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Figure 2. Measurements for each studied postcranial element. A, B in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 2. Measurements for each studied postcranial element. A, B, unciform in (A) dorsal and (B) lateral view. C, lateral view of the pyramidal. D, E, radius in (D) distal and (E) cranial views. F–H, tibia in (F) proximal, (G) cranial, and (H) distal views. I, caudal view of femur. J, K, idealized metapodial in (J) dorsal and (K) medial views. L–N, pisiform in (L) palmar, (M) lateral, and (N) medial views. O, lateral view of the hemimandible. P–R, cuboid in (P) proximal, (Q) plantar, and (R) distal views. S, T, calcaneus in (S) dorsal and (T) distal views. U, V, navicular in (U) proximal and (V) medial views. W, X, talus in (W) plantar and (X) distal views. Y, Z, ectocuneiform in (Y) distal and (Z) lateral and dorsal views. Abbreviations: dl, craniocaudal length of the distal epiphysis of the long bones and metapodials, and craniocaudal length of the distal facet in the pisiform, calcaneus, talus, cuboid, and ectocuneiform; dw, mediolateral width of the distal epiphysis of the long bones and metapodials, and mediolateral width of the distal facet in the pisiform, calcaneus, talus, cuboid, and ectocuneiform; h, dorsopalmar/plantar height of the unciform, navicular, cuboid, and cuneiforms; hac, height from the cranioventral edge of the angular process to the dorsal edge of the condylar process; hmr, height from the cranioventral edge of angular process to the dorsal edge of the coronoid process; mcl, mandibular length from the mesial border of the incisors to the caudal border of the coronoid process; ml, maximum mandibular length; mw, mediolateral width in the centre of the long bones and metapodials; pl, craniocaudal length of the proximal epiphysis of the long bones and metapodials, and craniocaudal length of the proximal facet in the cuboid; pw, mediolateral width of the proximal epiphysis of the long bones and metapodials, and mediolateral width of the proximal facet of the cuboid; tl, maximum length; tul, maximum length of tuber calcanei, tubercle of the pisiform, and talus head; tuw, width of the tuber calcanei, tubercle of the pisiform, and talus head; w, width of the unciform, pyramidal, navicular, and cuneiforms.

Figure 1 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 1. Schematic geological map of the northern part of the Teruel basin, showing the location of most of the known paleontological localities, including La Roma 2 (modified from Salesa et al., 2012). Abbreviations: ALF, Alfambra; ALJ, Los Aljezares; ARQ, El Arquillo; BUN, Búnker de Valdecebro; CAP2, El Capón-2; CAP3, El Capón-3; CAT, La Cantera; CC, Condud; CC2/3, Concud 2 and 3; GL, La Gloria 4 and 5; GLO, La Gloria 6, 14A and 14B; GLO/AG, other La Gloria and Los Aguanaces localities; KS, Las Casiones; LM, Los Mansuetos; MB, Masía del Barbo; MDV, Masada del Valle; MIL, Milagros; MNT, Montalvos; MOD, Modorras; MRU, Masada Roya; PER, Peralejos; PM, Puente Minero; SAL, La Salle; TO, Tortajada; VB, Villalba Baja; VDC, Valdecebro; VIP, Vivero de Pinos.

Figure 9 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 9. Bones of the caudal extremity of Teruelictis riparius from La Roma 2. A, B, RO-4739, baculum in (A) left and (B) right views. C, D, RO-4707, fragment of left coxal in (C) medial and (D) lateral views. E–G, RO-4689, right femur in (E) cranial, (F) lateral, and (G) caudal views. H–J, RO-4943 and RO-4721, almost complete left tibia in (H) cranial, (I) caudal, and (J) craniolateral views.

Figure 14 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 14. Comparison between right femora (A–E) and left tibiae (F–J) of Teruelictis riparius from La Roma 2 and extant otters, in cranial view. A, F, Lutra lutra. B, G, Lontra canadensis. C, H, Aonyx cinereus. D, I, Martes martes. E, J, Teruelictis riparius.

Figure 4 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 4. Skull and mandible of Teruelictis riparius from La Roma 2. A, RO-4937, skull in ventral view. B–D, RO-4744, right hemimandible with first lower incisor to second lower molar in (B) lingual, (C) buccal, and (D) occlusal views.

