Analysis of information sources in references of the Wikipedia article "Allenton hippopotamus" in English language version.
In 1896, the author and Mr R.M. Deeley obtained the greater portion of the skeleton of a hippopotamus, together with part of the breast-bone of an elephant and of the femur of a rhinoceros, in the Derwent gravel at Allenton, immediately to the south of Derby. These bones are now in the Museum at Derby.
...the hippopotamus, Hippopotamus amphibius, and the water buffalo, Bubalus murrensis, present in the Eemian fauna, indicate a climate with relatively high summer temperatures (mean July temperature > 18 °C) and the absence of periods of severe or long-lasting winter frost
