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FIG. 9. — Ragechelus sahelica n. gen., n in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 9. — Ragechelus sahelica n. gen., n. sp., Indamane, southwestern Niger, late Maastrichtian; detail of the skull, cavum tympani area, holotype MNHN- RA-2018.0031. Abbreviations: ant, antrum squamosum; cq, commissura quadrati; ica+Et, incisura columellae auris with Eustachian tube. Left lateral view. Scale bar: 2 cm.
FIG. 8. — Ragechelus sahelica n. gen., n in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 8. — Ragechelus sahelica n. gen., n. sp., Indamane, southwestern Niger, late Maastrichtian; detail of the skull, holotype MNHN-RA-2018.0031, showing the rounded carotid foramen for entrance in te besicranium, at the back of the deep cavum pterygoideum, below the (broken here) podocnemidid pterygoid wing; Abbreviations:boc, basioccipital; bsph, basisphenoid; car can, enlarged carotid foramen; cav pter, cavum pterygoideum; pw, break of the pterygoid wing at its posterior base; q, quadrate; q art, area articularis quadrati. Ventral view. Scale bar: 2 cm.
FIG. 7. — Ragechelus sahelica n. gen., n in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 7. — Ragechelus sahelica n. gen., n. sp., Indamane, southwestern Niger, late Maastrichtian; interpretative drawing of the skull, holotype MNHN-RA-2018.0031. Abbreviations: aaq, area articularis quadrati; boc, basioccipital; bsph, basiphenoid; car c, carotid canal; cav pter, cavum pterygoideum; co, condylus occipitalis; col-Et, columella auris with the Eustachian tube passage; cq, commissura quadrati; fpp, foramen palatinum posterius; fp, fenestra postotica; imc, intermediate maxillo-palatine crest; ju, jugal; mc, medial maxillo-palatine crest; ms, muscle insertion zone; mx, maxilla; pal, palatine; pmx, premaxilla; po, postorbital; ppo, processus paroccipitalis opisthotici; pter w, pterygoid wing; ptp, processus trochlearis pterygoideus; q, quadrate. Ventral view. Scale bar: 4 cm.
FIG. 6. — Ragechelus sahelica n. gen., n in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 6. — Ragechelus sahelica n. gen., n. sp., Indamane, southwestern Niger, late Maastrichtian. Lateral view of the skull, holotype MNHN-RA-2018.0031. Abbreviations: an sq, antrum squamosum; co, condylus occipitalis; com q, commissura quadrati; fpp; foramen palatinum posterius; fr, frontal; ica+Et, incisura columellae auris with the Eustachian tube; ju, jugal; l pfr, left prefrontal; mq, meatus quadrati; mx, maxilla; na, external nare; pal, palatine; pfr, prefrontal; pmx, premaxilla; paq, processus articularis quadrati; pmx, premaxilla; po, postorbital; ppo, processus paroccipitalis opisthotici; pro, prootic; pter, pterygoid; ptp, processus trochlearis pterygoideus; q, quadrate; r paq, right processus articularis quadrati; r pter, right pterygoid; soc, supraoccipital; sq, squamosal; V, foramen trigemini; black arrow, position of the foramen stapediotemporale; blue and green dotted lines, hypothetic positions for the skull lateral notch border; red line, border of the palatal medial crest. Scale bar: 4 cm.
FIG. 5. — Ragechelus sahelica n. gen., n in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 5. — Ragechelus sahelica n. gen., n. sp., Indamane, southwestern Niger, late Maastrichtian; photographs of the skull, holotype MNHN-RA-2018.0031: A-F, dorsal, ventral, left lateral, anterior, right lateral and posterior views. Scale bar: 4 cm.
FIG. 3 in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 3. — Geological map of Iullemmeden basin. Extract from Greigert (1961), focused on the northeastern basin part, area of Kao to Ibeceten with Mont Indamane (Mt Igdaman). Legend, from Greigert (1961): Cr 9-8, including (from top to bottom, [Mt Indamane Maastrichtian outcropping]: 1, Upper sandstones; 2, Mosasaurus shales; 3, Lower sandstones. Cr7, lower and middle Senonian, with gypsum [including Ibéceten outcropping]; Cr6, Turonian; Cr6b, Turonian (white limestones); Cr6a, lower Turonian (Nigericeras zone); CR6a-b, lower Turonian and Upper Cenomanian (Neolobites vibrayeani zone, Tegama group sandstones); e III-VI, lower Eocene; ct, terminal continental (simplified); qa2, filled fossil valleys; qd1, fixed oriented recent dunes (barchans); F, fossils at Mont Indamane and Ilatarda.
