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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.

Fig. 4 in First records of diapsid Palacrodon from the Norian, Late Triassic Chinle Formation of Arizona, and their biogeographic implications

Fig. 4. Paleoreconstruction map of Pangaea in the Triassic with Gondwanan occurrences of Palacrodon marked with circles and Laurasia occurrences of Palacrodon marked with a star (note the two Arizona occurrences overlap in this scale). Paleogeography modified from www.pubs.usgs.gov/gip/dynamic/ historical.html.

Fig. 3 in First records of diapsid Palacrodon from the Norian, Late Triassic Chinle Formation of Arizona, and their biogeographic implications

Fig. 3. Diapsid Palacrodon sp. from Norian, Placerias Quarry, St. John's, USA. A. MNA 3684, fragment of marginal dentition with two complete teeth in occlusal (A1, A2), labial (A3, A4), lingual (A5), and oblique (A6) views. B. MNA V11247, isolated tooth in occlusal (B1) and distal (B2) views. Arrows point in anterior direction. Photographs (A1, A3, A5, A6, B), explanatory drawings (A2, A4).

Fig. 2. Diapsid Palacrodon browni Broom, 1906 in First records of diapsid Palacrodon from the Norian, Late Triassic Chinle Formation of Arizona, and their biogeographic implications

Fig. 2. Diapsid Palacrodon browni Broom, 1906 (PEFO 37247) from Norian, Petrified Forest National Park, Arizona, USA; in occlusal (A), labial (B), lingual (C), and oblique (D) views. Arrows point in anterior direction. Photographs (A1, B1, C, D), explanatory drawings (A2, B2).

Fig. 1 in First records of diapsid Palacrodon from the Norian, Late Triassic Chinle Formation of Arizona, and their biogeographic implications

Fig. 1. Geographic and stratigraphic context of Palacrodon occurrences in Arizona. A. Map of Arizona showing the locations of PFV 396 and MNA 207-2. Map of North America modified from www.lakodosajta.info. B. Stratigraphic chart of the Chinle Formation at PEFO and the Placerias Quarry, with detrital zircon dates from Ramezani et al. (2011).

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.

Fig. 16 in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 16 Isolated elements of the left pes of Proganochelys quenstedtii (SMF 09-F2). A–C, Isolated elements, potentially belonging to a single digit. A, Terminal phalange/ungual. B, Proximal phalangeal bone. C, Metatarsal bone. D, Articulated digit associated with sesamoid bone

Fig. 15 in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 15 Hindlimb elements (left autopodium) of Proganochelys quenstedtii (SMF 09-F2). A–D, Articulated pes with interpretative sketches superimposed (A, B dorsal, C, D ventral/plantar view). Abbreviations: ast, astragalus; cal, calcaneum; dt 1–4, distal tarsal 1–4; mt I–V, metatarsal I–V; ost, osteoderm; ph, phalangeal bone; ses, sesamoid bone

Fig. 14 in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 14 Hindlimb elements (zeugopodium) of Proganochelys quenstedtii (SMF 09-F2). A, B, Right tibia (A ventral, B dorsal view). C, D, Right fibula (C ventral, D dorsal view). E–F, Limb osteoderms with ovoid bases and off-centred peaks

Fig. 13 in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 13 Forelimb elements of Proganochelys quenstedtii (SMF 09-F2). A–D, Left humerus and interpretative drawings superimposed (A, B dorsal, C, D ventral view). E, F, Left ulna and interpretative drawing superimposed in ventral view. Abbreviations: delt, deltopectoral crest; ect, ectepicondyle; ect f, ectepicondylar foramen; ent, entepicondyle; lat, lateral process; med, medial process; ole, olecranon

Fig. 12 in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 12 Pelvic girdle and sacrum of Proganochelys quenstedtii (SMF 09-F2). A–D, Pelvic girdle consisting of fused pubes, ilia and ischia (A posterior, B anterior, C right lateral, D left lateral view). Note that the hole in the left pubis does not represent the thyroid fenestra but is a break in the bone. E, F, Fragment of the postpelvic hypoischium. Abbreviations: ac, acetabulum; epi, epipubic process, il, ilium; is, ischium; it, ischial tubercle; lpp, lateral pubic process; pu, pubis; sr I, first sacral rib; sr II, second sacral rib; sv I, first sacral vertebral centrum; tf, thyroid fenestra

