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FIG. 2 in Description of a New Blind and Rare Species of Xyliphius (Siluriformes: Aspredinidae) from the Amazon Basin Using High-Resolution Computed Tomography

FIG. 2. Lateral view of select species of Xyliphius. (A) X. barbatus, MLP 6798, holotype, 92.0 mm SL. (B) X. lepturus, ANSP 128941, 94.5 mm SL. (C) X. magdalenae, CZUT-IC 1288, 75 mm SL. (D) X. melanopterus, FMNH 99495, 120.4 mm SL. (E) X. kryptos, MCNG 27310, 112.0 mm SL. Photos by M. Sabaj (A), T. Carvalho (B, E), J. Garcia-Melo (C), and A. Thomaz (D).

FIG. 6 in Description of a New Blind and Rare Species of Xyliphius (Siluriformes: Aspredinidae) from the Amazon Basin Using High-Resolution Computed Tomography

FIG. 6. HRXCT model of select bones in Xyliphius sofiae, ANSP 182322, holotype, 44.1 mm SL. Bones associated with the anterior cephalic canals of the lateral line system (anterior is left) in dorsal (A) and lateral (B) views. Entire lateral ethmoid (anterior is left) in ventral (C) and frontal (D) view. (E) Partial lateral ethmoid in dorsal view cut to about half of its depth (anterior is left). (F) Partial lateral ethmoid in frontal view cut to about vertical through origin of lateral process. at: antorbital tubule; i1–i6: infraorbital branches one to six; io1: infraorbital one; iot: infraorbital tubules; lp: lateral process of lateral ethmoid; na: nasal; obc: olfactory bulb chamber; s1–s3: supraorbital branches one to three. Scale bar ¼ 2 mm.

FIG. 1 in Description of a New Blind and Rare Species of Xyliphius (Siluriformes: Aspredinidae) from the Amazon Basin Using High-Resolution Computed Tomography

FIG. 1. Holotype of Xyliphius sofiae, ANSP 182322, 44.1 mm SL, Río Amazonas in vicinity of Iquitos, Loreto, Peru. (A–C) Alcohol preserved (scale bar ¼ 5 mm). (D) Live. Photos by M. Sabaj.

FIG. 9 in Description of a New Blind and Rare Species of Xyliphius (Siluriformes: Aspredinidae) from the Amazon Basin Using High-Resolution Computed Tomography

FIG. 9. Ventral view of Weberian complex in select species of Xyliphius (anterior is top). (A) X. lepturus, FMNH 99488, 72.1 mm SL. (B) X. melanopterus, FMNH 99493, 81.9 mm SL. (C) Xyliphius sofiae, ANSP 182322, 44.1 mm SL. cv: complex vertebra; gbc: gas bladder chamber (line points to portion encapsulated by bone in B); hc: hemal canal; in: intercalarium; lal: lateral line tubules; pcv: parapophysis complex vertebra; pv5: parapophysis vertebra five; r6: rib 6; sc: scaphium; tr: tripus; v6: vertebra six. Scale bar ¼ 2 mm.

FIGURE 5. Micro-computed tomography 3D images. A–D in A new species of sponge crab of the genus Epigodromia McLay 1993 (Crustacea: Brachyura: Dromiidae) from the southeastern Arabian Sea, with notes on the Zoogeography

FIGURE 5. Micro-computed tomography 3D images. A–D, dorsal view; B–C, frontal view with chelipeds outer view. A, B, Epigodromia mclayi sp. nov., holotype, male (cw 11.43 mm, cl 10.33 mm), (IO/SS/BRC00370), southeastern Arabian Sea, Tamil Nadu, India; C–D, Epigodromia gilesii Alcock, 1900, male (cw 5.8 mm, cl 6.05 mm), (IO/SS/BRC00372), Malabar coast, southeastern Arabian Sea, India.

Figure 15 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 15. Computed tomography slices of the maxillary and dentary tooth rows of ºAM-PK-6536, Mesosuchus browni, showing intermedate condition of tooth implantation and arrangement. A, sagiưal section of less maxilla; B, transverse section of right maxilla; C, transverse section of right dentary. Dashed yellow line indicates region of seperation between tooth base and alveolar bone of the maxilla.

Figure 14 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 14. Strict consensus tree calculated from our re-analysis of the character matrix constructed by Ezcurra et al. (2016), with adjusted scorings for Mesosuchus browni. Mesosuchus browni is presented in red text, and the clades Rhynchosauria and Rhynchosauridae are labelled.

Figure 13 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 13. Strict consensus tree calculated from our re-analysis of the character matrix constructed by Scheyer et al. (2020) with adjusted scorings for Mesosuchus browni. Mesosuchus browni is presented in red text, and the clades Rhynchosauria and Rhynchosauridae are labelled.

Figure 10 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 10. Digitally isolated left mandible of SAM-PK-6536, Mesosuchus browni, in: A, lateral; B, medial; C, ventral; D, anterior; and E, posterior views.

Figure 12 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 12. Internal anatomy of left dentary and splenial of SAM-PK-6536, Mesosuchus browni: A, left dentary in lateral view; B, left dentary in dorsal view; C, left dentary in anterior view; D, left splenial in anterior view; E, left splenial in posterolateral view; F, left splenial in medial view.

Figure 11 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 11. Internal anatomy of the left maxilla and right jugal of SAM-PK-6536, Mesosuchus browni: A, left maxilla in lateral view; B, left maxilla in anterior view; C, left maxilla in medial view; D, left maxilla in posterior view; E, right jugal in dorsal view; F, right jugal in lateral view; and G, right jugal in anterior view.

Figure 2 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 2. Schematic tree displaying the generally accepted phylogenetic relationships of the taxa we use for general comparisons in our description of Mesosuchus browni.

Figure 9 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 9. Digitally isolated septomaxilla of SAM-PK-6536, Mesosuchus browni, in coronal section: A, through centre of Jacobson's chamber in posterolateral view; and B, through vomer in posterior view.

Figure 7 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 7. Digitally isolated palatal region of SAM-PK-6536, Mesosuchus browni, in: A, dorsal; B, posterior; and C, medial views.

Figure 8 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 8. Digitally isolated palatal complex of SAM-PK-6536, Mesosuchus browni, in: A, dorsal; B, right lateral; and C, anterior views.

Figure 3 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 3. Digitally segmented skull of SAM-PK-6536, Mesosuchus browni, in: A, right lateral; B, left lateral; C, anterior; and D, posterior views.

Figure 1 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 1. Volume renderings of the skull of SAM-PK-6536, Mesosuchus browni, in: A, left lateral; B, right lateral; C, ventral; D, dorsal; E, posterior; and F, anterior views.

Figure 5 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 5. Digitally isolated rostrum and orbital bones of SAM-PK-6536, Mesosuchus browni, in: A, medial; B, anterolateral; and C, posterior views.

Figure 4 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia

Figure 4. Digitally segmented skull of SAM-PK-6536, Mesosuchus browni, in: A, dorsal; and B, ventral views.