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Fig. 9 in A redescription of TraCheloSaUrUS fiSCheri from the Buntsandstein (Middle Triassic) of Bernburg, Germany: the first European DinoCephaloSaUrUS-like marine reptile and its systematic implications for long-necked early

Fig. 9 Close-ups of the appendicular elements of Trachelosaurus fischeri. A Right ilium in lateral view and tentatively identified metetarsal. B Left femur in ventral view. C Right (?) pubis in medial(?) view. Abbreviations: ac, acetabulum; af, articular facet; cv, cervical vertebra; for, foramen; ilb, iliac blade; isp, ischial peduncle; itt, internal trochanter; mt, metatarsal; pac, postacetabular process; pfo, pubic foramen; pup, pubic peduncle

Fig. 3 in A redescription of TraCheloSaUrUS fiSCheri from the Buntsandstein (Middle Triassic) of Bernburg, Germany: the first European DinoCephaloSaUrUS-like marine reptile and its systematic implications for long-necked early

Fig. 3 Overview of MLU.GeoS.1612. A–B preserving the majority of the presacral vertebrae and appendicular elements. Cervical vertebrae are indicated with capitalised letters, dorsal and sacral vertebrae are indicated with lower case letters, blue dots indicate bifurcated cervical ribs. The element indicated with an asterisk represents a badly broken cervical vertebra, which could be identified based on plate 31 of Broili and Fischer (1918). The two ribs indicated with † and ‡, respectively, correspond to those listed in Table 4. Abbreviations: aue, autopodial element; cav, caudal vertebra; fe, femur; fr v, fragmentary vertebra; il, ilium; mt, metatarsal; sv, sacral vertebra

Fig. 9 in Orthoceratoid and coleoid cephalopods from the Middle Triassic of Switzerland with an updated taxonomic framework for Triassic Orthoceratoidea

Fig. 9 Lectotype and paralectotype of Trematoceras elegans (MÜnster, 1841) from the Carnian of the Cassian Formation. A, C SNSB-BSPG AS VII 1014, lectotype. B, D–F SNSB-BSPG AS VII 1015, paralectotype. A External (lateral?) view. B Apertural view. C Longitudinal section. D Apical view. E Lateral view, venter right. F Ventral view

Fig. 1 in The research history of the Middle Triassic fishes of Monte San Giorgio: getting out of the shadow of aquatic reptiles

Fig. 1 Title paper of the publication by Erik Andersson (1916) on some Triassic fish remains from Monte San Giorgio

Fig. 2 in Orthoceratoid and coleoid cephalopods from the Middle Triassic of Switzerland with an updated taxonomic framework for Triassic Orthoceratoidea

Fig. 2 Orthoceratoids from the Besano Formation (Middle Triassic) of the Monte San Giorgio, Ticino, Switzerland. A–H: Trematoceras cf. elegans (MÜnster, 1841). A PIMUZ 39056, partially fixed with silicon, bed 41. B PIMUZ 39487, bed 87. C-E PIMUZ 39586, sectioned specimen, bed 45. F–G PIMUZ 39029, bed 61. H PIMUZ 39064, bed 162

Fig. 6 in A redescription of TraCheloSaUrUS fiSCheri from the Buntsandstein (Middle Triassic) of Bernburg, Germany: the first European DinoCephaloSaUrUS-like marine reptile and its systematic implications for long-necked early

Fig. 6 Close-ups of selected cervical vertebrae and ribs of Trachelosaurus fischeri. A Anteriormost preserved cervical vertebrae (elements A–C), including the tentatively identified axis and possible atlantal elements. B Cervical ribs with bifurcating distal ends. C Mid-cervical vertebrae (elements L–N). Abbreviations: at, atlantal element; atna, atlantal neural arch; atr, atlantal rib, axc, axis centrum; axna, axis neural arch; cap, capitulum; cv, cervical vertebra; cvr, cervical rib; diap, diapophysis; epp, epipophysis; feap, free-ending anterior process; fs, fish scale; lam, lamina; ns, neural spine; pap, parapophysis; pdp, posterodorsal process; poz, postzygapophysis; prz, prezygapophysis; pvp, posteroventral process; rug, rugosity; tub, tuberculum