FIG. 2 in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 2. — Geographical location, northern to southern, of: Mont In Tahout area (Nigeremys locality), Indamane (Ragechelus saherica n. gen., n. sp. locality), Ibeceten (Erymnochelyine locality) and Ilatarda, fossil localities with turtles (stars), in southwestern Niger, Tahoua district between Niamey and Agades, Iullemeden basin, Upper Cretaceous. Purple line, raised edge of the Upper Cretaceous outcropping (symbols: "10" in Fig. 1, "Cr 9-8" in Fig. 3), overhanging the reg with dunes including the Ibeceten Senonian outcropping (Cr7 in Fig. 3).
FIG. 4 in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 4. — Log, simplified stratigraphic section, from Greigert (1966: pl. 37)'s Mont Indamane, presenting 16 banks, from bottom to top: alternately, 1, 3, 5, gypsiferous sandy marls and 2, 4, fine and silty sandstones; at top of 5, large dinosaur site (of Greigert et al. [1954]); 6, grey and black gypsiferous marls; 7, gypsiferous marls; 8, phosphatic breccia: fish, crocodile, batoids, sawfish (bone bed of the new turtle skull); 9, white sandstones: turtles, selachians; 10, black marls, salt; 11, 13, 15, yellow marls [with Libycoceras and Laffiteines]; 12, lumachella, with Rs (Veniella [Roudaireia] ouressensis); 14, lumachella; 16, ferrugineous sandstones (overlying crust). C LS, bank C in Lingham-Soliar (1991 [after David Ward]); D et al., Dikouma et al. (1993, 1994); F, Formation; G, Greigert (1966); MS, banks 8-10, 11/14, 19 and 25 in Moody & Sutcliffe (1991). Not to scale.
FIG. 1 in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context
FIG. 1. — Geological map of the Iullemeden basin, extract from the Geological map of Africa, 1:10 millionth (Thiéblemont & Chêne 2016). Numbers: 1, Quaternary, 2.6-0 Ma, sedimentary; 5, Paleogene to Pleistocene, 66-0.012 Ma, sedimentary; 7, Tertiary, 66-2.6 Ma, sedimentary; 10, Upper Cretaceous, 100.5-66 Ma. Sedimentary; 12, Lower Cretaceous, 145-100.5 Ma, sedimentary; 39, Paleozoic; 45, 46, Proterozoic; 70, 86, 87, Archean. Blue square, area represented Fig. 2 (geographical map). Orange square, area represented in Fig. 3 (Greigert's geological map).
microCT dataset of cybertype - Xyloplax princealberti n. sp. / SMF 6936
<p>A specimen (SMF 6936) preserved in 95% was scanned using a Werth Tomoscope® XS Plus 200 microCT with the following scan parameters: 85 kV voltage, 188 µA generator current, 16 W generator power. Exposure time was 666 ms with a total of 2700 projections (3 projections were averaged). The voxel resolution is 3.56 µm. Surface renderings were generated with the software Drishti v3.1. (National University, Canberra, Australia)</p>
FIGURES 16 – 19 in Eudendrium caraiuru sp. n. (Hydrozoa; Anthoathecata; Eudendriidae) from the southeastern coast of Brazil
FIGURES 16 – 19. Eudendrium caraiuru sp. n. 16, general aspect of a stem; 17, oral view of the hydranth; 18, general aspect of hydranth; 19, hydranth base. Legend: e, groove. Scale bars: 1.0 mm (16); 100 m (17 – 18); 40 m (19).
FIGURES 9 – 15 in Eudendrium caraiuru sp. n. (Hydrozoa; Anthoathecata; Eudendriidae) from the southeastern coast of Brazil
FIGURES 9 – 15. Eudendrium caraiuru sp. n. 9, general aspect of the colony covered by debris. 10, oral view of the hydranth. 11, general aspect of the hydranth. 12, capsule of large microbasic euryteles. 13, primary polyp, derived from larval metamorphosis. 14, young hydranth encapsulated by perisarc. 15, degenerating hydranth. Legends: a, large microbasic euryteles on the hypostome; b, large microbasic eurytele pad on the body of the hydranth; c, perisarc involving hydranth; d, reduced tentacle. Scale bars: 1.0 mm (9); 200 m (10); 300 m (11,13 – 15); 10 m (12).
