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Figure 5 in A new aetosaur (Archosauria: Pseudosuchia) from the upper Blue Mesa Member (Adamanian: Early-Mid Norian) of the Late Triassic Chinle Formation, northern Arizona, USA, and a review of the paratypothoracin Tecovasuchus across the southwestern USA

Figure 5. Revised regional occurrences of Tecovasuchus chatterjeei across the Chinle Formation and Dockum Group of the southwestern United States (modified from Martz 2008 and Heckert et al. 2007). Abbreviations: AZ=Arizona, NM=New Mexico, TX=Texas.

Figure 1 in A new aetosaur (Archosauria: Pseudosuchia) from the upper Blue Mesa Member (Adamanian: Early-Mid Norian) of the Late Triassic Chinle Formation, northern Arizona, USA, and a review of the paratypothoracin Tecovasuchus across the southwestern USA

Figure 1. Stratigraphic position in the Chinle Formation (A) of PFV 456 and the Placerias and Downs Quarries in Arizona (modified from Reyes et al. 2020 and Kligman et al. 2023), and their geographic occurrence (B). U-Pb ages based on Ramezani et al. (2014) and Rasmussen et al. (2020). Abbreviations: AZ=Arizona; PEFO=Petrified Forest National Park; Tr.=Triassic.

Figure 3. A in A new aetosaur (Archosauria: Pseudosuchia) from the upper Blue Mesa Member (Adamanian: Early-Mid Norian) of the Late Triassic Chinle Formation, northern Arizona, USA, and a review of the paratypothoracin Tecovasuchus across the southwestern USA

Figure 3. A. Holotype paramedian osteoderm of Kryphioparma caerula gen. et sp. nov. in comparison to that of other stagonolepidoid taxa documented within the Placerias Quarry and PFV 456, UCMP 165173. B. Desmatosuchus, PEFO 49568. C. Calypotosuchus wellesi, PEFO 46222. Orientation: All in dorsal view. Abbreviations: Ant.=Anterior, Ant. bar=Anterior bar, Ant. lam.=Anterior lamina, Dors. em.=Dorsal eminence. Small, unlabeled arrows indicate lateral direction.

Figure 4 in A new aetosaur (Archosauria: Pseudosuchia) from the upper Blue Mesa Member (Adamanian: Early-Mid Norian) of the Late Triassic Chinle Formation, northern Arizona, USA, and a review of the paratypothoracin Tecovasuchus across the southwestern USA

Figure 4. Paramedian osteoderms of Adamanian typothoracines documented within the Chinle Formation (A, B, D, E, H, I, L, M) and Dockum Group (C, F, G, J, K, N). Kryphioparma caerula gen. et sp. nov., UCMP 165173 (A, B). Tecovasuchus chatterjeei, PEFO 49404 (D, E), NCSM 35011 (H, I), UMMP 9600 (C, F, G), and TTU-P 9222 (J). Ambiguous paratypothoracin, MNA V3202 (L-M). Paratypothorax sp., TTU-P 9169 (K). Typothorax coccinarum, TTU-P 9214 (N). Orientations: Dorsal (A, C, D, H, J, K, L, N), Ventral (G), posterior (F), medial cross-section (B, M), lateral cross-section (E, I) views. Abbreviations: Ant.=Anterior, Ant. bar=Anterior bar, A.l.p.=Anterolateral process, A.m.p.=Anteromedial process, Bvl.=Beveled edge, Dors. em.=Dorsal eminence, Vent. strt.=Ventral strut. Small, unlabeled arrows indicate lateral direction.

