FIGURE 1. Right upper molar rows (M1-3) of three representative sparassodonts in occlusal view: (A) Patene coluapiensis (AMNH 28448); (B) Sipalocyon gracilis (AMNH 9254, left reversed), and (C) Cladosictis patagonica (MACN-A 5950), showing how the teeth at a certain position in the tooth row (tooth locus) in one taxon can resemble a different tooth position in another taxon (e.g., the M3 of C. patagonica resembles both the M2 of Sipalocyon gracilis and the M1 of Patene coluapiensis). Anterior is to the right in all images. Scales equal 5 mm.

Published as part of Engelman, Russell K. & Croft, Darin A., 2022, Identifying tooth position of isolated teeth of sparassodonts (Mammalia: Metatheria) using geometric morphometrics, pp. 1-30 in Palaeontologia Electronica (a8) 25 (1) on page 3, DOI: 10.26879/1111, http://zenodo.org/record/12656375