Find research datasets worth reusing

Fig. 1 in Isolated theropod teeth from the Middle Jurassic of Niger and the early dental evolution of Spinosauridae

Fig. 1. Theropod teeth from the Middle Jurassic Tegama Group, Agadez, Niger. A. MUPE HB-142 in labial (A1), lingual (A2), distal (A3), and basal (A5) views, close-up (A4). B. MUPE HB-118 in lateral (B1, B2), distal (B3), and basal (B5) views, close-up (B4). C. MUPE HB-125 in lateral (C1, C2) and distal (C3) views. D. Spinosaurid tooth, MUPE HB-87 in distal (D1), lingual (D2), mesial (D3), and labial (D4) views; close-up view of the labial side (D5); note the deeply veined enamel surface texture and the shape and size of the distal denticles.

Fig. 3 in Isolated theropod teeth from the Middle Jurassic of Niger and the early dental evolution of Spinosauridae

Fig. 3. Morphospace occupied by theropod teeth of the database used in this paper and those of the HB site using the results of the discriminant function analyses (A). Teeth that delimit the morphospace of each taxon (B). The colour convex hulls correspond to the morphospaces delineated by different theropod clades.

Fig. 2 in Isolated theropod teeth from the Middle Jurassic of Niger and the early dental evolution of Spinosauridae

Fig. 2. Tooth measurements and dimensions used in this study. Theropod dental anatomy and variables used, in lateral and basal views (redrawn from Smith et al. 2005). AL, apical length; CA, crown angle; CBL, crown base length; CBR, crown base ratio; CBW, crown base width; CH, crown height; CHR, crown height ratio; DA, distal denticles in the apical section. DB, distal denticles in the basal section. DC, distal denticles in the central section. DSDI, denticle size difference index. MA, mesial denticles in the apical section. MB, mesial denticles in the basal section. MC, mesial denticles in the central section.

Fig. 6 in Isolated theropod teeth from the Middle Jurassic of Niger and the early dental evolution of Spinosauridae

Fig. 6. Generalized palaeogeographic locations of spinosaurids (white) and the specimen of HB site (black), through time from Bajocian–Bathonian (A), Tithonian (B), Barremian−Aptian (C), and Albian−Cenomanian (D). Courtesy of Ron Blakey (http://jan.ucc.nau.edu/~rcb7/mollglobe.html), modified and actualized after Bertin (2010).

Fig. 7 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 7. Gryphaeid oyster Pernostrea mesezhnikovi sp. nov., Lower Volgian, Lopsiya River, Northern Urals. A. TsSGM 2048/17, holotype, interior of right valve (A1), exterior of left valve with attached oyster (A2). B. TsSGM 2048/24, paratype, interior of right valve. C. TsSGM 2068/33, paratype, interior of left valve.

Fig. 11 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 11. Gryphaeid oyster Pernostrea? robusta sp. nov., Middle Volgian, Yatriya River, Subpolar Urals,. A. TsSGM 2068/37, interior of right valve. B. TsSGM 2068/36, interior of right valve. C. TsSGM 2068/35, interior of right valve. D. TsSGM 2068/38, interior of left valve attached to other oyster shell.

Fig. 10 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 10. Comparison of morphology Deltoideum vs. Pernostrea. A, C. Deltoideum delta (Smith, 1817) (labelled as "Ostrea deltoidea"), Kimmeridgian, La Hève, France. A. NHM 204314, interior of right valve. C. NHM 204314, interior of left valve. B, D. Pernostrea mesezhnikovi sp. nov., Lower Volgian, Lopsiya River, Northern Urals. B. TsSGM 2068/30, interior of right valve. D. TsSGM 2068/84, interior of left valve.

Fig. 3 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 3. Main morphological characters of oysters. A. Left valve of Phygraea (Gryphaeidae, Pycnodonteinae), TsSGM 2068/88, inner view. B. Left valve of Crassostrea (Flemingostreidae, Crassostreinae), TsSGM 2068/13, inner view. C. Left valve of Pernostrea (Gryphaeidae, Gryphaeinae), TsSGM 2068/2, inner view.

Fig. 6. Gryphaeid oysters from the subgenus Boreiodeltoideum. A, E in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 6. Gryphaeid oysters from the subgenus Boreiodeltoideum. A, E. Deltoideum (Boreiodeltoideum) borealis sp. nov. A. TsSGM 2068/31, paratype, Lower Kimmeridgian, Lopsiya River, Northern Urals; exterior (A1) and interior (A2) of left valve. E. TsSGM 150/3887, holotype, Lower Kimmeridgian, Khatanga depression, north of Eastern Siberia; interior of RV (E1) and exterior of LV (E2). B–D, F. Deltoideum (Boreiodeltoideum) praeanabarensis Zakharov, 1966), Lower Volgian, Dyabaka-Tari River, north of Eastern Siberia. B. TsSGM 2068/10, view on left (B1) and right (B2) valves. C. TsSGM 2068/57, interior of right valve. D. TsSGM 2068/8, exterior (D1) and interior (D2) of left valve. F. TsSGM 150/2031, interior of left valve.

Fig. 9 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 9. Gryphaeid oyster Pernostrea mesezhnikovi sp. nov., Lower Volgian, Lopsiya River, Northern Urals. A. TsSGM 2048/23, left (A1) and right (A2) valve views, view from posterior side (A3). B. TsSGM 2068/34, left (B1) and right (B2) valve views. C. TsSGM 2068/32, exterior (C1) and interior (C2) of left valve, view from anterior side (C3).