Figure 2 in A new aetosaur (Archosauria: Pseudosuchia) from the upper Blue Mesa Member (Adamanian: Early-Mid Norian) of the Late Triassic Chinle Formation, northern Arizona, USA, and a review of the paratypothoracin Tecovasuchus across the southwestern USA

Figure 2. Paramedian osteoderm fragments of Kryphioparma caerula gen. et sp. nov. Holotype and paratype specimens collected from the Placerias Quarry, UCMP 165173 (A–F) and UCMP 126847 (G–L), respectively. Referred specimens collected from PFV 456, PEFO 51662 (M–R) and PEFO 46468 (S–X). Orientations: anterior (A, G, M, S), dorsal (B, H, N, T), ventral (C, I, O, U), posterior (D, J, P, V), medial cross-section (F, K, R, W), and lateral cross-section (E, L, Q, X) views. Abbreviations: Ant.=Anterior, Ant. bar=Anterior bar, Grv.=Grooves, M.e.=Medial edge, Vent. strt.=Ventral strut. Small, unlabeled arrows indicate lateral direction.

FIGURE 20 in Skull osteology of Aetosauroides scagliai Casamiquela, 1960 (Archosauria: Aetosauria) from the Late Triassic of Brazil: New insights into the paleobiology of aetosaurs

FIGURE 20. Jugal and quadratojugal of Aetosauria. Selected skulls of aetosaurs in lateral view and respectively close-ups: A and A1, Aetosauroides scagliai (MCN-PV 2347), with interpretative drawing. B and B1, Stenomyti huangae (DMNH 60708). C and C1, Aetosaurus ferratus (SMNS 5770 S-21). D and D1, Paratypothorax andressorum (SMNS 19003). E and E1, Desmatosuchus smalli (TTU P-9023). F and F1, Neoaetosauroides engaeus (PULR 4363). Abbreviations: aof, antorbital fenestra; itf, infratemporal fenestra; j, jugal; mf, mandibular fenestra; en, external nares; o, orbit; pvpj, posteroventral process of the jugal; q, quadrate; qj, quadratojugal; stf, supratemporal fenestra.

FIGURE 19 in Skull osteology of Aetosauroides scagliai Casamiquela, 1960 (Archosauria: Aetosauria) from the Late Triassic of Brazil: New insights into the paleobiology of aetosaurs

FIGURE 19. Skull reconstruction of Aetosauroides scagliai, based mainly on MCN-PV 2347 (scaled to this specimen), UFSM 11505 and PVL-2059. A, skull and mandible in lateral view. B, skull in dorsal view. C, skull in ventral view. Gray areas indicate depth. Abbreviations: ang, angular; aof, antorbital fenestra; ar, articular; ch, choana; de, dentary; itf, infratemporal fenestra; f, frontal; fi, foramen incisivum; itf, infratemporal fenestra; j, jugal; la, lacrimal; mf, mandibular fenestra; mx, maxilla; n, nasal; ne, external nares; o, orbit; pa, parietal; pmx, premaxilla; po, postorbital; pof, postfrontal; prf, prefrontal; pt, pterygoid; q, quadrate; qj, quadratojugal; rap, retroarticular process; sq, squamosal; sbf, suborbital fenestra; sbtf, subtemporal fenestra; stf, supratemporal fenestra; su, surangular.

FIGURE 15. 3D in Skull osteology of Aetosauroides scagliai Casamiquela, 1960 (Archosauria: Aetosauria) from the Late Triassic of Brazil: New insights into the paleobiology of aetosaurs

FIGURE 15. 3D Reconstruction based on µCT-scan images of the anterior portion of the dentary of Aetosauroides scagliai (MCN-PV 2347). A, right dentary in lateral view, with reconstructed tip. B, anterior tip of the left dentary in lateral view. C, anterior tip of the left dentary in medial view. D, right dentary in medial view. E, combined anterior portions of the dentary of MCN-PV 2347 in dorsal view. F, combined anterior portions of the dentary in anterior view. G, combined anterior portions of the dentary of MCN-PV 2347 in ventral view. H, mandible reconstruction with elements preserved in MCN-PV 2347. Asterisk (*) tooth number indicates that the teeth have resorption pits. Abbreviations: ae, anterior lateral expansion; afo, anterior foramen; dt, dentary teeth or alveolus; ed, edentulous portion; fo, foramen; idp, interdental plates; nf, nutrient foramen; sy, symphysis; mg, Meckelian groove.

