Gumba Red Beds (Miocene of Kenya)

Also known as Gumba Peninsula; Rusinga Island

Where: Nyanza, Kenya (0.4° S, 34.1° E: paleocoordinates 1.6° S, 32.0° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Burdigalian (20.4 - 16.0 Ma)

• "Early Miocene"

•

•Gumba beds are likely between ~19–17Ma (Drake et al., 1988; Forbes et al. 2004; Geraads et al. 2016)

• member-level stratigraphic resolution

Environment/lithology: "floodplain"; fine-grained, hematitic siliciclastic sediments

• "riverine flood basin deposits"
• "highly oxidized, fine-grained" deposits

Size class: macrofossils

Collection methods: Kenya National Museum collection

Primary reference: E. Tchernov and J. Van Couvering. 1978. New crocodiles from the Early Miocene of Kenya. Palaeontology 21(4):857-867 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92703: authorized by John Alroy, entered by John Alroy on 24.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Unionida - Etheriidae
Etheria sp.
Etheria sp. Lamarck 1807 clam
Osteichthyes
 Ceratodontiformes - Lepidosirenidae
Protopterus sp.
Protopterus sp. Agassiz 1843 african lungfish
Reptilia
 Crocodylia - Crocodylidae
Crocodylus sp., cf. Euthecodon sp.
Crocodylus sp. Laurenti 1768 crocodile
"possibly C. pigotti but about half as large again" - jaw and tooth fragements
cf. Euthecodon sp. Fortau 1920 crocodile
KNM-RU 2585 (fragment of dentary)
Actinopteri
 Acanthomorphata - Centropomidae
Lates sp.
Lates sp. Cuvier 1828 lates
Cladistia
 Polypteriformes - Polypteridae
Polypterus sp.
Polypterus sp. Lacépède 1803 bichir