Fig. 4
From: A Pliocene–Pleistocene continental biota from Venezuela
Stingrays from the Vergel Member. A1–J Potamotrygon sp. (teeth A1–B3 AMU-CURS-868; C1–D3 AMU-CURS-869; E1–F3 AMU-CURS-870; G1–H3 AMU-CURS-871; and caudal spines I, J AMU-CURS-865). K1–K3 Myliobatiformes indet. Views: labial (A1, B1, C1, D1, E1, F1, G1, H1), lingual (B3, D2, H2), occlusal (A2, C2, E2, F3, G2), lateral (A3, C3, D3, E3, G3, H3), basal (B2, F2), ventral (I, J), and indet. (K1–K3)