ID: com.universewallpapers.shark17
Version: 1.0
Size: 12 Mb
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Incredible Shark Photo Gallery - Wallpaper Unique Illustrations - Megalodon Art Images Free Download ! Sharks are a group of fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha and are the sister group to the rays. However, the term "shark" has also been used for extinct members of the subclass Elasmobranchii outside the Selachimorpha, such as Cladoselache and Xenacanthus, as well as other Chondrichthyes such as the holocephalid eugenedontidans. Under this broader definition, the earliest known sharks date back to more than 420 million years ago. Amazing Shark and Ocean Pictures HD Wallpapers - Digital Art High Definition ! Fun Facts : Evidence for the existence of sharks dates from the Ordovician period, 450–420 million years ago, before land vertebrates existed and before many plants had colonized the continents. Only scales have been recovered from the first sharks and not all paleontologists agree that these are from true sharks, suspecting that these scales are actually those of thelodont agnathans. The oldest generally accepted shark scales are from about 420 million years ago, in the Silurian period. Download also our other AWESOME WALLPAPERS for your android mobile phone. All Wallpapers in HD - the best PHOTOS of Ocean , Sea , Fierce , Predator , Fish in the WORLD! Ideal app for your Tablet and Smartphone! Best app for your smartphone and tablet. Tips, Reviews and Questions? Please send an email Thank you!Download Shark Wallpaper 1.0 APK
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