Fig. 2
From: First unambiguous evidence of Multituberculata from the Late Cretaceous of South America
Left M1 of Notopolytheles joelis gen. and sp. nov. in different views. (a) occlusal, (b) radicular, (c) labial, (d) lingual, (e) mesial, (f) distal. The cusps rows are identified as lingual (L), medial (M), and buccal or labial (B), and each cusp is numbered from mesial to distal. Other abbreviations: dl.r: distolingual root, la.r: labial root, m.c.: mesial crest of lingual row, ml.r: mesiolingual root. Scale: 1 mm.
