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A–B, Pectinator spekei, C–D, Ctenodactylus gundi, E–F, Felovia vae and G–H, Massoutiera mzabi. Ln: measurements for right lower dentition; Un: measurements for right upper dentition, SL: Skull length. Red, green and violet areas show the evolution of M1, M2 and M3 length respectively, compared to skull length.
