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gptkbp:instance_of
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gptkb:genus
gptkb:dinosaurs
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gptkbp:adaptations
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adapted for aquatic life
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gptkbp:body_shape
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streamlined
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gptkbp:coloration
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dark blue or gray
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gptkbp:cultural_significance
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featured in documentaries
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gptkbp:discovered_by
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gptkb:Europe
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gptkbp:era
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Mesozoic era
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gptkbp:extinction_cause
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environmental changes
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gptkbp:first_described_by
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gptkb:Richard_Owen
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gptkbp:fossil_record
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gptkb:England
gptkb:Germany
gptkb:Norway
marine fossils
well-documented
approximately 150 million years
found in various museums
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gptkbp:geological_formation
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gptkb:Oxford_Clay_Formation
gptkb:Kimmeridge_Clay_Formation
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gptkbp:habitat
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marine environment
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gptkbp:has_adaptation
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excellent vision
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gptkbp:has_diet
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gptkb:carnivore
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gptkbp:has_eye_size
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large
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gptkbp:has_flipper_count
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four
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gptkbp:has_limb_structure
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modified limbs
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gptkbp:has_natural_feature
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large eyes
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gptkbp:has_related_taxa
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gptkb:dinosaurs
gptkb:Dinosauria
gptkb:Thalattosauria
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gptkbp:has_swimming_ability
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fast swimmer
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gptkbp:head
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powerful jaws
elongated snout
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https://www.w3.org/2000/01/rdf-schema#label
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Opthalmosaurus
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gptkbp:is_known_to
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gptkb:fossils
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gptkbp:is_related_to
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other ichthyosaurs
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gptkbp:length
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up to 4.5 meters
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gptkbp:lived_during
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Jurassic period
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gptkbp:mouth
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conical teeth
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gptkbp:movement
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gptkb:swimming
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gptkbp:notable_species
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gptkb:Opthalmosaurus_icenicus
gptkb:Opthalmosaurus_natans
gptkb:Opthalmosaurus_sp.
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gptkbp:originated_in
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evolved from terrestrial ancestors
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gptkbp:paleobiology
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top predator in its ecosystem
studied for locomotion and feeding
important for understanding ichthyosaur evolution
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gptkbp:predators
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large marine reptiles
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gptkbp:reproduction
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ovoviviparous
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gptkbp:research_interest
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paleontologists
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gptkbp:social_behavior
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likely social
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gptkbp:tail_type
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horizontal tail fin
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gptkbp:bfsParent
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gptkb:dinosaurs
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gptkbp:bfsLayer
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4
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