Unlike in many other rice rats, including " Handleyomys alfaroi " and " Euryoryzomys " species, the mesoflexus on the second upper molar, which separates the paracone ( one of the main cusps ) from the mesoloph ( an accessory crest ), is not divided in two by an enamel bridge.
22.
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 ).
23.
As in this species, but unlike in many other rice rats, including " H . alfaroi " and " E . nitidus ", the mesoflexus on the second upper molar, which separates the paracone ( one of the main cusps ) from the mesoloph ( an accessory crest ), is not divided in two by an enamel bridge.
