Extended Data Fig. 2: Dentition of J. kielanae (IVPP V20778).
From: Cretaceous fossil reveals a new pattern in mammalian middle ear evolution
a–c, Left upper cheek teeth (P1 to M2) in lingual (a), occlusal (b) and buccal (c) views. d, e, Right I1 in medial view (d) and lateral view (e). f, g, Right I2 in medial (f) and lateral (g) views. h–j, Right I3 in lingual (h), buccal (i) and posterior (j) views. k, Right upper premolars (P1 to P5) in occlusal view. l, Right upper incisors (I1 to I3) in medial view. m, Right lower molars (M1 and M2) in occlusal view. n, p, Right lower teeth (I1, P2 to M2) in lingual (n) and buccal (p) views. A, anterior; B, buccal; L, lingual; O, occlusal; P, posterior. Scale bars, 0.2 mm.
