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430 results for “Upper Jurassic”
Fig. 3. A in A new monofenestratan pterosaur from the Kimmeridge Clay Formation (Kimmeridgian, Upper Jurassic) of Dorset, England
Fig. 3. A monofenestratan pterosaur Cuspicephalus scarfi gen. et sp. nov. from the Upper Jurassic, Kimmeridge Bay, Dorset; MJML K1918. A. Posterior of skull showing near complete orbit. B. Distal tip of rostrum showing anteriorly directed alveolus 1. C. Rostrum anterior of nasoantorbital fenestra. D. Sagittal crest. Scale bars 10 mm.
Fig. 4. A in A new monofenestratan pterosaur from the Kimmeridge Clay Formation (Kimmeridgian, Upper Jurassic) of Dorset, England
Fig. 4. A monofenestratan pterosaur Cuspicephalus scarfi gen et sp. nov. from the Upper Jurassic, Kimmeridge Bay, Dorset; MJML K1918. A. Left exoccipital and occipital condyle. Scale bar 10 mm. B. Outline of right jugal showing triangular shape of anteroventral border of orbit.
Fig. 1. A in First record of the fossil dragonfly family Eumorbaeschnidae from the Upper Jurassic of Poland
Fig. 1. A. Middle Volgian (= Upper Tithonian) palaeofacial map of Poland (after Gaździcka, 1998, slightly modified). B. Road map of Tomaszów Mazowiecki area showing location of Owadów−Brzezinki quarry. B. Stratigraphical position of the sedimentary sequence cropped out in the quarry at Owadów−Brzezinki showing the successive sedimentary units I–III of the Middle Volgian (= Upper Tithonian) strata. Z. reg., Zaraiskites regularis.
Fig. 2 in First record of the fossil dragonfly family Eumorbaeschnidae from the Upper Jurassic of Poland
Fig. 2. Dragonfly Eumorbaeschna adriankini sp. nov., holotype ZPAL J1/O−B1; Upper Tithonian, Owadów−Brzezinki quarry, Poland. Forewing in ventral view (A) and explanatory drawing (B). Abbreviations: CuA, cubitus anterior; IR, interrradius; MA, media anterior; MP, media posterior; Mspl, median supplement; RA, radius anterior; RP, radius posterior; Rspl, radial supplement; ScP, subcosta posterior.
Fig. 2 in A new tritylodontid from the Upper Jurassic of Xinjiang, China
Fig. 2. Tritylodontid cynodont Yuanotherium minor gen. et sp. nov. from the upper part of the Shishugou Formation (Oxfordian, Late Jurassic), Junggar Basin, northwestern Xinjiang, China. IVPP V15335 (holotype), showing details of PC1–3 in occlusolingual (A), occlusobuccal (B), occlusodistal (C), and occlusomesial (D) views.
Fig. 1 in A new tritylodontid from the Upper Jurassic of Xinjiang, China
Fig. 1. Tritylodontid cynodont Yuanotherium minor gen. et sp. nov. from the upper part of the Shishugou Formation (Oxfordian, Late Jurassic), Junggar Basin, northwestern Xinjiang, China. IVPP V15335 (holotype), fragment of upper jaw and three anterior postcanines in occlusal view. Stereo pair (A) and explanatory drawing (B). 1–3, the first, second and third left upper postcanines.
Fig. 3 in A new tritylodontid from the Upper Jurassic of Xinjiang, China
Fig. 3. Size distribution of upper postcanines in tritylodontids. Line indicates where length and width are equal. Unless indicated, all teeth are second upper postcanines. Data source: 1, Bienotherium yunnanense: Young (1947); Chow (1962); 2, Bienotherium magnum: Chow (1962); 3, Bienotherium minor: Young (1947); Chow (1962); 4, Bienotherium elegans: Young (1947); 5, Bienotheroides wansienensis: Sun (1984); 6, Bienotheroides zigongensis: PC3 measured from Sun (1986); 7, Bienotheroides shartegensis: Watabe et al. (2007); 8, Bienotheroides ultimus: isolated tooth, Maisch et al. (2004); 9, Bocatherium mexicanum: Clark and Hopson (1985); 10, Dianzhongia longirostrata: Cui (1981); 11, Dinnebitodon amarali: Sues (1986c); 12, Kayentatherium wellesi: MCZ8811, Sues (1986a); 13, Lufengia delicata: PC3, Chow and Hu (1959); 14, Oligokyphus major: R7030, Kühne (1956); 15, Oligokyphus minor: R7025, Kühne (1956); 16, Polistodon chuannanensis: He and Cai (1984); 17, Stereognathus ooliticus: a middle tooth, Simpsom (1928); Savage (1971); 18, Tritylodon longaevus: Butler (1939); 19, Xenocretasuchus sibiricus: isolated upper tooth, Tatarinov and Matchenko (1999); 20, Yuanotherium minor gen. et sp. nov.: this study (holotype, IVPP V15335); 21, Yunnanodon brevirostre: Cui (1976); 22, Unnamed Japanese specimen (a right upper tooth): measured from Setoguchi et al. (1999: fig. 1−1).
Fig. 9 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 9. Scatter plot of resilifer number over ligament length in Isognomon. The two groups that correspond to lithostratigraphy are clearly visible. Numbers in squared brackets refer to Fig. 2.
Fig. 8 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 8. Box plots of size for the three target taxa. A. Size of Arcomytilus based on log transformed geometric means of length and height. B. Size of Isognomon based on log transformed ligament length. C. Size of Eomiodon based on log transformed shell length. Arrangement of boxes corresponding more or less to their stratigraphic succession, from left to right. Numbers in squared brackets refer to Fig. 2.
