FIG. 15 in Craniodental Morphology And Phylogeny Of Marsupials

FIG. 15. Occlusal views of left upper second molars (M2) of Metachirus nudicaudatus (A, AMNH 266453), Caenolestes fuliginosus (B, UMMZ 155575), Echimipera kalubu (C, AMNH 221654), and Notoryctes typhlops (D, AMNH 198651). General features of upper molar crown morphology discussed in the text are illustrated, as are characters 132, 133, 136, 137, 140, 141, 143, and 144 (see main text for description of these characters and character states), as follows: Metachirus 132(1), 133(0), 136(0), 137(1), 140(3), 141(0), 143(0), 144(0); Caenolestes 132(-), 133(1), 136(2), 137(-), 140(-), 141(0), 143(1), 144(0); Echimipera 132(1), 133(0), 136(0), 137(1), 140(4), 141(0), 143(1), 144(0); Notoryctes 132(1), 133(0), 136(0), 137(2), 140(-), 141(0), 143(0), 144(0). Note, however, that some C. fuliginosus specimens retain a paracone and can be scored as 137(1). Abbreviations: alci, anterolabial cingulum; ccr, centrocrista; mec, metacone; mecl, metaconule; nci, neomorphic cingulum; pac, paracone; prc, protocone; stB, stylar cusp B; stD, stylar cusp D. Teeth are not drawn to the same scale.