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Home > Art, Film & Photography > Ichthyosauria: Besanosaurus, Shonisaurus, Platypterygius, Ophthalmosaurus, Cymbospondylus, Excalibosaurus, Mixosaurus
Ichthyosauria: Besanosaurus, Shonisaurus, Platypterygius, Ophthalmosaurus, Cymbospondylus, Excalibosaurus, Mixosaurus

Ichthyosauria: Besanosaurus, Shonisaurus, Platypterygius, Ophthalmosaurus, Cymbospondylus, Excalibosaurus, Mixosaurus


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About the Book

Aus Wikipedia. Nicht dargestellt. Auszug: Ichthyosaurs (Greek for "fish lizard" - /ichthys meaning "fish" and /sauros meaning "lizard") were giant marine reptiles that resembled fish and dolphins. Ichthyosaurs thrived during much of the Mesozoic era; based on fossil evidence, they first appeared approximately 245 million years ago (mya) and disappeared about 90 million years ago, about 25 million years before the dinosaurs became extinct. During the middle Triassic Period, ichthyosaurs evolved from as-yet unidentified land reptiles that moved back into the water, like the mosasaurs in a development parallel to that of the ancestors of modern-day dolphins and whales. They were particularly abundant in the Jurassic Period, until they were replaced as the top aquatic predators by plesiosaurs in the Cretaceous Period. They belong to the order known as Ichthyosauria or Ichthyopterygia ('fish flippers' - a designation introduced by Sir Richard Owen in 1840, although the term is now used more for the parent clade of the Ichthyosauria). Platypterygius kiprijanovi - Albian-Cenomanian of Kursk region (Russia)Ichthyosaurs averaged 2-4 metres (6.6-13 ft) in length (although a few were smaller, and some species grew much larger), with a porpoise-like head and a long, toothed snout. Built for speed, like modern tuna, some ichthyosaurs appear also to have been deep divers, like some modern whales (Motani, 2000). It has been estimated that ichthyosaurs could swim at speeds up to 40 kilometres per hour (25 mph). Similar to modern cetaceans such as whales and dolphins, they were air-breathing. According to weight estimates by Ryosuke Motani a 2.4 meters (8 ft) Stenopterygius weighed around 163-68 kilograms (360-150 lb) whilst a 4 meters (13 ft) Ophthalmosaurus icenicus weighed 930-950 kilograms (1.03-1.05 short tons). Although ichthyosaurs looked like fish, they were not. Biologist Stephen Jay Gould said the ichthyosaur was his favor...http: //booksllc.net/?l=de


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Product Details
  • ISBN-13: 9781159062934
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • No of Pages: 44
  • Spine Width: 3 mm
  • Weight: 77 gr
  • ISBN-10: 1159062935
  • Publisher Date: 22 Jul 2010
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Sub Title: Besanosaurus, Shonisaurus, Platypterygius, Ophthalmosaurus, Cymbospondylus, Excalibosaurus, Mixosaurus
  • Width: 229 mm


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