FIGURE 13 in Skull osteology of Aetosauroides scagliai Casamiquela, 1960 (Archosauria: Aetosauria) from the Late Triassic of Brazil: New insights into the paleobiology of aetosaurs

FIGURE 13. Parietal of Aetosauroides scagliai, MCN-PV 2347 (A, D and E) and MCP-3450-PV (B); and 'Polesinesuchus aurelioi' (ULBRAPV003T; C, F, G and H). A, photograph of posterior region of the skull of MCN-PV 2347 in dorsal view. B, photograph of the left parietal of MCP-3450-PV in dorsal view. C, photograph of the right parietal of 'P. aurelioi' in dorsal view. D, 3D reconstruction based on µCT-scan images of a fragment of the left parietal of MCN-PV 2347 in dorsal view. E, 3D reconstruction based on µCT-scan images of a fragment of the left parietal of MCN-PV 2347 in lateral view (mirrored). F, photograph of the right parietal of 'P. aurelioi' in lateral view. G, interpretative drawing of the right parietal of 'P. aurelioi' in lateral view. H, interpretative drawing of the right parietal of 'P. aurelioi' in dorsal view. The gray lines in E and F depict the inclination angle of the occipital portion of the parietal. Abbreviations: lg, lateral groove; o, orbit; of, overhanging flange; opt, occipital portion of the parietal. or, ornamentation; pof, postfrontal; pop, paraoccipital process of the parietal; r, ridge; stfo, supratemporal fossa; tr, transverse ridge; ts, transverse sulcus.

FIGURE 10 in Skull osteology of Aetosauroides scagliai Casamiquela, 1960 (Archosauria: Aetosauria) from the Late Triassic of Brazil: New insights into the paleobiology of aetosaurs

FIGURE 10. Inner surface of the partial skull of Aetosauroides scagliai (MCN-PV 2347). A, photograph in ventral view. B, anterior left orbital margin in posterior view. C, medial surface of the left side of the skull at the antorbital fenestra region. D and E, interpretative drawings with polyethylene glycol resin in dark gray and matrix in brown. Abbreviations: aof, antorbital fenestra; d, depression; de, dentary; f, frontal; j, jugal; la, lacrimal; mx, maxilla; n, nasal; n.s, nasal suture; o, orbit; pa, parietal; prf, prefrontal; prfvp, prefrontal ventral process; po, postorbital; pof, postfrontal.

FIGURE 8. A, 3D in Skull osteology of Aetosauroides scagliai Casamiquela, 1960 (Archosauria: Aetosauria) from the Late Triassic of Brazil: New insights into the paleobiology of aetosaurs

FIGURE 8. A, 3D Reconstruction based on µCT-scan images of the posterior portion of the left side of the skull of Aetosauroides scagliai (MCN-PV 2347). B, isolated broken left jugal and quadratojugal, in lateral view. C, µCT-scan images of the isolated broken jugal and quadratojugal, in dorsolateral view; Abbreviations: apqj, natural cast of the anterior projection of the quadratojugal; ar, articular; dqlw, depression for quadrate lateral wing; itf, infratemporal fenestra; j, jugal; nc, natural cast of the quadratojugal; pa, parietal; pdpj, posterodorsal process of the jugal; po, postorbital; pvpj, posteroventral process of the jugal; q, quadrate; qj, quadratojugal; rap, retroarticular process; sq, squamosal; su, surangular; stf, supratemporal fenestra; stfo, supratemporal fossa.

