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617 results for “Early Jurassic”
Figure 6 in Scelidosaurus harrisonii (Dinosauria: Ornithischia) from the Early Jurassic of Dorset, England: biology and phylogenetic relationships
Figure 6. Scelidosaurus. An interpretation of the cranial keratinous scute pattern on the skull and mandible in (A) lateral and (B) dorsal views. Abbreviations: asc, angular scute; fsc, frontal scute; dsc, dentary scute or sheath; hsc, occipital horn scute; itsc, infratemporal scutes; jsc, jugal arch scutes; lsc, lacrimal scute; msc, maxillary scute (there may have been several); nmsc, nasal median scute; nsc, nasal scutes restored as overlapping plates; pdsc, predentary scute (rhamphotheca); posc, postorbital crater-like scute; qjsc, quadratojugal–quadrate scute; rsc, rhamphothecal scute of the premaxilla; sosc, supraorbital (brow-ridge) scute (there may have been several); stsc, supratemporal scutes; tym, tympanic membrane;?, area on the surface of the lacrimal lamina that is devoid of exostoses and may mark the location of a diverticulum of a cranial sinus.
Figure 3. Scelidosaurus harrisonii Owen, 1861 in Scelidosaurus harrisonii (Dinosauria: Ornithischia) from the Early Jurassic of Dorset, England: biology and phylogenetic relationships
Figure 3. Scelidosaurus harrisonii Owen, 1861 (the lectotype – NHMUK R1111). The encased skeleton restored as it might have appeared when first discovered, exposed on a series of more or less contiguous blocks of areno-argillaceous limestone (marlstone). The majority of the neck and both forelimbs may have been present originally but were not recovered by the quarrymen who excavated the skeleton.
Figure 2. Scelidosaurus harrisonii Owen, 1861 in Scelidosaurus harrisonii (Dinosauria: Ornithischia) from the Early Jurassic of Dorset, England: biology and phylogenetic relationships
Figure 2. Scelidosaurus harrisonii Owen, 1861 (LYMPH 1998 6.1-6.7). The small ('foetal') specimen from Charmouth. Part of the paratype series belonging to the name S. harrisonii. These specimens belong to a small individual and appear to be associated. They were illustrated in Richard Owen's first monograph (Owen, 1861: tab. III).
Figure 9 in Scelidosaurus harrisonii (Dinosauria: Ornithischia) from the Early Jurassic of Dorset, England: biology and phylogenetic relationships
Figure 9. Scelidosaurus. Attempted reconstruction of the posterodorsal region of the skull showing the general disposition of the stapes–extrastapes, middle ear cavity and tympanum. Abbreviations: bo, basioccipital condyle; cnVII, foramen for cranial nerve VII; est, extrastapes (reconstructed); pap, paroccipital process; Pro, proötic; Q, quadrate; Qj, quadratojugal; rw, round window (fenestra rotunda); Sq, squamosal; st, stapes; tym, tympanic annulus and membrane (reconstructed). Shaded area: reconstruction of the middle ear cavity and a ventral branch leading to the throat (Eustachian tube).
Figure 21 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 21. Life reconstruction of the non-averostran neotheropod Sarcosaurus woodi from the late Hettangian−early Sinemurian of central England. Artwork by Mark Witton, who retains the copyright.
Figure 20 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 20. Comparison among partial ilia in lateral view (A, B) and tibiae in distal view (C−J) of selected neotheropod species. Dilophosaurus wetherilli (A, F), Sarcosaurus woodi (B, G, H), Coelophysis bauri (C), Liliensternus liliensterni (D), Zupaysaurus rougieri (E), Tachiraptor admirabilis (I) and Piatnitzkysaurus floresi (J). UCMP 37302 (A), NHMUK PV R4840 (B), AMNH unnumbered, reversed (C), HMN MB.R. 2175 (D), PULR 076 (E), UCMP 77270 (F), composite reconstruction using WARMS G668, 680 (G), NHMUK PV R3542 (H), LPRP/USP 0747, cast of IVIC-P-2867 (I) and MACN-Pv CH 895, reversed (J). Arrows point towards anterior direction. Abbreviations: fap, facet for reception of ascending process of astragalus; isp, ischiadic peduncle; pla, plaster; plp, posterolateral process; pmr, posteromedial ridge; pmn, posteromedial notch; poap, postacetabular process; prap, preacetabular process; pub, pubis; vmbf, ventromedial margin of brevis fossa. C−J, not to scale.
