poisson

In 2000 a virtually complete Scelidosaurus skeleton was discovered in England. This fossil's hundreds of armor plates and spikes are preserved in their life positions, providing extraordinary details about how this dinosaur looked. St. George is the only place anywhere in the Western Hemisphere that the 11-foot long Scelidosaurus replica has been on display. The St. George Dinosaur Discovery Site at Johnson Farm (St. George, Utah) is home to exceptionally well-preserved dinosaur tracks, some displaying skin impressions. These tracks, along with hundreds of fossil fish, plants, rare dinosaur remains, invertebrates traces and important sedimentary structures, show evidence that this site was produced along the western edge of a large, Early Jurassic (age between 195-198 million years ago) freshwater lake named Lake Dixie. Source: www.sgcity.org/dinotrax/

Fossil samples – e.g. ‘primitive’ bony fish (1, 2), a skull of a temnospondyl ‘amphibian’ (probably a metoposauroid) in dorsal view (3), a skull of an archosaur of the crocodile lineage (probably a phytosaur) in palatal view (4), holotype of the “gliding reptile” Icarosaurus siefkeri [1] (5) and Atreipus-Grallator-type dinosaur tracks (bottom right) – from the Newark Supergroup, i.e. a series of mainly Late Triassic to Early Jurassic sedimentary rocks of eastern North America ↑ Edwin H. Colbert: A gliding reptile from the Triassic of New Jersey. American Museum Novitates, 2230. American Museum of Natural History, New York 1966, digitallibrary.amnh.org, cf. fig. 3 therein.

Pliosaurus (Luskhan itilensis) lived on the territory of the Volga region in the Hauterivian age of the Early Cretaceous period. Discovered in 2002 by G.N. Uspensky on the banks of the Volga near the village of Slantsevy Rudnik. This is the most complete pliosaurus skeleton found in Russia. This pliosaurus was not a predator and preferred to feed on fish and cephalopods.

Elasmobranchs teeth from the Thanetian phosphatic serie of Jebel Dyr (Algerian-Tunisian border area); 14. Nebrius bequaerti; 15. Archaeomanta priemi; 16. Burnhamia daviesi; 17. Ginglymostoma subafricanum; 18. Myliobatis sulcidens; 21. Hemiscyllium daimeriesi; 23. Squatiscyllium nigeriensis. a: labial; b: lingual; c: lateral; d: occlusal; e: oral; f: basilar views.

Elasmobranchs teeth from the Thanetian phosphatic serie of Jebel Dyr (Algerian-Tunisian border area); 7. Brachycarcharias lerichei; 8. Anomotodon novus; 9. Mustelus biddlei 10. Brachycarcharias lerichei; 11. Mennerotodus sp; 12. Abdounia beaugei; 13. Galeorhinus mesetaensis. a: labial; b: lingual; c: lateral views.

Elasmobranchs teeth from the Thanetian phosphatic serie of Jebel Dyr (Algerian-Tunisian border area); 1. Abdounia beaugei; 2. Palaoegaleus vincenti; 3. Galeorhinus mesetaensis; 4. Delpitoscyllium africanum; 5. Squatina prima; 6. Brachycarcharias lerichei. a: labial; b: lingual; c: lateral; d: occlusal views.

Elasmobranchs teeth and vertebrae from the Thanetian phosphatic serie of Jebel Dyr (Algerian-Tunisian border area); 23. Raja sp.; 24. Heterodontus sp.; 25. Dasyatis hexagonalis; 26. Abdounia beaugei; 27. Physogaleus secundus; 28. Carcharias hopei; 29-30. Cretalamna appendiculata; 31. Brachycarcharias lerichei; 32. Isurolamna affinis; 33-36. Sectioned fossil vertebral centrum of sharks. a: labial; b: lingual; c: lateral; d: occlusal; e: oral views.

Reprodução a partir da gravura original do Holótipo, Hybodus acutus Agassiz, 1837, na publicação e prancha: L. Agassiz. 1837. Recherches sur les poissons fossiles Vol.3 (Atlas); Tab 10