Translator Disclaimer
1 May 2017 A Glimpse at the Ectotherms of the Earliest Fauna from the East African Rift (Lokone, Late Oligocene of Kenya)
Olga Otero, Géraldine Garcia, Xavier Valentin, Fabrice Lihoreau, Fredrick K. Manthi, Stéphane Ducrocq
Author Affiliations +
Abstract

We describe here an ichthyological and herpetological assemblage that was obtained from washing-screening sediments from the early late Oligocene locality of Lokone, Kenya. This provides original information on the hitherto oldest known fauna from the East African Rift since it started to open from north to south during the Oligocene. The description of the fossil remains allows the identification of crocodiles (crocodylids), squamates (lacertid and Serpentes), turtles (pelomedusoids cf. Erymnochelys group), dipnoan (?Protopterus sp.), and actinopterygian fishes (Polypterus sp., Heterotis sp., Gymnarchus sp., Hydrocynus sp., Sindacharax sp. and other alestids, a claroteid, a cichlid, possibly a Distichodus, and other indeterminate fish). The preservation of this material testifies to a certain level of hydrodynamism, and the ecology of these ectotherm vertebrates suggests that freshwater environment was developed in this area. Moreover, the assemblage corresponds to herpeto- and ichthyofaunas that prefigured the modern African diversity as early as the Oligocene, before the Miocene invasion by Asian fish. It thus testifies to connections between the newly formed hydrographical system in the Turkana Basin with the Lokone main hydrographical system beginning at a very early stage of the Eastern Rift development.

© by the Society of Vertebrate Paleontology
Olga Otero, Géraldine Garcia, Xavier Valentin, Fabrice Lihoreau, Fredrick K. Manthi, and Stéphane Ducrocq "A Glimpse at the Ectotherms of the Earliest Fauna from the East African Rift (Lokone, Late Oligocene of Kenya)," Journal of Vertebrate Paleontology 37(3), (1 May 2017). https://doi.org/10.1080/02724634.2017.1312691
Received: 12 December 2016; Accepted: 1 February 2017; Published: 1 May 2017
JOURNAL ARTICLE
PAGES


Share
SHARE
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top