not indicated
from "the lower member of the Namurungule Formation... correlated with the Turolian of Europe" and dated at 9.57 +/- 0.22 and 9.47 +/- 0.22 Ma based K-Ar sanidine age determinations for pumice beds above and below loc. SH-22, whose stratigraphic relationship so SH-53 is not indicated
Environment
Lithology: siliciclastic (mixed)
Habitat comments: the formation's lithology is described as "mud flow deposits, tuff, mud, sand & gravel" by Itaya and Sawada (1987, African Study Monographs)
Methods
Life forms: ungulates
Sample size: 44 specimens
Years: 1984
Sampling comments: this is the best-sampled locality described by the authors
"During 1982 and 1984, the Japan-Kenya Expedition team surveyed the Samburu Hills. Vertebrate fossils were collected from 64 sites, with sites 50 to 64 being added to the 1982 list"
only locality SH-22 was excavated, so all the others must have been surface collected
the specimens are in the National Museums of Kenya
"During 1982 and 1984, the Japan-Kenya Expedition team surveyed the Samburu Hills. Vertebrate fossils were collected from 64 sites, with sites 50 to 64 being added to the 1982 list"
only locality SH-22 was excavated, so all the others must have been surface collected
the specimens are in the National Museums of Kenya
Metadata
Sample number: 4451
Contributor: John Alroy
Enterer: John Alroy
Modifier no: John Alroy
Created: 2024-11-11 12:00:07
Modified: 2024-11-11 12:05:32
Abundance distribution
9 species
1 singleton
total count 44
geometric series index: 15.1
Fisher's α: 3.424
geometric series k: 0.6835
Hurlbert's PIE: 0.7230
Shannon's H: 1.7164
Good's u: 0.9801
Each square represents a species. Square sizes are proportional to counts.
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Register
| Tetralophodon sp. | 2 | |
| Cormohipparion perimense = †Hipparion (Sivalhippus) antelopinum | 6 | |
| Hipparion sitifense = †Sivalhippus turkanensis | 21 | |
| "Hipparion sitifence" | ||
| Paradiceros sp. | 1 | |
| Rhinocerotidae indet. | 2 | |
| medium-sized, not the same as Paradiceros | ||
| †Kenyapotamus coryndoni | 4 | |
| Palaeotragus sp. | 2 | |
| Pachytragus sp. | 3 | |
| Palaeoreas sp. | 3 | |