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Fig. 7 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 7. Coelurosaurian theropod Phuwiangvenator yaemniyomi gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wiang, Khon Kaen Province, Thailand. A. SM-PW9B-3, manual phalanx I-1 in ventral (A1) and proximal (A3) views; line drawing in ventral view (A2). B. SM-PW9B-19, manual ungual I-2 in medial (B1), distal (B2), lateral (B3), proximal (B4), dorsal (B5), and ventral (B6) views. Arrow indicates the longitudinal ventral furrow.

Fig. 17 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 17. Coelurosaurian theropod Vayuraptor nongbualamphuensis gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wat, Nong Bua Lamphu Province, Thailand. SM-NB A1-2, left astragalocalcaneum in anterior (A2), medial (A3), lateral (A4), and distal (A5) views; line drawing in anterior view (A1).

Fig. 14 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 14. Coelurosaurian theropod Phuwiangvenator yaemniyomi gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wiang, Khon Kaen Province, Thailand. SM-PW9B-10, right pedal ungual IV-5 in lateral (A1) and ventral (A2) views.

Fig. 13 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 13. Coelurosaurian theropod Phuwiangvenator yaemniyomi gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wiang, Khon Kaen Province, Thailand. SM-PW9B-11 (A), SM-PW9B-7 (B), SM-PW9B-8 (C), SM-PW9B-22 (D), SM-PW9B-5 (E), SM-PW9B-9 (F), SM-PW9B-19 (G), SM-PW9B-6 (H), SM-PW9B-45 (I), SM-PW9B-10 (J); right pedal phalanges (B, C, E, F, H, I) and unguals (A, D, G, J), in ventral (A1–J1) and dorsal (A2–J2) views; line drawings in dorsal view (A3–J3). Dashed lines are the reconstruction of pedal phalanges III-1, IV-2, and IV-3 and pedal unguals II-3 and III-4.

Fig. 2 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 2. Map of Thailand (A) and close-up of northeastern Thailand (B) showing the location of Phu Wiang locality, Khon Kaen Province (square) and Phu Wat locality, Nong Bua Lamphu Province (star). Dark gray, Sao Khua Formation outcrops, light gey, Phu Kradung and Khok Kruat formations.

Fig. 10 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 10. Phuwiangvenator yaemniyomi gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wiang, Khon Kaen Province, Thailand. SMPW9A-B17, right (A) and SM-PW9B-18, left (B); astragalocalcaneum in anterior (A2, B2), medial (A3, B3), distal (A4, B4), and lateral (A5, B5) views; line drawings in anterior view (A1, B1). Dashed lines are the reconstruction of the ascending processes of the astragali.

Fig. 4 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 4. Coelurosaurian theropod Phuwiangvenator yaemniyomi gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wiang, Khon Kaen Province, Thailand. SM-PW9B-39, anterior sacral vertebrae in right lateral (A1) and ventral (A2) views; line drawing in ventral view (A3). Arrows indicate ventral sulci, light grey, broken part; dark grey, matrix.

Fig. 9 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 9. Coelurosaurian theropod Phuwiangvenator yaemniyomi gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wiang, Khon Kaen Province, Thailand. A. SM-PW9B-41, right tibia in proximal view. B. SM-PW9B-40, left tibia in distal view. Light grey indicates broken bone.

Fig. 16 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 16. Coelurosaurian theropod Vayuraptor nongbualamphuensis gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wat, Nong Bua Lamphu Province, Thailand. SM-NB A1-2, left tibia with associated astragalocalcaneum in anterior (A1), lateral (A2), posterior (A3), medial (A4), proximal (A5), and distal (A6) view. Arrow indicates vertical ridge on the tibia.

Fig. 15 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 15. Coelurosaurian theropod Vayuraptor nongbualamphuensis gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wat, Nong Bua Lamphu Province, Thailand. PRC-NB A1-11, right coracoid in lateral (A1) and medial (A2) views. Dashed lines are the reconstruction of the posteroventral process of the coracoid.

Fig. 12 in Two new basal coelurosaurian theropod dinosaurs from the Lower Cretaceous Sao Khua Formation of Thailand

Fig. 12. Coelurosaurian theropod Phuwiangvenator yaemniyomi gen. et sp. nov. from the Early Cretaceous Sao Khua Formation of Phu Wiang, Khon Kaen Province, Thailand. SM-PW9B-44 (A), SM-PW9B-43 (B), SM-PW9B-42 (C); metatarsals in anterior (A1–C1) and proximal (A2–C2) views; line drawings in anterior (A3–C3) and proximal (A4–C4) views; metatarsal III in medial (B5) and distal (B6) views.

Fig. 6 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 6. Cranial bones of lepidosaur rynchocephalian Clevosaurus cambrica Keeble, Whiteside, and Benton, 2018 (NHMUK PV R37014) from Late Triassic, Pant-y-ffynnon, Wales, UK. A. The right premaxilla in medial (A1) and lateral (A2) views. B. The right maxilla in lateral (B1) and medial (B2) views. C. The right (C1) and left (C2) nasal in dorsal view. D. The right (D1, D4) and left (D2, D3) frontals in dorsal (D1, D2) and ventral (D3, D4) views. E. The right (E1, E4) and left (E2, E3) parietals in dorsal (E1, E2) and ventral (E3, E4) views.

