Procoptodon browneorum Merrilees, 1968
Taxonomy & Nomenclature
Synonym/s: Sthenurus brownei Merrilees, 1968 (original combination); Simosthenurus browneorum Merrilees, 1968; Simosthenurus brownei Merrilees, 1968
Last record: Late Pleistocene
Provisionally placed in Procoptodon by most authors, it's true taxonomic affinities have not been settled. Subfossil remains have been reported from near Yanchep, Western Australia (Archer, 1972).
Subfossil remains of this species from a 33-27,000 year old layer have been uncovered from Tight Entrance Cave, southwestern Australia. However these may have been worked from older sedimentological levels, and further analysis is need to resolve their true age (Prideaux, 2007:17). There is a record from the nearby Kudjal Yolgah Cave dated to 46ka, which is securely dated. Hence a minimum extinction date of 46ka is established regardless of whether the 33-27ka record is valid or not.
Original scientific description:
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