Interpretative drawings of teeth and dermal denticles of Late Cretaceous Isurus I. appandiculatus (g-j, l, m, s, t); I. denticulatus (b-f, k, n-p, r, u); I. mantellii (a, q, v) (a) Anterolateral tooth, late Santonian, Weiner Esch/Ochtrup (RE no. 551.763.333 A 3868): (A) labial, (B) lateral, (C) lingual views; (b) anterior tooth, late Turonian, Halle/Westph. (NMB, no. 3916 Foerth-Isurus-1a): (A) labial, (B) lateral, (C) lingual views; (c) lateral tooth, late Turonian, Halle/Westph. (NMB, no. 3916 Foerth-Isurus-1a): (A) labial, (B) lateral, (C) lingual views; (d) lateral tooth, late Cenomanian (C. naviculare zone), Halle/Hesseltal (EZM Diedrich Hes-2), labial view; (e) Lateral tooth, late Cenomanian (C. naviculare Zone), Halle/Hesseltal, (EZM Diedrich Hes-1): (A) labial, (B) lingual views; (f) posterior lateral tooth, late Cenomanian (M. geslinianum zone), Halle/Hesseltal (WMFNM, no. P.-22024): (A) labial, (B) lingual views; (g) anterior tooth, early Cenomanian (M. dixoni zone), Halle/Ascheloh (EZM no. Diedrich Asch-Sel 1): (A) labial, (B) lateral, (C) lingual views; (h) anterior tooth, early Cenomanian (M. dixoni zone), Halle/Ascheloh (EZM no. Diedrich, Asch-Sel 2): (A) labial, (B) lateral, (C) lingual views; (i) lateral tooth, early Cenomanian (M. dixoni zone), Halle/Ascheloh, (EZC no. Diedrich, Asch-Sel 4): (A) labial, (B) lateral, (C) lingual views; (j) anterolateral tooth, early Cenomanian (M. dixoni zone), Halle/Ascheloh (EZM no. Diedrich Asch-Sel 3): (A) labial, (B) lateral, (C). lingual views; (k) symphyseal tooth, late Cenomanian (M. geslinianum Zone), Halle/Hesseltal (WMFNM, no. P.-19918): (A) labial, (B) lateral, (C) lingual views; (l) lateral tooth, Aptian/Albian, Poland (redrawn after [21]) lingual view; (m) Lateral tooth, Aptian/Albian, Poland (redrawn after [21]) lingual view; (n) Dermal denticle type I, late Turonian, Halle/Westph. (NMB, no. 3916 Foerth-Isurus-1a): (A) occlusal, (B) back view, (C) lateral, (D) basal views; (o) dermal denticle type I, late Turonian, Halle/Westph. (NMB, no. 3916 Foerth-Isurus-1a): (A) occlusal, (B) back view, (C) lateral, (D) basal views; (p) dermal denticle type I, late Turonian, Halle/Westph. (NMB, no. 3916 Foerth-Isurus-1a): (A) occlusal, (B) back view, (C) lateral, (D) basal views; (q) Dermal denticle type I without root Niobrara Fm (Coniacian to Campanian), USA: (A) occlusal view; (r) dermal denticle type I, late Cenomanian (M. geslinianum zone), Halle/Hesseltal (WMFNM, no. P.-22048): (A) occlusal, (B) posterior, (C) lateral, (D) basal views; (s) dermal denticle type II, late Turonian, Halle/Westph. (NMB, no. 3916 Foerth-Isurus-1a): (A) occlusal, (B) basal, (C) lateral views; (t) dermal denticle type II, late Turonian, Halle/Westph. (NMB, no. 3916 Foerth-Isurus-1a): (A) occlusal, (B) basal, (C) lateral views; (u) dermal denticle type II, late Cenomanian (M. geslinianum zone), Halle/Hesseltal (WMFNM, no. P.-22037): (A) occlusal, (B) basal, (C) lateral views; (v) dermal denticle type II, Niobrara Fm (Coniacian to Campanian), USA: (A) occlusal, (B) lateral views.