FIGURE 4 in Skull osteology of Aetosauroides scagliai Casamiquela, 1960 (Archosauria: Aetosauria) from the Late Triassic of Brazil: New insights into the paleobiology of aetosaurs

FIGURE 4. Skull of Aetosauroides scagliai (MCN-PV 2347) in right lateral view. A, photograph. B, interpretative drawing with matrix shown in brown. Abbreviations: ang, angular; aof, antorbital fenestra; aofo, antorbital fossa; de, dentary; en, external naris; fo, foramina; j, jugal; la, lacrimal; mf, mandibular fenestra; mx, maxilla; n, nasal; o, orbit; pa, parietal; par, prearticular; pdmx, posterodorsal process of the maxilla; pmx, premaxilla; pmxn, premaxilla notch; prf, prefrontal; po, postorbital; pof, postfrontal; pvpj, posteroventral process of the jugal; q, quadrate; qj, quadratojugal; r, ridge; stf, supratemporal fenestra; stfo, supratemporal fossa; su, surangular; sufo, surangular foramen; tpmx, thornlike lateral projection of the premaxilla.

FIGURE 14. 3D in Skull osteology of Aetosauroides scagliai Casamiquela, 1960 (Archosauria: Aetosauria) from the Late Triassic of Brazil: New insights into the paleobiology of aetosaurs

FIGURE 14. 3D Reconstruction based on µCT-scan images of the left pterygoid of Aetosauroides scagliai (MCN-PV 2347). A, dorsal view. B, lateral view. C, ventral view. D, medial view. E, posterior view. Abbreviations: b.qc, broken quadrate contact; bptc, basipterygoid process contact; ectc, ectopterygoid contact; lwpt, lateral wing of the pterygoid; pppt, palatal process of the pterygoid; r, ridge.

FIGURE 3 in Anatomy, taxonomy and phylogenetic relationships of Prestosuchus chiniquensis (Archosauria: Pseudosuchia) from the original collection of von Huene, Middle-Late Triassic of southern Brazil

FIGURE 3. Life reconstruction (1) and preserved bones (2) of Prestosuchus chiniquensis. In red the holotype material and in white the referred material known. Drawn by Jorge Gonzales..

FIGURE 1 in Anatomy, taxonomy and phylogenetic relationships of Prestosuchus chiniquensis (Archosauria: Pseudosuchia) from the original collection of von Huene, Middle-Late Triassic of southern Brazil

FIGURE 1. Map of Brazil, showing the location of the Prestosuchus chiniquensis-bearing site as indicated by von Huene (1938) within the state of Rio Grande do Sul. Map modified from Reichel et al. (2009).

FIGURE 12 in Anatomy, taxonomy and phylogenetic relationships of Prestosuchus chiniquensis (Archosauria: Pseudosuchia) from the original collection of von Huene, Middle-Late Triassic of southern Brazil

FIGURE 12. Hind limb bones of the lectotype of Prestosuchus chiniquensis SNSB-BSPG AS XXV. 1-6, left femur (SNSB-BSPG AS XXV 10) in 1, anterior; 2, posterior; 3, lateral; 4, medial; 5, proximal, and 6, distal views. 7, articulated left tibia, fibula, and proximal tarsals in anteromedial view. 8-12, left tibia (SNSB-BSPG AS XXV 11a) in 8, medial; 9, lateral; 10, posterior; 11, proximal; and 12, distal views. 13-18, left fibula (SNSB-BSPG AS XXV 11b) in 13, proximal; 14, distal; 15, lateral; 16, medial; 17, posterior; and 18, anterior views. Abbreviations: dd, deep depression; f, popliteal fossa; fc, fibular condyle; g, groove; gt, great trochanter; ilt, iliofibularis trochanter; ip; incompletely preserved surface; kn, knob; ld, longitudinal depression; lud, lunate depression; plr, posterolateral ridge; pmt, posteromedial tuber; rd, rectangular depression; rt, rugose tubercle; s, scars; t, tubercle; td, triangular depression; tc, tibial condyle; tic, tibial contact; tfc, tibiofibular crest; 4t, fourth trochanter. Scale bars are indicated in the figure.