Figure 5 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 5. Vertebrae of Teruelictis riparius from La Roma 2. A, B, RO-4712, lumbar vertebra in (A) lateral and (B) dorsal views. C, D, RO-4573, proximal caudal vertebra in (C) ventral and (D) lateral views. E, F, RO-4734, middle caudal vertebra in (E) dorsal and (F) ventral views.

Figure 12 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 12. Selected phalanges of Teruelictis riparius from La Roma 2. A, B, RO-4564, proximal phalanx in (A) dorsal and (B) palmar/plantar views. C, D, RO-4601, middle phalanx in (C) dorsal and (D) palmar/plantar views. E, F, RO-4697, middle phalanx in (E) dorsal and (F) palmar/plantar views. G, H, RO-4615, proximal phalanx in (G) dorsal and (H) palmar/plantar views. I, J, RO-4518, distal phalanx in lateral views. K, L, RO-4520, proximal phalanx of the right pollex in (K) dorsal and (L) palmar views. M, N, RO-4767, distal phalanx in lateral views.

Figure 8 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 8. Metacarpals (Mcs) of Teruelictis riparius from La Roma 2. A–C, RO-4741, left Mc II in (A) dorsal, (B) medial, and (C) lateral views. D–F, RO-4742, left Mc III in (D) dorsal, (E) medial, and (F) lateral views. G–I, RO-4773, left Mc IV in (G) dorsal, (H) medial, and (I) lateral views. J–L, RO-4774, left Mc V in (J) dorsal, (K) medial, and (L) lateral views.

Figure 13 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 13. Comparison between the lower dentition of Teruelictis riparius and Paralutra jaegeri. A, B, detailed view of the right hemimandible RO-4744 of Teruelictis riparius from La Roma 2 showing lower fourth premolar (p4) and lower first molar (m1) in (A) occlusal and (B) buccal views. C, D, reversed view of a cast of the fragment of hemimandible of Par. jaegeri from Pellecahus described by Roman & Viret (1934), in (C) occlusal and (D) buccal views. E, F, reversed view of a cast of the specimen MHNL no. Lgr 1296 of Par. jaegeri from La Grive Saint-Alban (France) in (E) occlusal and (F) buccal views. G, H, SMNS 16813, right m1 of Par. jaegeri from Steinheim (Germany) in (G) occlusal and (H) buccal views.

Figure 16 in A non-aquatic otter (Mammalia, Carnivora, Mustelidae) from the Late Miocene (Vallesian, MN 10) of La Roma 2 (Alfambra, Teruel, Spain): systematics and functional anatomy

Figure 16. Comparison between right talii of Teruelictis riparius from La Roma 2 and extant Mustelidae shown at the same size, in (A–E) plantar and (F–J) dorsal views. A, F, Teruelictis riparius. B, G, Gulo gulo. C, H, Meles meles. D, I, Aonyx cinereus. E, J, Lutra lutra.

Figure 35 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 35. Heterodontosaurus. Attempted reconstruction of some of the principal adductor musculature. A, M. adductor mandibulae externus posterior (MAMEP) attaching to a presumed bodenaponeurosis on the apex of the coronoid bone; M. adductor mandibulae posterior (MAMP) restored in its most probable position. B, M. pseudotemporalis (MPS) shown inserting on the presumed coronoid bodenaponeurosis. M. pterygoideus posterior (MPTP) originating on the posteroventral surface of the pterygoid, and shown inserting on the lateral surface of the surangular beneath the jaw joint. Dark shading represents visible musculature, light shading indicates the path taken by muscle covered by superficial bones.

Figure 39. A in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 39. A, Abrictosaurus consors (Thulborn, 1974). NHMUK RU B54 (holotype). A partial skull (illustrated in abstract form – and based on the reconstruction in Thulborn, 1978). Shading represents known elements of the skull and dentition. The specimen includes postcranial elements that (along with the skull) are in need of further preparation and re-description. B, Abrictosaurus consors (Thulborn, 1974). NHMUK RU B54 (holotype). The maxillary and dentary dentitions, as drawn by Thulborn (1974: fig. 3). C, Lanasaurus scalpridens Gow, 1975. BP/1/4244 (holotype). The maxillary dentition in medial aspect [reversed for comparison with (B)] showing the almost complete dentition (crown 12 obliquely truncated) and with the individually angled wear facets accentuated by cross-hatching (redrawn from Hopson, 1980: fig. 2).