Fig. 2 in A redescription of TraCheloSaUrUS fiSCheri from the Buntsandstein (Middle Triassic) of Bernburg, Germany: the first European DinoCephaloSaUrUS-like marine reptile and its systematic implications for long-necked early

Fig. 2 Overview of MLU.GeoS.1612 and its sedimentary features. A, Historical label on the slab. B, Overview of MLU.GeoS.1612, the holotype of Trachelosaurus fischeri; the bracketed lower case letters correspond to the different slabs of which the specimen is composed. The asterisks (*) indicate tetrapod footprints preserved on the slabs. C–D Slab in cross-section, with trough cross-lamination (C) and the two intervals with an arrow pointing at their boundary (D). E Sinuous and ramified structures on the top surface (opposite to the surface preserving bones and footprints), including a close-up on the right. F Round structures. G Squared structure. H Tetrapod footprint (left manus) previously mentioned in Broili and Fischer (1918). Structures in F–H are in convex hyporelief, and their location is marked with matching upper case letters on the overview of the specimen in B

Fig. 7 in A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications

Fig. 7 Right hindlimb of Dianmeisaurus mutaensis sp. nov. (HFUT MT-21-08-001). A photo; B interpreted drawing. as, astragalus; d, digit; f, femur; fi, fibula; il, ilium; ti, tibia. Scale bars equal 1 mm

Fig. 8 in A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications

Fig. 8 Strict consensus tree showing phylogenetic relationships of eosauropterygians. Bootstrap values over 50% (with 1000 replicates) are indicated in the tree

Fig. 11 in A redescription of TraCheloSaUrUS fiSCheri from the Buntsandstein (Middle Triassic) of Bernburg, Germany: the first European DinoCephaloSaUrUS-like marine reptile and its systematic implications for long-necked early

Fig. 11 Skeletal reconstruction of Trachelosaurus fischeri and comparison with other long-necked, aquatic tanysaurians. A Skeletal reconstruction and interpretive silhouette of Trachelosaurus fischeri in left lateral view and anteroposterior view of the mid-anterior portion of the torso (reconstructions by E. M.); based on the elements preserved on MLU.GeoS.1612. B Comparison of Trachelosaurus fischeri with Dinocephalosaurus orientalis (from Spiekman et al., 2024; reconstruction by S. N. F. S.), Tanystropheus hydroides, and Tanystropheus longobardicus (both from Spiekman et al., 2020a; reconstructions by Beat Scheffold); the outline of a 170-cm-tall human in scuba diving equipment is used to indicate the scale

Fig. 4 in A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications

Fig. 4 Pectoral region of Dianmeisaurus mutaensis sp. nov. (HFUT MT-21-08-001). A photo; B interpreted drawing. cl, clavicle; cv23, 23rd cervical vertebra; dv1, 1st dorsal vertebra; h, humerus; sc, scapula. Scale bars equal 1 mm

Fig. 3 in A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications

Fig. 3 The skull of Dianmeisaurus mutaensis sp. nov. (HFUT MT-21-08-001). A photo; B, interpreted drawing. an, angular; ar, articular; ata, atlas arch; atc, atlas centrum; axc, axial centrum; bo, basioccipital; c3, 3rd cervical centrum; d, dentary; eo-op, exoccipital-opisthotic complex; f, frontal; fo, fontanelle; j, jugal; m, maxilla; n, nasal; p, parietal; par, prearticular; pm, premaxilla; po, postorbital; pof, postfrontal; prf, prefrontal; q, quadrate; r3, 3rd cervical rib; sa, surangular; so, supraoccipital; sq, squamosal. The red arrow marks the pit on the premaxilla-maxilla suture. Scale bars equal 1 mm

Fig. 1 in A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications

Fig. 1 The geologic map showing the quarry where Dianmeisaurus mutaensis sp. nov. (HFUT MT-21-08-001) was discovered (updated after Hu & Liu, 2022). E, Palaeogene; T2-3f, Falang Formation, Ladinian-Carnian, Middle-Late Triassic;T2y, Yangliujing Formation, Anisian-Ladinian, Middle Triassic; T g2, Upper Member of Guanling Formation, Anisian, Middle Triassic;T g1, Lower Member of Guanling Formation, Anisian, Middle Triassic; T, Lower 2 2 1 Triassic

