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Fig. 6 in An enigmatic new archosauriform from the Carnian- Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina

Fig. 6. Photographs of selected dorsal vertebrae (D6–D8) of the archosauriform Incertovenator longicollum gen. et sp. nov. (PVSJ 397) from Ischigualasto Formation (Carnian–Norian), Hoyada de Ischigualasto, Argentina; in right (A1) and left (A2) lateral views. Arrows indicate anterior direction.

Fig. 4 in An enigmatic new archosauriform from the Carnian- Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina

Fig. 4. Photograph (A1) and interpretative drawing (A2) of articulated pair of anterior cervical vertebrae of the archosauriform Incertovenator longicollum gen. et sp. nov. (PVSJ 397) from Ischigualasto Formation (Carnian–Norian), Hoyada de Ischigualasto, Argentina; in right lateral view. Posterior view of neural spine detailed in inset (stippled lines). Grey coloring represents broken bones and other fragments. Arrow indicates anterior direction.

Fig. 3 in An enigmatic new archosauriform from the Carnian- Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina

Fig. 3. Photograph (A1) and interpretative drawing (A2) of isolated anterior cervical vertebra of the archosauriform Incertovenator longicollum gen. et sp. nov. (PVSJ 397) from Ischigualasto Formation (Carnian–Norian), Hoyada de Ischigualasto, Argentina; in right lateral view. Grey coloring represents broken bones and other fragments.Arrow indicates anterior direction.

Fig. 5 in An enigmatic new archosauriform from the Carnian- Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina

Fig. 5. Photograph (A1) and interpretative drawing (A2) of the articulated series of dorsal vertebrae (D6–D10) of the archosauriform Incertovenator longicollum gen. et sp. nov. (PVSJ 397) from Ischigualasto Formation (Carnian–Norian), Hoyada de Ischigualasto, Argentina; in right lateral view. Gray coloring represents broken bones and sediment. Arrow indicates anterior direction.

Fig. 7 in An enigmatic new archosauriform from the Carnian- Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina

Fig. 7. Photograph of articulated series of sacral vertebrae (S1, S2) and anterior caudal vertebrae (Ca1–Ca5) of the archosauriform Incertovenator longicollum gen. et sp. nov. (PVSJ 397) from Ischigualasto Formation (Carnian–Norian), Hoyada de Ischigualasto, Argentina; in right lateral view. Arrow indicates anterior direction.

Fig. 2 in An enigmatic new archosauriform from the Carnian- Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina

Fig. 2. Photographs (A1, A2) and interpretative drawings (A3, A4) of the axis, third cervical vertebra and third cervical rib of the archosauriform Incertovenator longicollum gen. et sp. nov. (PVSJ 397) from Ischigualasto Formation (Carnian–Norian), Hoyada de Ischigualasto, Argentina; in left (A1, A3) and right A2, A4) lateral views. Arrows indicate anterior direction.

Fig. 1 in An enigmatic new archosauriform from the Carnian- Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina

Fig. 1. Geographic and stratigraphic position of the holotype specimen of Incertovenator longicollum gen. et sp. nov. (PVSJ 397). A, B. Geological map of the Ischigualasto–Villa Unión Basin. Asterisk indicates the type locality. C. Stratigraphic section of the Ischigualasto Formation. Modified from Martínez 1994.

Fig. 7 in Dipnoan from the Upper Triassic of East Greenland and remarks about palaeobiogeography of Ptychoceratodus

Fig. 7. Map of sedimentation environments in north-western Europe and south-eastern Greenland in Norian with marked occurrences of Ptychoceratodus rectangulus. Based on McKie and Williams (2009) and Ziegler (1998).

Fig. 8 in Dipnoan from the Upper Triassic of East Greenland and remarks about palaeobiogeography of Ptychoceratodus

Fig. 8. Skull roof of dipnoan Ptychoceratodus rectangulus. A. Hypothetical fish silhouette with marked position of the skull roof. B. Skull roof reconstruction, originally preserved structures on the left side. Based on: SMNS 19707, KNK 4158, 4159, 4162, 4165. Arrows indicate sutures for corresponding bones.

Fig. 6 in Dipnoan from the Upper Triassic of East Greenland and remarks about palaeobiogeography of Ptychoceratodus

Fig. 6. Dental plates and jaw bones of dipnoan Ptychoceratodus rectangulus (Linck, 1936) from the Carlsberg Fjord Beds, Fleming Fjord Formation (Upper Triassic), Macknight Bjerg, East Greenland. A. KNK 4154, upper dental plate with pterygopalatine bone in occlusal view. B. KNK 4156, lower dental plate in occlusal (B1, B2) and ventral (B3, B4) views. C. KNK 4157, lower dental plate with fragmentary prearticular bone in occlusal view. D. KNK 4164, incomplete dental plate in occlusal view.