Fig. 10 in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 10 Neck vertebral column of Proganochelys quenstedtii (SMF 09-F2). A, Cervical vertebrae and osteoderms in left lateral view. B, Osteoderms as they are mounted over the cervical vertebrae in posterior view. C, Cervical vertebrae and osteoderms in dorsal view. D, Cervical vertebrae and osteoderms in ventral view. Abbreviations: c, centrum; na, neural arch; poz, postzygapophysis; prz, prezygapophysis; tp, transverse process

Fig. 11 in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 11 Tail region of Proganochelys quenstedtii (SMF 09-F2). A, Preserved caudal vertebrae in left lateral view. The black arrow points at the hemal arch of the 4th preserved caudal vertebra from anterior. B, Preserved tail in ventral view. C, Preserved caudal vertebrae and anterior osteoderms of the tail club in dorsal view. D, Tail club in left lateral view. E, F, Individual osteoderms consisting of four spikes each, in anterior and posterior views. The exact position of these elements anterior to the tail club (i.e., closer to the base of the tail) is ambiguous. G, Isolated tail spike in anterior and posterior view. Abbreviations: c, centrum; ha, hemal arch; na, neural arch; os, osteoderm; poz, postzygapophysis; prz, prezygapophysis; tp, transverse process

Fig. 9 in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 9 Shell remains of Proganochelys quenstedtii (SMF 09-F2). A–C, Carapace (A angled anterodorsolateral, B, right side in dorsolateral, C, right side in lateral view). Reconstructed parts of the carapace are delimited by grey-shaded area set off by a stippled white line and marked with a white r. The anterior aspect of the carapace is marked in each view by a black arrow. D–H, Various parts of the plastron. Due to the fragmented nature of these bones, their position in the plastron is ambiguous

Fig. 8 3D in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 8 3D renderings of the endosseous labyrinths and stapedial fragment of Proganochelys quenstedtii (SMF 09-F2). A, Left labyrinth in lateral view; B, In dorsal view; C, In posterior view; D, Right labyrinth in lateral view, E, In dorsal view; F, In posterior view; G, Left labyrinth in lateral view rendered transparent to show preservational position of the stapedial fragment; H, Close-up of stapedial fragment in lateral view. I, In medial view. Note that the right lateral semicircular canal is broken. Abbreviations: asc, anterior semicircular canal; bsr, base of stapedial rod; cod, cochlear duct; fov, fenestra ovalis; fpl, fenestra perilymphatica; lsc, lateral semicircular canal; psc, posterior semicircular canal; sfp, stapedial footplate

Fig. 5 3D in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 5 3D renderings of the braincase of Proganochelys quenstedtii (SMF 09-F2). A, Posterodorsal view; B, Same as A, but rendered transparently with horn core vascularization models rendered opaque; C, Posterior view; D, Same as C, but rendered transparent with horn core vascularization models rendered opaque. Note that dashed lines in A are margins of a weakly defined groove we interpret as the osteological correlate for the course of the stapedial artery. Abbreviations: btb, basis tuberculi basalis; exr, exoccipital ridge; fm, foramen magnum; hc, horn core; occ, occipital condyle; otc, otic capsule; pop, paroccipital condyle; stag, stapedial artery groove; vas, vascularization; X–XI, short canal for the CN X–XI (i.e., foramen jugulare intermedius of Sterli & Joyce, 2007)

Fig. 7 3D in First evidence of PRoganoCHelYS QUenStedtii (Testudinata) from the PlateoSaURUS bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 7 3D renderings of the braincase endocast, cranial nerve endocasts, and endosseous labyrinth model of Proganochelys quenstedtii (SMF 09-F2). A, Left lateral view; B, Dorsal view; C, Right lateral view; D, Ventral view. Abbreviations: end, cranial endocast; f, foramen jugulare; fov, fenestra ovalis; fpl, fenestra perilymphatica (interface between endosseous labyrinth and canal for the CN X–XI); gg, geniculate ganglion of the facial nerve (CN VII); lab, endosseous labyrinth; pit, endocast of the pituitary fossa; V, trigeminal nerve (CN V); VI, abducens nerve (CN VI); VII, facial nerve (CN VII); VIII, acoustic nerve (CN VIII); X–XI, vagus nerve (CN X) and accessory nerve (CN XI); XII, hypoglossal nerve (CN XII)