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Fossil tooth whorl of ancient shark.
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Fossil tooth spiral

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Fossils of teeth from Giant Megatooth Shark
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Megalodon Teeth

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A fossil of the ancient shark Falcatus falcatus
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The Ancient Shark Falcatus falcatus

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A rendering of an underwater marine scene from the Proterozoic Eon, featuring a creature that resembles a jellyfish and other organisms.
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Ediacaran Community, Proterozoic Eon (2,500 - 542 Million Years Ago)

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Two researchers, looking for fossil whales, scan a rock formation in Peru's Pisco Basin.
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Searching for Fossil Whales in Peru

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Globotruncana falsostuarti -- a foram that lived about 75 million years ago, during the Cretaceous Period.
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Globotruncana falsostuarti

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A researcher holds an arm bone from a "toothed" mysticete whale from Vancouver Island.
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Arm Bone Fossil of an Ancient Toothed Whale

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Paleobiologist Mark D. Uhen drills away rock to reveal the fossilized bones of Peruvian archaeocetes (ancient whales), in the Vertebrate Paleontology Department at the Museo de Historia Natural de San Marcos. Uhen is a professor at George Mason Univer
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Preparing a Fossil Whale Specimen

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Ancient sea cow vertebra found in the Gatun Formation in Central America, Panama
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Ancient Sea Cow Vertebra

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dugong feeds on seagrass in the Red Sea
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Dugong Feeding

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Gabor Szathmary secures one of the plaster jackets containing a fossil "toothed" mysticete that was excavated on Vancouver Island.
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Fossils Get a CT Scan

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A photo of an arid ocean cliff in Chile's Atacama Desert with the ocean below.
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Exploring Chile's Marine Fossil Record in the Atacama Desert

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