FIGURE 2 in Anatomy, taxonomy and phylogenetic relationships of Prestosuchus chiniquensis (Archosauria: Pseudosuchia) from the original collection of von Huene, Middle-Late Triassic of southern Brazil

FIGURE 2. Chronostratigraphic column of the Santa Maria Supersequence, showing the Prestosuchus chiniquensis- bearing level. Modified from Horn et al. (2014).

FIGURE 6 in Anatomy, taxonomy and phylogenetic relationships of Prestosuchus chiniquensis (Archosauria: Pseudosuchia) from the original collection of von Huene, Middle-Late Triassic of southern Brazil

FIGURE 6. Vertebral material of the lectotype of Prestosuchus chiniquensis SNSB-BSPG AS XXV. 1-3, Anterior cervical vertebra (SNSB-BSPG AS XXV 29) in 1, left lateral; 2, ventral; and 3, posterior views. 4-6, Middle cervical vertebra (SNSB-BSPG AS XXV 30) in 4, anterior; 5, posterior; and 6, dorsal views. 7, Anterior dorsal vertebrae (SNSB-BSPG XXV 31) in left lateral view. 8-9, Anterior caudal vertebrae and chevrons (SNSB-BSPG AS XXV 3b) in 8, left lateral; and 9, ventral views. Abbreviations: acd, anterior centrodiapophyseal lamina; al, accessory lamina; chc, chevrons contact; cpr, centroprezygapophyseal lamina; cr, cervical rib; dd, deep depression; di, diapophysis; dr, dorsal rib; hc, hemal canal; if, infradiapophyseal fossa; inf, infraprezygapophyseal fossa; infp, infraposzygapophyseal fossa; lld, lateral longitudinal depression; lf, lateral fossa; mb, medial bridge; nc, neural canal; pa, parapophysis; pad, paradiapophyseal lamina; pcd, posterior centrodiapophyseal lamina; pcl, posterior centroapophyseal lamina; pd, prezygodiapophyseal lamina; pos, postzygapophysis; pr, prezygapophysis; prd, prezygodiapophyseal laminae; ps, postzygapophysis lamina; tp, transverse process; vd, ventral depression; vk, ventral keel. Arrows indicate the orientation. Scale bar equals 1 cm indicated in the figure.

FIGURE 11 in Anatomy, taxonomy and phylogenetic relationships of Prestosuchus chiniquensis (Archosauria: Pseudosuchia) from the original collection of von Huene, Middle-Late Triassic of southern Brazil

FIGURE 11. Pelvic elements of the lectotype of Prestosuchus chiniquensis SNSB-BSPG XXV. 1, distal ends of right and 2, left pubis (SNSB-BSPG AS XXV 6) in anteromedial view; 3-5, articulated ischia (SNSB-BSPG XXV 3) in 3, dorsal; 4, lateral; and 5, ventral views. Abbreviations: dlc, dorsolateral crest; iac, acetabular contribution; iob, ischial obturator blade; is, interischial suture; kde, knob-like distal end; lm, lamina of bone; vi, ventral incision. Scale bars equal 3 cm.

FIGURE 10 in Anatomy, taxonomy and phylogenetic relationships of Prestosuchus chiniquensis (Archosauria: Pseudosuchia) from the original collection of von Huene, Middle-Late Triassic of southern Brazil

FIGURE 10. Humerus of the lectotype (1-6) of Prestosuchus chiniquensis. 1, proximal end of the left humerus (SNSBBSPG AS XXV 33) in posterior; 2, anterior; and 3, dorsal views. 4, distal end of the right humerus (SNSB-BSPG XXV 35) in anterior view. 5, proximal end of the right humerus (SNSB-BSPG AS XXV 33) in anterior; and 6, posterior views. Abbreviations: dc, deltopectoral crest; ent, entepicondyle; hh, humeral head; it, internal tuber; tg, trochlear groove. Scale bars equal 1 cm.