English: Maxillary teeth of basal sauropodomorphs. A, photograph of the teeth of Leyesaurus marayensis (PVSJ 706), the circle shows fifth maxillary tooth in distal view; B, Cross-sections at mid-height of an anterior maxillary tooth of Leyesaurus PVSJ 706 (a), Adeopapposaurus PVSJ 568 (b), Massospondylus SAM-PK-K1314 (c), and Riojasaurus PVSJ 849 (d). Red lines represent the maximum mesiodistal length and labiolingual width at mid-height of the tooth. Abbreviations: r, ratio between mesiodistal length and labiolingual width. Scale bar equals 2 mm.