Fig. 5 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 5. Microstructure of studied gryphaeid oysters. A. Deltoideum delta (Smith, 1817), TsSGM 2068/87; Kimmeridgian, Dorset, England. B. Pernostrea uralensis (Zakharov, 1972), TsSGM 2068/45; Upper Volgian, Maurynya River, eastern slopes of the Northern Urals. Microstructure (A1, B1), cross section (A2, B2). RF, regularly foliated structure; HCF,?herringbone cross-foliated structure.

Fig. 1 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 1. Geographical position of the studied oysters locations: 1, Lopsiya River; 2, Tolya River; 3, Maurynya River; 4, Yatriya River; 5, Boyarka River; 6, Bol'shaya Romanikha River; 7, Dyabaka-Tari River (after Zakharov 1966; Zakharov and Mesezhnikov 1974).

Fig. 4 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 4. Measurements of morphometric parameters of oyster shells. D1, distance between posterior adductor muscle scar and anterior valve margin; D2, distance between posterior adductor muscle scar and posterior valve margin; D3, distance between posterior adductor muscle scar and ventral margin; D4, distance between posterior adductor muscle scar and dorsal margin; H, shell height; HCF, herringbone cross-foliated structure; Hla, ligament area height; Hpam, posterior adductor muscle scar height; L, shell length; LA, ligament area; LV, left valve; Lab, anterior bourrelet length; Lla, ligament area length; Lpam, posterior adductor muscle scar length; Lpb, posterior bourrelet length; Lr, resilifer length; PAM, posterior adductor muscle scar; RF, regularly foliated structure; RV, right valve.

Fig. 8 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review

Fig. 8. Gryphaeid oyster Pernostrea mesezhnikovi sp. nov., Lower Volgian, Lopsiya River, Northern Urals. A. TsSGM 2068/28, paratype, details of right valve sculpture: fine radial striae (A1), exterior with Gastrochaenolites (A2), interior (A3). B. TsSGM 2048/21, interior of right valve. C. TsSGM 2068/29, interior of right valve.

Fig. 1. A in Sauropod dinosaur remains from a new Early Jurassic locality in the Central High Atlas of Morocco

Fig. 1. A. Geological map of the Haute Moulouya Basin, Central High Atlas of Morocco, showing the location of the NHMUK PV R36834 site (based on Saâdi et al. 2012). B. Geographic location of the studied area (asterisk).

Fig. 3 in Sauropod dinosaur remains from a new Early Jurassic locality in the Central High Atlas of Morocco

Fig. 3. Line drawings of cervical vertebrae of Eusauropoda indet. (NHMUK PV R36834) from the Early Jurassic of the Haute Moulouya Basin, Morocco. Vertebra 1 (A) and vertebra 2 (B), in right lateral (A, B) and left lateral (A, B), anterior (A, B), posterior (A, B), ventral (A, B), and dorsal (A, B) 1 1 2 2 3 3 4 4 5 5 6 6 views.

Fig. 5 in Sauropod dinosaur remains from a new Early Jurassic locality in the Central High Atlas of Morocco

Fig. 5. Strict consensus trees obtained from addition of NHMUK PV R36834 to the data matrices of Carballido et al. 2015 (A) and McPhee et al. 2015 (B). Black circle indicates node for Eusauropoda. Taxa basal to Sauropoda collapsed for simplicity.

Fig. 4. Morphological comparisons between Lower and Middle Jurassic African sauropod middle cervical vertebrae. A in Sauropod dinosaur remains from a new Early Jurassic locality in the Central High Atlas of Morocco

Fig. 4. Morphological comparisons between Lower and Middle Jurassic African sauropod middle cervical vertebrae. A. Pulanesaura (BP/1/6199; McPhee et al. 2015: fig. 4). B. Jobaria tiguendis (MNN TIG F40-49; PDM personal observation 2013). C. Eusauropoda indet. (NHMUK PV R36834). D. Spinophorosaurus nigerensis (Remes et al. 2009: fig. 3A). Scale bars 100 mm.

opencc-by-4.0Sep 2019View details →

Fig. 3. Comparison between teleosauroid thalattosuchians Mystriosaurus laurillardi Kaup, 1834 in The mystery of Mystriosaurus: Redescribing the poorly known Early Jurassic teleosauroid thalattosuchians Mystriosaurus laurillardi and Steneosaurus brevior

Fig. 3. Comparison between teleosauroid thalattosuchians Mystriosaurus laurillardi Kaup, 1834 (HLMD V946-948, holotype), lower Toarcian of Altdorf (southern Germany) (A), Mystriosaurus laurillardi Kaup, 1834 NHMUK PV OR 14781, holotype of Steneosaurus brevior Blake, 1876, lower Toarcian of Whitby (Yorkshire, UK) (B), and Steneosaurus bollensis (Jäger, 1828) (PMU R161, RE 551.762.130 A 0248), lower Toarcian of Holzmaden (southwestern Germany) (C, D, respectively). Anterior portion of rostrum in lateral (A1, B1, C) and anterior (A2, B2, D) views, showing the ventrally deflected premaxilla and the anteriorly facing external naris (en). Not to scale.