Features that are in common with the " Thylacinus " genus are the centrocrista is straight on the first upper molar, the angle of the crest at the paracone and metacone is wider than plesiomorphic thylacinidae and the loss of metaconid and further widening of the crests increasing the size of the talonid ( back half of the tooth ).
32.
Muirhead ( 1997 p . 372 ) describes " W . ridei " as having the following features that are unique : parametacrista on the first molar is straight, entoconid either missing of combined with the hypoconid in a more posterior position, the loss or reduction of styler crests, small metaconid, talonid basin reduced by the Ngamalacinus ", and that is the metaconid and protoconid are reduced.
