FIG. 17 in Craniodental Morphology And Phylogeny Of Marsupials

FIG. 17. Occlusal views of left upper molars of Distoechurus pennatus (A, AMNH 104058 [M1]), Hypsiprymnodon moschatus (B, AMNH 160120 [M2]), Trichosurus vulpecula (C, AMNH 65547 [M2]), and Lagostrophus fasciatus (D, AMNH 155105 [M2]). General features of upper molar crown morphology discussed in the text are illustrated, as are characters 132, 133, 136, 137, 140, 141, 143, 144, 145, and 146 (see main text for description of these characters and character states), as follows: Distoechurus 132(-), 133(1), 136(2), 137(-), 140(-), 141(0), 143(1), 144(1), 145(0), 146(0); Hypsiprymnodon moschatus 132(-), 133(0), 136(2), 137(-[but note that this can be scored in lightly worn specimens of H. moschatus; see fig. 18A]), (140(-), 141(0), 143(1), 144(1), 145(-), 146(-); Trichosurus vulpecula 132(-), 133(0), 136(2), 137(-), 140(-), 141(0), 143(1), 144(1), 145(0), 146(0); Lagostrophus 132(-), 133(0), 136(2), 137(-), 140(-), 141(0), 143(1), 144(2), 145(1), 146(1). Note that in the illustrated specimen of D. pennatus the neomorphic labial cingulum is restricted to the region between the major labial cusps, but in other specimens it extends along the entire labial margin of the upper molars. Abbreviations: mec, metacone; mecl, metaconule; mel, metaloph; prc, protocone; prl, protoloph; stB, stylar cusp B; stD, stylar cusp D; urcr, urocrista. Teeth are not drawn to the same scale.