Fig. 2 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 2. Newly identified cranial bones present in lepidosaur rhynchocephalian Clevosaurus hudsoni Swinton, 1939 (NHMUK PV R36832) from Rhaetian, Cromhall Quarry, England, UK. A. The right postorbital in medial view, identified from amongst unidentified bones from the original surface dataset created by O'Brien et al. (2018). B. The left squamosal in lateral view, re-identified here from its previous suggested identity of a pterygoid flange. C. The right squamosal in lateral view, like A identified here from amongst previously unidentified bones from the original dataset. D. The left quadrate in medial view, partially resegmented from the original dataset to be more complete. E. The right quadrate in medial view, newly segmented and identified here. F. Left palatine in ventral view, partially resegmented from the original data set, note the number of palatine teeth (nine). G. The right pterygoid in medial view, partially resegmented from the original dataset, seen here with a newly segmented pterygoid flange. H. The newly identified pila antotica, and newly segmented para- and basisphenoids in left (H1) and right (H2) lateral; ventral (H3), and dorsal (H4) views. I. The left coronoid in medial view.

Fig. 12 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 12. Reconstruction of the skulls of lepidosaur rynchocephalians. A. Clevosaurus hudsoni Swinton, 1939 (based on NHMUK PV R36832). B. Clevosaurus cambrica Keeble, Whiteside, and Benton, 2018 (based on NHMUK PV R37014). In dorsal (A1, B1), posterior (A2, B2), ventral (A3, B3), lateral (A4, B4) views. Bones types that are absent in their respective datasets are highlighted in orange. Note that the pterygoids of C. cambrica bear two rows of multiple teeth, but the exact number of teeth at this time is unknown.

Fig. 9 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 9. The reassembled braincase of lepidosaur rynchocephalian Clevosaurus cambrica Keeble, Whiteside, and Benton, 2018 (NHMUK PV R37014) from Late Triassic, Pant-y-ffynnon, Wales, UK. In dorsal (A1), posterior (A2), ventral (A3), and lateral (A4) views. Abbreviations: l., left; r., right.

Fig. 4 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 4. The resegmented bones of lepidosaur rynchocephalian Clevosaurus cambrica Keeble, Whiteside, and Benton, 2018 (NHMUK PV R37014) from Late Triassic, Pant-y-ffynnon, Wales, UK; in dorsal (A1) and ventral (A2) views. Abbreviations: l., left; r., right.

Fig. 1 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 1. The two surface data-sets of lepidosaur rynchocephalians. A. Clevosaurus hudsoni Swinton, 1939 (NHMUK PV R36832) from Rhaetian, Cromhall Quarry, England, UK, the left side of the digitally segmented skull in lateral view, adapted from O'Brien et al. (2018). B. Clevosaurus cambrica Keeble, Whiteside, and Benton, 2018 (NHMUK PV R37014) from Late Triassic, Pant-y-ffynnon, Wales, UK, available prior to this paper, the digitally segmented skull in ventral view, adapted from Keeble et al. (2018).

Fig. 8 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 8. Cranial bones present in lepidosaur rynchocephalian Clevosaurus cambrica Keeble, Whiteside, and Benton, 2018 (NHMUK PV R37014) from Late Triassic, Pant-y-ffynnon, Wales, UK. A. The right palatine in ventral view. B. The left and right vomers in ventral view. C. The left epipterygoid in lateral (C1) and posterior (C2) views. D. The left pterygoid and ectopterygoid in ventral view. E. The left quadrate in medial (E1) and posterior (E2) views.

Fig. 7 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 7. Cranial bones of lepidosaur rynchocephalian Clevosaurus cambrica Keeble, Whiteside, and Benton, 2018 (NHMUK PV R37014) from Late Triassic, Pant-y-ffynnon, Wales, UK. A. The reassembled left prefrontal. B. The left postfrontal. C. The reassembled left postorbital. D. The left squamosal. E. The left supratemporal. In lateral (A1–D1, E) and medial (A2–D2) views.

Fig. 11 in Diversity in rhynchocephalian Clevosaurus skulls based on CT reconstruction of two Late Triassic species from Great Britain

Fig. 11. The vertebral column and pectoral girdle elements of lepidosaur rynchocephalian Clevosaurus cambrica Keeble, Whiteside, and Benton, 2018 NHMUK PV R37013 and NHMUK PV R37014) from Late Triassic, Pant-y-ffynnon, Wales, UK. A. The axial-atlas complex in dorsal (A1), lateral (A2), ventral (A3) and anterior (A4) views. B. The third cervical vertebra in right lateral (B1) and anterior (B2) views. C. A dorsal vertebra in right lateral (C1) and anterior (C2) views. D. The five cervical vertebrae present in the scans taken of NHMUK PV R37014, in lateral view, with asterisk indicating the cervical vertebra seen in B; note the posterior-most vertebra terminates prematurely due to the extent of the CT scans. E. The partial vertebral column of NHMUK PV R37013 in lateral view, with asterisk indicating the dorsal vertebra seen in C. F. The left (F1) and right (F2) scapula in lateral view. G. The left (G1) and right (G2) coracoids in lateral view.