Improved model of dilambdodont molars incorporating an anterior component to the previously dorsolingual movement, crescentic crests on the upper ectoloph crests and preprotocrista, and paracone smaller than the metacone, with consequently smaller talonid basin and shorter hypoconid. a: Nomenclature of upper and lower dilambdodont molars, and separate views of the upper and lower dilambdodont models. Lingual (b), posterior (c) and buccal-occlusal (d) views of two upper and two lower model molars.
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