Fig. 2: The δ13C and δ18O values from the tooth enamel of fossil fauna from GFT-4.2.

The isotopic data for M. cf. sylvanus have been previously published in ref. 28. Each point corresponds to a tooth enamel sample with a total of 168. Silhouettes from PhyloPic (http://phylopic.org). Tragelaphini, Suinae, S. africanus, Dinofelis sp., and Hyaenidae are under the public domain. Canidae (by Sam Fraser-Smith, vectorised by T. Michael Keesey), M. cf. sylvanus (by Kai R. Caspar), Hexaprotodon sp. and Hipparion s. l. (by Zimices), and Gazella sp. (by Rebecca Groom) are licensed under Attribution 3.0 Unported (https://creativecommons.org/licenses/by/3.0/). Anancus sp. (by Henry Fairfield Osborn, vectorised by Zimices) is licensed under Attribution-ShareAlike 3.0 Unported (https://creativecommons.org/licenses/by-sa/3.0/). Source data are provided as a Source Data file.