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  • Fish Menu - Natural History Notebooks
    Common Mola N Northern Pike S Sea Lamprey Sharks Blue Shark Greenland Shark Sharks Whale Shark Shortnose Sturgeon L Lobe Finned Fishes Looking for photos The Canadian Museum of Nature has thousands of unique images reflecting the diversity of the natural world including the photos and illustrations here in our Natural History Notebooks Contact us to learn more New Common mola Atlantic cod and Atlantic hagfish Added as part of

    Original URL path: http://nature.ca/notebooks/english/fishpg.htm (2016-02-07)
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  • Reptiles Menu - Natural History Notebooks
    Lizard S Snakes Boa Constrictor Common Garter Snake Gray Ratsnake Green Anaconda Massasauga Rattlesnake Racer Royal Python T Turtles Common Green Turtle Common Snapping Turtle Eastern Spiny Softshell Turtle Kemp s Ridley Leatherback Turtle Loggerhead Turtle F Flying Reptiles H Hylonomus The Earliest Reptile Looking for photos The Canadian Museum of Nature has thousands of unique images reflecting the diversity of the natural world including the photos and illustrations here

    Original URL path: http://nature.ca/notebooks/english/reppg.htm (2016-02-07)
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  • Navigate the World Menu - Natural History Notebooks
    Australia Europe Greenland North America Oceania South America Arctic Ocean Atlantic Ocean Indian Ocean Pacific Ocean Southern Ocean Reproduction Rights Credits Explore Nature Comments or Questions Last update nature ca

    Original URL path: http://nature.ca/notebooks/english/worldmap.htm (2016-02-07)
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  • Amphibians Menu - Natural History Notebooks
    Yellow spotted Salamander Looking for photos The Canadian Museum of Nature has thousands of unique images reflecting the diversity of the natural world including the photos and illustrations here in our Natural History Notebooks Contact us to learn more Reproduction

    Original URL path: http://nature.ca/notebooks/english/amphpg.htm (2016-02-07)
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  • Invertebrates Menu - Natural History Notebooks
    S Sea Worms A Ancient Coral Reefs Looking for photos The Canadian Museum of Nature has thousands of unique images reflecting the diversity of the natural world including the photos and illustrations here in our Natural History Notebooks Contact us

    Original URL path: http://nature.ca/notebooks/english/invertpg.htm (2016-02-07)
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  • Dinosaurs Menu - Natural History Notebooks
    Trackways Dromiceiomimus E Euoplocephalus tutus H Heterodontosaurus tucki Hypacrosaurus K Kentrosaurus aethiopicus M Mamenchisaurus O Opisthocoelicaudia skarzynskii Ouranosaurus nigeriensis P Panoplosaurus mirus S Stegoceras Styracosaurus albertensis T Therizinosaurus cheloniformis Troodon formosus Tyrannosaurus rex Looking for photos The Canadian Museum of Nature has thousands of unique images reflecting the diversity of the natural world including the photos and illustrations here in our Natural History Notebooks Contact us to learn more Reproduction

    Original URL path: http://nature.ca/notebooks/english/dinopg.htm (2016-02-07)
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  • Prehistoric Animals Menu - Natural History Notebooks
    America G Giant Beaver H Horses Hyracotherium Yukon Horse I Indricotherium J Jefferson s Ground Sloth L Lions Lions Prehistoric M Mammoths Columbian Mammoth of Babine Lake Woolly Mammoth Muskox Helmeted Muskox Muskox Prehistoric R Ringed Seal S Saiga Squirrels Arctic Ground Squirrel F Flying Reptiles H Hylonomus The Earliest Reptile A Archaeopteryx lithographica B Brachiosaurus D Dinosaur Eggs Dinosaur Extinction Dinosaur Metabolism Dinosaur Trackways Dromiceiomimus E Euoplocephalus tutus H

    Original URL path: http://nature.ca/notebooks/english/prehispg.htm (2016-02-07)
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  • Dinosaur Eggs: Natural History Notebooks
    that the mother dinosaurs had just laid eggs when they were buried they were not stealing them Dinosaurs laid eggs in either of two ways The characteristics of one way are still found in modern reptiles The other way resembles that of birds The most primitive form of egg laying is still found in modern reptiles The dinosaurs that laid eggs this way are the ornithischian or bird hipped dinosaurs These dinosaurs existed until the great extinction In fossils of eggs laid by ornithischian dinosaurs the eggs are usually round there are usually 20 to 30 in the nest and they are all jumbled together Palaeontologists think that the eggs in this kind of clutch were laid in one session as living turtles and crocodiles do The other form of egg laying evolved later in certain groups of saurischian or lizard hipped dinosaurs such as oviraptorosaurs These dinosaurs also existed until the great extinction Palaeontologists think that they represent an evolutionary transition between reptiles and birds The many similarities in their egg laying support this theory Oviraptorosaurs laid oblong eggs that were slightly ovoid one end is slightly narrower than the other In this group of dinosaurs there can be 30 to 40 eggs in the nest and they are arranged in pairs in a radial pattern like spokes In 2005 a fossil of an oviraptorosaur dinosaur with a pair of unlaid eggs was found The evidence suggests that the eggs were laid a pair at a time with an interval of at least a day between pairs A clutch could therefore take days or weeks to be completed There are several points of resemblance to birds birds lay markedly ovoid eggs and there is an interval of at least a day between them until the clutch is completed There

    Original URL path: http://nature.ca/notebooks/english/dinoeggs.htm (2016-02-07)
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