Fig. 4 in Dipnoan from the Upper Triassic of East Greenland and remarks about palaeobiogeography of Ptychoceratodus

Fig. 4. Skull roof bones of dipnoan Ptychoceratodus rectangulus (Linck, 1936) from the Carlsberg Fjord Beds, Fleming Fjord Formation (Upper Triassic), Macknight Bjerg, East Greenland. A. KNK 4158, KLMN+3 bone in dorsal (A1, A2) and ventral (A3, A4) views. B. KNK 4159, XYZ bone in lateral B1, B2) and medial (B3, B4) views. Arrows indicate sutures for corresponding bones.

Fig. 3 in Dipnoan from the Upper Triassic of East Greenland and remarks about palaeobiogeography of Ptychoceratodus

Fig. 3. Principal Component Analysis of species of Ptychoceratodus dental plates. A. Lower dental plates. B. Upper tooth plates. In the analysis we used α, δ1, δ2, δ3, BCp, C1C2, and C1Cp measurements sensu Vorobyeva and Minikh (1968). White rectangles mean specimens from Macknight Bjerg locality (East Greenland) described herein.

Fig. 2 in Dipnoan from the Upper Triassic of East Greenland and remarks about palaeobiogeography of Ptychoceratodus

Fig. 2. Scheme of the measured dimensions of dental plates of Triassic dipnoans. Abbreviations: B, mediolingual junction; C1, C2, C3, C4, ends of corresponding ridges; Cp, end of the last ridge; α, angle between medial and lingual margin; ð1, ð2, ð3, angles between last ridge and corresponding ridges; BCp, BC1, BC2, C1C2, C2C3, C1Cp, C2Cp, distances between corresponding points. Based on Frederickson and Cifelli (2017).

Fig. 1 in Dipnoan from the Upper Triassic of East Greenland and remarks about palaeobiogeography of Ptychoceratodus

Fig. 1. Study area map (A) and stratigraphic column (B) with marked outcrops and age of the stratigraphic position of examined material. Based on Bengaard and Henriksen (1984) and Clemmensen et al. (1998).

Fig.9 - MSNM i28038. Dicerocardium ragazzonii Stoppani 1860-1865 in The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy

Fig.9 - MSNM i28038. Dicerocardium ragazzonii Stoppani 1860-1865. Plaster reconstruction of a right valve, not illustrated by Stop-Stop-pani. x 0.42 ca.

Fig.8 - MSNM i28039. Dicerocardium ragazzonii Stoppani 1860-65 in The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy

Fig.8 - MSNM i28039. Dicerocardium ragazzonii Stoppani 1860-65. Plaster reconstruction of an internal mould, similar to the form illustrated by Stoppani at Tav. 55. A) anterior view. B) posterior view. x 0.57 ca.

Fig.5 - MSNM i28035. Dicerocardium curionii Stoppani 1860-65 in The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy

Fig.5 - MSNM i28035. Dicerocardium curionii Stoppani 1860-65; plaster cast of a specimen from Stoppani collection. A) anterior view. B) lateral view. C) posterior view. Stoppani, 1860-65, Tav. 51, fig. 1-3. x 0.43 ca.

Fig.2 - MSNM i28032. Conchodon infraliasicus Stoppani, 1860-65 in The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy

Fig.2 - MSNM i28032. Conchodon infraliasicus Stoppani, 1860-65. Plaster cast of the type; the original specimen is lost. Stoppani, 1860-65, Tav. 38, figg. 3-5. x 0.54 ca.

Fig.4 - MSNM i28034 a,b in The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy

Fig.4 - MSNM i28034 a,b. Plaster reconstruction of the shell of Dicerocardium jani Stoppani 1860-65, as in Stoppani, 1860-65, Tavv. 41-42. A) anterior view. B) posterior view. x 0.28 ca.

Fig.1 - MSNM i28031 in The Stoppani Collection of Large Bivalves (Bivalvia, Megalodontida) from the Upper Triassic of Lombardy, Italy

Fig.1 - MSNM i28031. Original fragment of left valve of Dicerocardium jani Stoppani, 1860-65. Stoppani 1860-65, Tav. 46, fig. 3. x 1 ca.