Also known as Kaswanga; Rusinga Island
Where: Nyanza, Kenya (0.4° S, 34.1° E: paleocoordinates 1.6° S, 32.0° E)
• coordinate stated in text
• small collection-level geographic resolution
When: Fossil Bed Member (Hiwegi Formation), Burdigalian (20.4 - 16.0 Ma)
• Near the base of the Fossil Bed Member
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•K-Ar dates published by Drake et al. (1988) suggested that the Hiwegi For- mation was deposited ~17.9 Ma, and that the entire fossiliferous Rusinga Group sequence (Fig- ure 1) was deposited in less than a half million years. More recent analyses using 40Ar/39Ar dates, magnetostratigraphy, and lithostratgiraphy demon- strate that the fossiliferous strata on Rusinga were deposited over a much longer time interval, between ~17-20 Ma (Peppe et al., 2009; Peppe et al., 2011; McCollum et al., 2012; Peppe et al. 2016; Peppe et al. 2017).
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial; lithology not reported
Size class: macrofossils
Collected in 2011
Collection methods: surface (float), surface (in situ),
• Kenya National Museum collections
Primary reference: J. L. Conrad, K. Jenkins, T. Lehmann, F. K. Manthi, D. J. Peppe, S. Nightingale, A. Cossette, H. M. Dunsworth, W. E. H. Harcourt-Smith and K. P. Mcnulty. 2013. New specimens of ‘Crocodylus’ pigotti (Crocodylidae) from Rusinga Island, Kenya, and generic reallocation of the species. Journal of Vertebrate Paleontology 33(3):629-646 [P. Mannion/P. Mannion]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 144511: authorized by Philip Mannion, entered by Philip Mannion on 08.05.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
| Reptilia | |
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Brochuchus pigotti Tchernov and Van Couvering 1978 crocodile KNM-RU 52950, a partial skull (skull table and braincase) with a partial associated skeleton; KNM-RU 52948, a partial skull (skull table, partial braincase, quadrates, mandibles) with associated vertebrae and osteoderms; RU 2011-829, an articulated series of five dorsal vertebrae; RU 2011-1023, an isolated basioccipital; KNM-RU 52952, a partial skull (jugal, quadrate, mandible) with associated osteoderms, vertebrae (cervicals, dorsals, caudals), and appendicular elements; KNM-RU 52953, a partial skull (quadrate, ectopterygoid, basioccipital, partial maxilla, partial mandible) with associated femur, tibiae, vertebrae, and osteoderms; KNM-RU 52954, a partial skull (quadrate and associated fragments of squamosal and braincase, surangular, articular) with associated vertebrae (including the first sacral) and osteoderms; KNM-RU 52955, a fragmentary skull (including basioccipital and maxilla) and associated vertebrae, osteoderms, and a femur; KNM-RU 52958, an isolated humerus; KNM-RU 52957, a partial skull (skull table, snout, braincase, left quadrate, mandible) and associated vertebrae and numerous osteoderms
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| Mammalia | |
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Proboscidea indet. Illiger 1811 proboscidean | |
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Rodentia indet. Bowdich 1821 rodent
Creodonta indet. Cope 1875 creodont | |
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Tragulidae indet. Milnes-Edwards 1864 chevrotain | |
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Anthracotheriidae indet. Leidy 1869 anthracothere | |
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Chalicotheriidae indet. Gill 1872 chalicothere | |
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Rhinocerotidae indet. Gray 1821 rhinoceros | |