Figure 19 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 19. Time-calibrated strict consensus tree showing the phylogenetic relationships of selected non-neotheropod and all neotheropod species sampled in the phylogenetic analysis. Values next to each branch represent Bremer support, absolute bootstrap frequency, and GC bootstrap frequency, respectively. Thick black bars with a vertical line represent the chronostratigraphic uncertainty of taxa and thick black bars without a vertical line represent biochrons.
Figure 18 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 18. Right tibia of referred specimen of Sarcosaurus woodi, NHMUK PV R3542 (holotype of 'Sarcosaurus andrewsi'). Photographs (A−F) and surface scan (G) in lateral (A), medial (B), anterior (C), posterior (D), proximal (E), distal (F) and medial and slightly anterior (G) views. Arrows point towards anterior direction. Abbreviations: adt, anterior diagonal tuberosity; cn, cnemial crest; fap, facet for reception of ascending process of astragalus; fc, fibular crest; mma, medial malleolus; pamr, paramarginal ridge; pc, posterior hemicondyles; plp, posterolateral process; pmn, posteromedial notch; pmr, posteromedial ridge.
Figure 17 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 17. Left femur of holotype of Sarcosaurus woodi, NHMUK PV R4840. Photographs (A−D) and surface scan (E) in posterior (A), medial (B), anterior (C), lateral (D) and lateral and slightly anterior (E) views. Arrows point towards anterior direction. Abbreviations: aiml, anterior intermuscular line; atr, anterior trochanter; cfl, depression associated with the insertion of the M. caudofemoralis longus; dltr, dorsolateral trochanter; ft, fourth trochanter; trsh, trochanteric shelf.
Figure 13 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 13. Partial left pedal autopodium (A−K) and metatarsal of indeterminate side (L) of referred specimen of Sarcosaurus woodi, WARMS G672 (A−C), G673 (D−F), G677 (G, H), G687 (I−K) and G671 (L). Metatarsal II in anterior (A), lateral (B) and distal (C) views. Metatarsal III in proximal (D), anterior (E) and lateral (F) views. Metatarsal IV in anterior (G) and lateral (H) views. Phalanx II-1 in anterior (I), proximal (J) and lateral (K) views. Proximal end of metatarsal II or III in lateral/medial view (L). Arrows point towards anterior direction. Abbreviations: clf, collateral fossa.
Figure 14 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 14. Photomicrographs of a thin section of dorsal rib shaft of referred specimen of Sarcosaurus woodi, WARMS G676, under plain-polarized light (A, C) and polarized light with a gypsum plate (B, D). White rectangles in (A, B) indicate the magnified areas shown in (C, D). Arrowheads in (C, D) indicate annuli. Abbreviations: csb, compact spongy bone; flb, fibrolamellar bone; plb, pseudolamellar bone; trb, trabeculae.
Figure 2 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 2. Silhouette showing the preserved bones of referred specimen of Sarcosaurus woodi, WARMS G667–690. Skeletal reconstruction from Mark Witton.
Figure 9 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 9. Right femur of referred specimen of Sarcosaurus woodi, WARMS G682, in posterior (A), medial (B), anterior (C), lateral (D) and distal (E) views. Arrows point towards anterior direction. Abbreviations: af1, insertion of the M. adductor femoris 1; atr, anterior trochanter; cfl, depression associated with the insertion of the M. caudofemoralis longus; dltr, dorsolateral trochanter; fc, fibular condyle; ft, fourth trochanter; fte, attachment of the distal portion of the M. femorotibialis externus; gpl, insertion scar of the M. gastrocnemius pars lateralis/M. flexor hallucis longus; gr, groove; icc, intercondylar cleft; ife, insertion scar of the M. iliofemoralis externus; mdc, mediodistal crest; pf, popliteal fossa; tc, tibial condyle; tfc, tibiofibular crest.
