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1,301 results for “Early Cretaceous”
Fig. 15 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 15. Photograph and interpretive drawing of the carpus and manus of GMV-2158. Abbreviations: sm, semilunate carpal; unr, ulnare; x, carpal X; I1, proximal phalanx of alular digit. Other abbreviations as in figure 3.
Fig. 9 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 9. Photograph and interpretive drawing of the skull of GMV-2159. Abbreviations: mp, dorsal maxillary process. Other abbreviations as in figures 3 and 5.
Fig. 10 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 10. Detail of the cervical series of GMV-2158 (photo and interpretive drawing). Abbreviations: poz, postzygapophysis; prz, prezygapophysis.
Fig. 8 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 8. Photograph and interpretive drawing of the skull of GMV-2158. Abbreviations: ac, antorbital cavity; enr, external nares; lac, lacrimal; md, mandible; mx, maxilla; n, nasal; p, parietal; pal, palatine; po, postorbital; q, quadrate; saf, surangular fenestra. Other abbreviations as in figures 3 and 5.
Fig. 5 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 5. Photograph and interpretive drawing of the positive cast of GMV-2159. The study of GMV-2159 was based on a positive cast of epoxy resin, which renders greater anatomical details. This positive cast was molded from a positive cast of RTV (room temperature vulcanizing) silicon rubber made from the natural mold (fig. 4). Abbreviations: d, dentary; mad, major digit; pyg, pygostyle; scl, sclerotic; I–IV, pedal digits I– IV; (l) or (r), left or right element. Other abbreviations as in figure 3.
Fig. 3 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 3. Photograph and interpretive drawing of GMV-2158 after complete preparation. The two slabs shown in figure 2 were glued and then prepared from one side. Abbreviations: alm, alular metacarpal; co, coracoid; cmm, claw of major manual digit; cv, caudal vertebrae; cve, cervical vertebrae; f, frontal; fem, femur; fib, fibula; fur, furcula; gas, gastralia; hum, humerus; hyo, hyoid; isc, ischium; ili, ilium; j, jugal; loj, lower jaw; mam, major metacarpal; mim, minor metacarpal; mtI–IV, metatarsals I–IV; o, orbit; p, parietal; pmx, premaxilla; pub, pubis; r, ribs; rad, radius; sc, scapula; st, sternum; syn, synsacrum; tib, tibia; tv, thoracic vertebrae; uln, ulna; vr, ventral ribs; (l) or (r), left or right element.
Fig. 7 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 7. Photograph and interpretive drawing of GMV-2156. This slab, the counterpart of which is shown in figure 6, was used as the holotype of Lingyuangornis parvus by Ji and Ji (1999) (drawing after Ji and Ji, 1999). Abbreviations as in figures 3 and 5.
Fig. 2 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 2. Slab (A) and counterslab (B) of GMV-2158 prior to preparation. C. Details of the feather impressions preserved on the slab.
Fig. 1 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 1. Map of Liaoning Province (Northeastern China) showing the Early Cretaceous localities of GMV-2158 (Jianshangou) and NIGP-130723/GMV-2156 and GMV-2159 (Dawangzhangzi).
Fig. 18 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 18. Photograph and interpretive drawing of the tarsus of GMV-2158. Abbreviations: asp, ascending process of astragalus; ast, astragalus; cal, calcaneum; dts, distal tarsal. Other abbreviations as in figure 3.
Fig. 17 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 17. Photograph and interpretive drawing of the carpus and manus of GMV-2159. Abbreviations as in figure 15.
Fig. 12 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 12. Photograph and interpretive drawing of the caudal series and pelvis of GMV-2158. Abbreviations: vc1–8, caudal vertebrae 1–8; idp, ischiadic proximal dorsal process; ifa, iliac articular facet of ischium; pfa, pubic articular facet of ischium; ptr, posterior trochanter. Other abbreviations as in figure 3.
Fig. 4. Chubutemys copelloi, n in Chubutemys, a New Eucryptodiran Turtle from the Early Cretaceous of Argentina, and the Relationships of the Meiolaniidae
Fig. 4. Chubutemys copelloi, n. gen. et sp. MPEF-PV1236. Restored skull: left, dorsal; right, ventral.
Fig. 20 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 20. Comparisons of the carpus of a nonavian theropod (Deinonychus antirhopus), Archaeopteryx lithographica, GMV-2158, the enantiornithine Longipteryx chaoyangensis, and the embryo of a modern bird (Gallus gallus). Abbreviations as in figure 15.
Fig. 19 in Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
Fig. 19. Interpretive drawings of the pes of GMV-2158 and GMV-2159. Abbreviations as in figures 3 and 5.
Fig. 8 in Early Cretaceous Snakefly Larvae in Amber from Lebanon, Myanmar, and France (Raphidioptera)
Fig. 8. Dorsal (left) and ventral (right) reconstruction of specimen JG-13 in Lebanese amber. Ventral surface partly covered by dust and microscopic bubbles (indicated by stippled areas). Scale bar 5 0.25 mm.
Fig. 7 in Early Cretaceous Snakefly Larvae in Amber from Lebanon, Myanmar, and France (Raphidioptera)
Fig. 7. Photomicrograph of head capsule (dorsal view left, ventral view right) of specimen JG-13 in Lebanese amber. Scale bars 5 0.25 mm.
Fig. 3 in Early Cretaceous Snakefly Larvae in Amber from Lebanon, Myanmar, and France (Raphidioptera)
Fig. 3. Dorsal (top) and ventral (bottom) line illustrations of specimen MNHN-ARC-265.6 in French amber. Scale bar 5 0.25 mm.
Figs. 1–2 in Early Cretaceous Snakefly Larvae in Amber from Lebanon, Myanmar, and France (Raphidioptera)
Figs. 1–2. Photomicrographs of larval snakeflies in French amber. 1. Head capsule of specimen MNHN- ARC-265.6 in dorsal view. 2. Head capsule and prothorax of specimen MNHN-ARC-328.4. Scale bars 5 0.25 mm.
Fig. 6 in A Small Derived Theropod from Öösh, Early Cretaceous, Baykhangor Mongolia
Fig. 6. Systematic variation in maxillary fenestra morphology among coelurosaur theropods. Shanag ashile (IGM 100/1119), top, illustrating a dorsally displaced maxillary fenestra (character 237.1) and a maxillary fenestra recessed within a shallow caudal or caudodorsally open fossa (character 239.1). Dilong paradoxus (IVPP V14243), bottom, illustrating the absence of the above character states (character 237.0 and 239.0).
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