Figure 31 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 31. Heterodontosaurus tucki. SAM-PK-K1334 (referred specimen). Posterior portion of the left maxilla. Segmented image prepared from computed tomography scans of the original. A, medial aspect. Bones in grey, erupted crowns shown in yellow, replacement crowns shown in red. B, semi-transparent image to show the position and extent of erupted and replacement teeth within the maxilla. For full list of abbreviations see end of paper.

Figure 24 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 24. Heterodontosaurus tucki Crompton & Charig, 1962. SAM-PK-K1332 (referred specimen). The upper dentition in: A, occlusal view based on original specimen as preserved; B, partial reconstruction of the lateral view of the maxillary dentition alone, with the isolated M.1 added in position; C, reconstruction of the medial view of M.1– M.3. For full list of abbreviations see end of paper.

Figure 27 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 27. Heterodontosaurus tucki Crompton & Charig, 1962. SAM-PK-K1332 (referred specimen). Line drawings based on scanning electron micrograph images of right dentary teeth: De.7–De.9. A, worn surfaces of the teeth in oblique dorsolateral aspect showing the lipped lower edges of the wear facets and the minor imbrication between crowns (the overlap pattern is the reverse of that seen in the maxillary dentition – see Fig. 21B). B, close-up of De.9 to show details of the wear facet and the lower 'lip' at the base of the wear facet. For full list of abbreviations see end of paper.

Figure 19 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 19. Heterodontosaurus tucki Crompton & Charig, 1962. Attempted reconstruction of the left lower jaw in (A) lateral view and (B) medial view. For full list of abbreviations see end of paper.

Figure 34 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 34. Heterodontosaurus. Attempted reconstruction of some of the principal adductor musculature. A, M. adductor mandibulae externus superficialis (MAMES) showing a subdivision into portions associated primarily with the postorbital and squamosal (MAMESX in the text), respectively. B, M. depressor mandibulae (MDM). Dark shading represents visible musculature, light shading indicates the path taken by muscle covered by superficial bones.

Figure 18 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 18. Heterodontosaurus tucki Crompton & Charig, 1962. SAM-PK-K1332 (referred specimen). Right lower jaw (anterior portion only) in (A) lateral and (B) medial views, see also Appendix 5C,D. For full list of abbreviations see end of paper.

Figure 13 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 13. Heterodontosaurus tucki Crompton & Charig, 1962. Attempted reconstruction of the skull in ventral view (lower jaw removed). Note: the anatomical configuration of the anterior palate is conjectural; the proximity of the medial edges of the pterygoids is uncertain, although they seem unlikely to have been sutured in place, but may have been closer together than shown here, and linked by connective tissue, in life; the thin vertical sheets of bone that form the medial wall of the adductor chamber (pterygoid and quadrate wings, and the much-expanded flange on the lateral surface of the basisphenoid) appear to have been quite close. For full list of abbreviations see end of paper.

Figure 15 in The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

Figure 15. Heterodontosaurus tucki Crompton & Charig, 1962. A, reconstruction of the neurocranium in left lateral view (with surrounding bones indicated as transparent). B, outline based on (A) above with annotations to identify specific structural features. Reconstruction based on the skulls of SAM-PK-K337 and K1332 supplemented by stereo photographs prepared for A. W. C. in anticipation of the earlier planned publication. Notes: the suture between the lateral walls of the braincase and the floor is unclear; the sutures between the laterosphenoid, proötic and opisthotic are not discernible; the extent of the dorsal lappet that appears to project from the dorsomedial edge of the?proötic is uncertain (it remains a possibility that the 'lappet' represents an anterior extension of the supraoccipital); the details of the anatomy of the basisphenoid flange in the proximity of the trigeminal fossa are unclear – even in the original stereo pairs prepared for A. W. C. For full list of abbreviations see end of paper.