RECORDS OF THE WESTERN AUSTRALIAN MUSEUM 34 001–030 (2019) DOI: 10.18195/issn.0312-3162.34(1).2019.001-030 An experimental investigation of differential recovery of native rodent remains from Australian palaeontological and archaeological deposits Alexander Baynes1*, Cassia J. Piper2,3 and Kailah M. Thorn2,4 1 Research Associate, Department of Earth and Planetary Sciences, Western Australian Museum, Locked Bag 49, Welshpool DC, Western Australia 6986, Australia. 2 School of Animal Biology, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia. 3 Western Australian Museum, Locked Bag 49, Welshpool DC, Western Australia 6986, Australia. 4 College of Science & Engineering, Flinders University, Bedford Park, South Australia 5042, Australia. * Corresponding author:
[email protected] ABSTRACT – Quaternary palaeontologists are often asked to identify and interpret faunal remains from archaeological excavations. It is therefore vital that both palaeontologists and archaeologists understand the limitations imposed by recovery methods, especially sieves. Fossil small mammals, particularly rodents, in Australian archaeological deposits are very significant sources of palaeoenvironmental information. Over the last half century, recovery techniques used by archaeologists in Australia have ranged from dry screening with 10 mm sieves to wet screening with nested sieves graded down to 1 mm. Nested 6 and 3 mm sieves have been a popular combination. Experimental investigations, using owl-accumulated mammal remains from two caves, show that sieves of 2 or even 3 mm (the metric equivalent of 1/8th inch) are fine enough to recover most of the dissociated complete jaw bones used to identify Australian native rodents (all Muridae). But they fail to retain first molar teeth that have become dissociated from the jaws by pre-depositional fragmentation, predator digestion or damage during excavation.