Fig. 12 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 12. PCA plot of shell shape in Arcomytilus, grouped according to rib number in steps of 25 ribs and displayed as convex hulls.
Fig. 7 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 7. Scatter plots of log transformed values of height over length for the three target taxa. A. Arcomytilus. B. Isognomon. C. Eomiodon. Numbers in squared brackets refer to Fig. 2.
Fig. 6 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 6. Measured distances in the three target taxa. A. Arcomytilus. B. Isognomon. C. Eomiodon. Abbreviations: H, height; L, length; LL, ligament length. Arrow indicates turning point of growth.
Fig. 5 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 5. Specimens of neomiodontid bivalve Eomiodon securiformis (Sharpe, 1850) from the Upper Jurassic of Portugal. A–C. Sobral member, Late Kimmeridgian, E Arranhó. A. Hinge plates of left and right valve. GML 25915. B. Interior of right valve, showing hinge arrangement and parts of the muscle scars. GML 25916. C. Left valve view of articulated specimen. GML 25917. D. Articulated, strongly elongated, gerontic specimen. Sobral member, Late Kimmeridgian, Santa Cruz. GML 25918. E. Small articulated specimen with clearly visible commarginal lamellae. Alcobaça formation, Early Kimmeridgian, Vestiaria. GML 25919. F. Articulated gerontic specimen with ventrally elongated shell. Alcobaça formation, Early Kimmeridgian, Salgados. GML 25920. G. Short, rounded, articulated specimen. Sobral member, Late Kimmeridgian, E Arranhó. GML 25921. H. Large, high, and short specimen. Sobral member, Late Kimmeridgian, Porto das Barcas. GML 25922.
Fig. 3 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 3. Specimens of mytilid bivalve Arcomytilus from the Middle and Upper Jurassic of Portugal and France. A–F. Arcomytilus morrisii (Sharpe, 1850). A. Large articulated specimen with pointed umbones and slightly imprinted anterior part. Arranhó II member, earliest Tithonian, Serra de Alrota. GML 25900. B. Small adult specimen, left valve with fine ribbing pattern and relatively straight anterior margin. Alcobaça formation, Late Kimmeridgian, Consolação. GML 25901. C. Young adult specimen, left valve with coarse ribbing pattern and large, elevated disc. Arranhó II member, Early Tithonian, Santa Cruz. GML 25902. D. Small adult, articulated specimen. Alcobaça formation, Early Kimmeridgian, Salir do Porto. GML 25903. E. Large articulated specimen with extremely triangular outline and wide−spaced, strong ribs. Arranhó II member, Early Tithonian, Lameiro das Antas. GML 25904. F. Adult specimen, left valve with bi− and trifurcation and simultaneous insertion of ribs. Arranhó II member, Early Tithonian, Santa Cruz. GML 25905. G. Arcomytilus asper. Right valve. Late Bathonian, Luc−sur−Mer, Calvados, France. MNHN J 08224. H. Arcomytilus bathonicus. Right valve. Late Bathonian, Luc−sur−Mer, Calvados, France. MNHN, coll. Deshayes 1876−8. I. Arcomytilus pectinatus. Right valve. "Corallien", La Rochelle, Charente−Maritime, France. MNHN, coll. d'Orbigny 4247.
Fig. 11 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 11. Lithostratigraphy plot of Arcomytilus. A. Different species and lithostratigraphically grouped Arcomytilus morrisii are displayed as convex hulls. Calculated artificial shell outlines for full number coordinate pairs are plotted to illustrate the morphospace. M; mean artificial shell outline. B. 95% confidence ellipses of group means and corresponding calculated shell outlines for group means are plotted. Numbers in squared brackets refer to Fig. 2.
Fig. 2 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 2. Lithostratigraphy of the Upper Jurassic rock suite in the Lusitanian Basin. Modified from Schneider et al. (2009). All units discussed herein are numbered in squared brackets. Formations and members that are not yet formally established are written in lower case letters. Abbreviations: A., Arisphinctes; As., Aspidoceras; Au., Aulacostephanus; C., Crussoliceras; D., Dichotomoceras; Fm., formation; M., Micracanthoceras; Mb., member; Q., Quenstedtoceras; S., Simoceras; Se., Semiformiceras.
Fig. 1 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 1. Geographic and geological overview of the Lusitanian Basin. The numbering of localities refers to Table 1, second column.
Fig. 14 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 14. Lithostratigraphy plot of Eomiodon securiformis. A. Lithostratigraphically arranged groups are displayed as convex hulls. Calculated artificial shell outlines for full number coordinate pairs are plotted to illustrate the morphospace. M, mean artificial shell outline. B. 95% confidence ellipses of group means and corresponding calculated shell outlines for group means are plotted. Numbers in squared brackets refer to Fig. 2.
Fig. 16 in Ecophenotypic plasticity versus evolutionary trends-morphological variability in Upper Jurassic bivalve shells from Portugal
Fig. 16. Left valve of neomiodontid bivalve Eomiodon sp. from Early Tithonian, Arranhó II member, Santa Cruz (GML 25929) in internal (A) and external (B) views.
Fig. 1. A in Crustacean microcoprolites from the Upper Jurassic- Lower Cretaceous of the Neuquén Basin, Argentina: Systematics and biostratigraphic implications
Fig. 1. A. Location map of the Neuquén Basin with study localities and a stratigraphic chart of the Mendoza Group. 1, Tres Esquinas; 2, Loncoche creek; 3–4, Bardas Blancas; 5, Rahue creek; 6, Yeso creek; 7, Cara Cura range. B. Microcoprolites distribution in the Vaca Muerta Formation. Ammonite Zonation according to Aguirre−Urreta et al. (2008) and Riccardi (2008).
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