Figure 16 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 16. Partial pelvic girdle of holotype of Sarcosaurus woodi, NHMUK PV R4840. Photographs (A−D) and surface scans (E, F) of left ilium and pubis (A, B) and right ilium and pubis (C−F) in lateral (A, C), medial (B, D), lateral and slightly posterior (E), and dorsal and slightly lateral (F) views. Arrows point towards anterior direction. Grey shaded regions are reconstructed. Abbreviations: brs, brevis shelf; brs-sac connection between brevis shelf and supraacetabular crest; isp, ischiadic peduncle; obt, obturator foramen; pipl, puboischiadic plate; pla, plaster; poap, postacetabular process; prap, preacetabular process; pub, pubis; pup, pubic peduncle; sac, supraacetabular crest.
Figure 15 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 15. Posterior dorsal vertebra of holotype of Sarcosaurus woodi, NHMUK PV R4840, in left lateral (A), right lateral (B), ventral (C), dorsal (D), anterior (E) and posterior (F) views. Arrows point towards anterior direction. Abbreviations: aaf, anterior articular facet; hyp, hypantrum; lfo, lateral fossa; prz, prezygapophysis; tp, transverse process.
Figure 5 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 5. Anterior or middle caudal vertebra of referred specimen of Sarcosaurus woodi, WARMS G679, in ventral (A), dorsal (B) and lateral (C, D) views. Abbreviations: f.na, interdigitated articular facet for neural arch; fos, fossa on lateral surface of centrum.
Figure 10 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 10. Left tibia of referred specimen of Sarcosaurus woodi, WARMS G668, in anterior (A), lateral (B), medial (C), posterior (D), proximal (E) and distal (F) views. Arrows point towards anterior direction. Abbreviations: cn, cnemial crest; fap, facet for reception of ascending process of astragalus; fc, fibular crest; pc, posterior hemicondyles; plc, posterolateral concavity; plp, posterolateral process; pmn, posteromedial notch; pmr, posteromedial ridge; str, striations.
Figure 7 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 7. Pelvic fragments of referred specimen of Sarcosaurus woodi, WARMS G690 (A–C), G688 (D–F) and G683/G684 (G–I). Partial pubic peduncle of left ilium in posterior (A) and lateral (B) views, and cross-section of peduncle (C). Partial left pubis in lateral (D), medial (E) and anterodorsal (F) views. Partial right pubis in lateral (G), medial (H) and anterodorsal (I) views. Arrows point towards anterior direction. Abbreviations: dp, longitudinal depression; pub.ap, pubic apron; sac, supraacetabular crest.
Figure 11 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 11. Right tibia of referred specimen of Sarcosaurus woodi, WARMS G680, in anterior (A), lateral (B), medial (C), posterior (D), proximal (E) and distal (F) views. Arrows point towards anterior direction. Abbreviations: cn, cnemial crest; fap, facet for reception of ascending process of astragalus; fc, fibular crest; gms, origin scar of the M. gastocnemius pars medialis; pc, posterior hemicondyles; plp, posterolateral process; pmn, posteromedial notch; pmr, posteromedial ridge; str, striations.
Figure 4 in A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian-Sinemurian) of central England
Figure 4. Middle or posterior dorsal vertebra of referred specimen of Sarcosaurus woodi, WARMS G678, in left lateral (A), right lateral (B), ventral (C) and anterior (D) views. Arrows point towards anterior direction. Abbreviations: acdl, anterior centrodiapophyseal lamina; fos, fossa on lateral surface of centrum; ncs, neurocentral suture; pcdl, posterior centrodiapophyseal lamina.
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