**2. Material and methods**

The chronostratigraphy follows [9] (Mya): Gelasian (GE) 2.588–1.800 (covering parts of the former Late Pliocene—Early Pleistocene); Calabrian (CA) 1.800–0.774 (Early Pleistocene); Chibanian (CH) 0.770–0.129 (Middle Pleistocene); Upper Pleistocene (UP) 0.129–0.0117 (Late Pleistocene); Greenlandian (GR) 0.0117–0.0082 (Early Holocene); Northgrippian (NO) 0.0082–0.0042 (Middle Holocene); and Meghalayan (ME) 0.0042–0.0001 (Late Holocene). Taxonomy is after [4, 5]. Abbreviations: Mya—million years ago, and Mnts—Mountains.