FIGURE 2. Durckheimia lochi n in Description of Durckheimia lochi n. sp., with an annotated checklist of Australian Pinnotheridae (Crustacea: Decapoda: Brachyura)
FIGURE 2. Durckheimia lochi n. sp., female holotype, AM P 24478, in bivalve mollusc host, Ctenoides ales (Finlay, 1927) (AM C 103731). Photo: I. Loch.
FIGURE 1, A female lateral view, Paratype ZMH K 40074, B in Paranarthrura Hansen, 1913 (Crustacea: Tanaidacea) from the Angola Basin, description of Paranarthrura angolensis n. sp.
FIGURE 1, A female lateral view, Paratype ZMH K 40074, B female dorsal view with detail of cuticula, C Male dorsal view, Paratype ZMH K 40081, D pleon male lateral view (Scale bar = 1 mm), E cephalothorax in ventral view, F Antennule, G Detail of antennule tip, H Antenna, I Detail of antenna tip (Scale bar = 0.5 mm), J uropods (Scale bar = 0.05 mm), K Pleopod. (Scale bar = 0.05 mm).
FIGURES 32 37 in Paracamisia osornensis gen. n., sp. n. (Acari: Oribatida) from Valdivian forest soil in Chile
FIGURES 32 37. Paracamisia osornensis sp. n., scanning electron micrographs: 32 posterior half, ventral aspect (using Robinson backscatter detector), 33 subcapitulum and surrounding structures, ventral aspect (arrow on incision of mental tectum), 34 right coxisternal region, ventral aspect, anterior to lower right (I, II, III coxisterna), 35 legs I and II, right lateral aspect, 36 upper part of right genu I, lateral aspect, showing coupled seta d and solenidion n, plus distally bifurcated seta l ʹ, 37 upper proximal region of right tarsus I, lateral aspect, showing tarsal cluster of seta ft ʹ, solenidion, and famulus (e). Specimens cleaned of cerotegument and debris. Scale 1 bars = 50 m (32, 35), 20 m (33, 34), 5 m (36, 37).
FIGURE 5. Aphyolebias boticarioi, UFRJ 5987 in Moema apurinan sp. n. and Aphyolebias boticarioi sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): two new annual killifishes from the Rio Purus basin, Brazilian Amazon
FIGURE 5. Aphyolebias boticarioi, UFRJ 5987, female, paratype, 32.4 mm SL (one day after collection; pectoral, caudal and anal fins damaged); Brazil: Acre: Porto do Acre: Rio Purus basin.
FIGURE 4. Aphyolebias boticarioi, UFRJ 5986 in Moema apurinan sp. n. and Aphyolebias boticarioi sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): two new annual killifishes from the Rio Purus basin, Brazilian Amazon
FIGURE 4. Aphyolebias boticarioi, UFRJ 5986, male, holotype, 42.1 mm SL (one day after collection; caudal and anal fins damaged); Brazil: Acre: Porto do Acre: Rio Purus basin.
FIGURE 2. Moema apurinan, UFRJ 5981 in Moema apurinan sp. n. and Aphyolebias boticarioi sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): two new annual killifishes from the Rio Purus basin, Brazilian Amazon
FIGURE 2. Moema apurinan, UFRJ 5981, female, paratype, 44.4 mm SL (one day after collection); Brazil: Acre: Porto do Acre: Rio Purus basin.
FIGURE 1. Moema apurinan, UFRJ 5980 in Moema apurinan sp. n. and Aphyolebias boticarioi sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): two new annual killifishes from the Rio Purus basin, Brazilian Amazon
FIGURE 1. Moema apurinan, UFRJ 5980, male, holotype, 52.5 mm SL (one day after collection); Brazil: Acre: Porto do Acre: Rio Purus basin.
FIGURE 2 in First occurrence of the genus Paraleucilla (Calcarea, Porifera) in the Atlantic Ocean: P. m a g n a sp. nov.
FIGURE 2. External morphology of Paraleucilla magna sp. nov. A — Sponge in situ; B — Preserved holotype; C — Detail of osculum and atrial cavity of holotype.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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