Fig. 6 in A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications

Fig. 6 Sacral region of Dianmeisaurus mutaensis sp. nov. (HFUT MT-21-08-001). A photo; B interpreted drawing. cav, caudal vertebra; dr, dorsal rib; dv, dorsal vertebra; fi, fibula; il, ilium; is, ischium; pu, pubis; sr, sacral rib; sv, sacral vertebra. Scale bars equal 1 mm

Fig. 2 in A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications

Fig. 2 The holotype of Dianmeisaurus mutaensis sp. nov. (HFUT MT-21-08-001). A the skeleton in dorsal view; B the counterpart of A (natural mold). Scale bars equal 1 cm

Fig. 5 in A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications

Fig. 5 Right forelimb of Dianmeisaurus mutaensis sp. nov. (HFUT MT-21-08-001). A photo; B interpreted drawing. d, digit; eng, entepicondylar groove; h, humerus; r, radius; sc, scapula; u, ulna. Scale bars equal 1 mm

Fig. 8 in A redescription of TraCheloSaUrUS fiSCheri from the Buntsandstein (Middle Triassic) of Bernburg, Germany: the first European DinoCephaloSaUrUS-like marine reptile and its systematic implications for long-necked early

Fig. 8 Close-up of the proximal caudal region and partial gastral basket of Trachelosaurus fischeri. The caudal centra marked with α, β, and γ correspond to the elements that are indicated the same in Table 5. Abbreviations: cac, caudal centrum; car, caudal rib; cav, caudal vertebra; gas, gastralia; prz, prezygapophysis; sv, sacral vertebra; tp, transverse process

Cross section shape: circular elliptical unknown Siphuncle position: central marginal unknown Fig. 4 Morphometrics of orthoconic cephalopods from the Besano Formation. Measurements are compared with discrete characters of the shell. Orange circles represent definite and orange crosses likely orthoceratoids, while blue triangles represent definite and blue crosses likely coleoids. Black crosses are indeterminable. A Apical angle, calculated from length and diameters of the specimens. B Maximum diameter in Orthoceratoid and coleoid cephalopods from the Middle Triassic of Switzerland with an updated taxonomic framework for Triassic Orthoceratoidea

Cross section shape: circular elliptical unknown Siphuncle position: central marginal unknown Fig. 4 Morphometrics of orthoconic cephalopods from the Besano Formation. Measurements are compared with discrete characters of the shell. Orange circles represent definite and orange crosses likely orthoceratoids, while blue triangles represent definite and blue crosses likely coleoids. Black crosses are indeterminable. A Apical angle, calculated from length and diameters of the specimens. B Maximum diameter

Fig. 3 in Orthoceratoid and coleoid cephalopods from the Middle Triassic of Switzerland with an updated taxonomic framework for Triassic Orthoceratoidea

Fig. 3 Ticinoteuthis chuchichaeschtli gen. et sp. nov. from the Besano Formation (Middle Triassic) of the Monte San Giorgio, Ticino, Switzerland and a co-occurring orthoceratoid for taphonomic comparison. A–D PIMUZ 39491, holotype, bed 112 A Lateral view. B Adapical view of preserved phragmocone, exposing the ventral position of the siphuncle. C Lateral view of preserved phragmocone, exposing faint traces of inclined septa. D Lateral view of adapical external mould, exposing potential traces of septa. E–G PIMUZ 39493, T. chuchichaeschtli gen. et sp. nov., bed 94. E Lateral view. F Enlarged view of longitudinal ribs. G Lateral view of counterpart. H PIMUZ 39060, bed 94, likely orthoceratoid with similar longitudinal ribs. Note the irregularity in these structures, suggesting that these represent a taphonomic artefact. Abbreviations: si = siphuncle, se = septa

Fig. 10 in Orthoceratoid and coleoid cephalopods from the Middle Triassic of Switzerland with an updated taxonomic framework for Triassic Orthoceratoidea

Fig. 10 Reconstructions of non-ammonoid cephalopods from the Anisian of Monte San Giorgio. A Breviconoteuthis breviconus (Reis, 1907); B Mojsisovicsteuthis sp.; C Ticinoteuthis chuchichaeschtli gen. et sp. nov.; D Trematoceras elegans (MÜnster, 1841); F Enoploceras rieberi Pieroni, 2022