“…A number of recent studies have utilised oxygen isotope analysis of herbivore teeth in palaeoclimatological investigations, in order to reconstruct δ 18 O values of past precipitation, mean annual palaeotemperatures and seasonal temperature variations (palaeoseasonality). Studies have included analysis of both the carbonate (CO3) and phosphate (PO4) components of tooth enamel, using a range of different Pleistocene mammals (Arppe and Karhu, 2010;Bernard et al, 2009;Bryant et al, 1996;Bryant et al, 1994;Delgado Huertas et al, 1997;Fabre et al, 2011;Fricke et al, 1998a;Fricke et al, 1998b;Koch et al, 1989;Kovács et al, 2012;Skrzypek et al, 2011;Velivetskaya et al, 2016). The oxygen isotope analysis of small mammals has proven useful in palaeoecological terrestrial contexts, for example, in the Late Eocene (Grimes et al, 2004).…”