FIGURE A2 in Abelisauridae (Dinosauria: Theropoda) from the Late Jurassic of Portugal and dentition-based phylogeny as a contribution for the identification of isolated theropod teeth

FIGURE A2. States of dentition-based characters. A. Fourth right premaxillary tooth of Eoraptor lunensis (PVSJ 512) in lateral view lacking a mesial carina (char. 43:0), displaying a concave area present on the labial side of the crown and adjacent to the distal carina (char. 42:1), and having an important constriction between root and crown at both mesial and distal margins (char. 35:1), giving a lanceolate shape to one of the premaxillary teeth (char. 34:0). B. First and second left premaxillary teeth of Dubreuillosaurus valesdunensis (MNHN 1998-13) in anterior (B1) and palatal (B3) views, and second left premaxillary tooth in posterior view (B2) showing a non-twisted (char. 46:0) mesial carina, facing labially (char. 47:1) and terminating wellabove the cervix (char. 50:0), as well as a distal carina facing distally (char. 48:0). The axis passing through both carinae at midcrown in Dubreuillosaurus mesialmost teeth is subparallel to long axis of the skull (char. 49:0). The distal carinae, designated by the green arrows, are centrally positioned on the crown and not displaced labially. C. Premaxillary teeth of Raptorex kriegsteini (LH PV18) in medial (C1) and palatal (C2) views showing the U-shaped outline of mesialmost crowns (char. 41:5), the concave area adjacent to both carinae (char. 42:2), the mesial and distal carinae facing lingually (char. 47:3; char. 48:2), and the axis passing through both carinae at mid-crown in mesialmost teeth that is perpendicular to long axis of skull (char. 49:2). D. Right premaxilla of Majungasaurus crenatissimus (FMNH PR 2100) in palatal view displaying the subrectangular alveoli (char. 13:1), a 'flying-saucer'-shaped outline of the mesialmost teeth (char. 41:2), a concave area present on the lingual side of the crown and adjacent to both carina (char. 42:2), a non-twisted mesial carina (char. 46:0) facing mesially (char. 47:0), a distal carina facing distally (char. 48:0), and an axis passing through both carinae at mid-crown in mesialmost teeth medio-laterally oriented from long axis of skull (char. 49:1). E. First premaxillary tooth of Acrocanthosaurus atokensis (NCSM 14345) in anterior (E1) and posterior (E2) views and premaxillary teeth in palatal view (E3) showing the oval alveoli (char. 13:0), and the mesial carina facing labially (char. 47.1) and terminating well-above the cervix (char. 50:0). Unlike Dubreuillosaurus valesdunensis, the distal carina, pointed by the green arrows, is here strongly displaced labially (char. 48:1). F. Isolated premaxillary crown of Dromaeosaurus albertensis (AMNH 5356) in lingual (F1) and distal (F2) views showing the concave area on the lingual side of the crown and adjacent to the mesial carina only (char. 42:3), and the strongly twisted mesial carina (char. 46:1) terminating at the level of the cervix (char. 50:1). Like Acrocanthosaurus, the distal carina, designated by the green arrow, is strongly displaced labially (char. 48:1). G. Isolated lateral tooth of Carcharodontosaurus saharicus (UC PV6) in lingual (G1), mesial (G2) and labial (G3) views showing the weak constriction between root and crown at the lateral margin (char. 64:2), the weakly sigmoid distal profile of the crown due to the convex apical half of the tooth (char. 68:3), the pronounced and well-visible marginal undulations (char. 112:1) adjacent to both carinae (char. 113:2), and the mesial carina terminating well beneath the cervix (char. 80:2) and extending further basally than the distal carina (char. 79:1; the basal extension of carinae are represented by green bars). H. Lateral teeth of Genyodectes serus (MLP 26-39) in linguodistal (H1) and apical (H2) views showing the concave surface adjacent to the distal carina (char. 71:1) and the wide mesiodistally concave area on the basal part of the labial margin of the crown and giving a bean-shape outline of the cross-section (char. 72:2). I. Tenth left maxillary tooth of Rugops primus (MNN IGU1) in labial views showing the slightly concave, roughly straight distal margin of the crown (char. 68:1), the apically hooked denticles on the distal carina (char. 88:2), and the parabolic margin of apical denticles on the mesial carina (char. 89:1), having a vertical subrectangular shape (char. 91:0). J. Maxillary tooth of Irritator challengeri (SMNS 58022) in labial view showing the convex, almost straight mesial (char. 69:1) and distal (char. 68:2) margins of the crown. K. Mid-crown denticles on the distal carina of the first left maxillary crown of Erectopus superbus (MNHN 2001-4) in lateral view showing the narrow interdenticular space (char. 103:0), and the short interdenticular sulci (char. 105:1) in between the denticles. L. Mid-crown denticles on the distal carina of the height right maxillary tooth of Tyrannosaurus rex (FMNH PR 2081) in laterodistal view showing the broad interdenticular space (char. 103:1) and the welldeveloped interdenticular sulci (char. 105:2) in between the denticles. M. Mid-crown denticles on the distal carina of the third right maxillary tooth of Majungasaurus crenatissimus (FMNH PR 2278) in lateral view showing the apically hooked denticles (char. 88:2), the narrow interdenticular space (char. 103:0), and the well-developed interdenticular sulci (char. 105:2).