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Cretaceous


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A relative of Archaeoceratops which is adapted for climbing and feeding in trees. Archaeoceratopsidae.

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A giant primitive octopus, maybe 3 meters long. Palaeoctopodidae.

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A semi-aquatic, platypus-like Monotreme that inhabits waterways on the shore of the Eromanga seaway. Monotremata.

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A relative of Microraptor that is fully able to fly by flapping its wings. Microraptoria.

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Aquatic, water-plant eating relative of Nigersaurus. Rebbachisauridae.
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A primitive ceratopsian with quill-like protofeathers, affording it defences like a porcupine. Archaeoceratopsidae.
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A relative of Hyphalosaurus which reaches a length of 3 meters, similar in size to Champsosaurus. Hyphalosauridae.
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A relative of Caudipteryx that has very long display plumes on its tail. Caudipteridae.

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A kind of tree fern that propagates and reproduces by being torn down or knocked over. Cyatheales.
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A giant ammonite that has an array of ornamental spikes. Ancyloceratidae.
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A kalligrammatid lacewing that is adapted to come out at night, and hence has camouflage patterns, allowing to to rest by day. Kalligrammatidae.
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A primitive oviraptorosaur that is able to fly with large feathered wings. Stem Oviraptorosauria.

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A relative of Dsungaripterus which is adapted as an omnivore that feeds by turning over stones and leaf litter. Dsungaripteridae.

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A relative of Kaprosuchus, which has a sabre-toothed-cat-like arrangement of fangs. Mahajangasuchidae.

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An enantiornithine which is adapted to feed on flower nectar. Longipterygidae.
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An oviraptorosaur which is able to ferment plant matter in its enlarged crop, much like a hoatzin. Oviraptorosauria.
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Fully aquatic spinosaur, living in large rivers or estuaries, only returning to land in order to lay eggs. Spinosaurinae.
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An Oviraptorosaur that is adapted to feed mainly on small vertebrates. Oviraptoridae.

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An Appalachian tyrannosaur that has become an island dwarf. Dryptosauridae. 
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Burrow-digging ornithopod which has large clawed forelimbs for excavating its burrows. Parksosauridae.
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A relictual Ichthyosaur which is found in the late Cretaceous of Australia. Platypterygiinae.

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Ankylosaur with a tail club that is pointed on each side. Ankylosaurinae.
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A robust, feathered elasmarian that is adapted to the cold climates of Cretaceous Antarctica. Elasmaria.
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An abelisaur with a large, pointed cranial horn. Majungasauridae. 
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A species of slow-moving benthic ammonite that accrues algae and encrusting organisms on its shell as camouflage. Pachydiscidae novis.
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An omnivorous, boar-like Ceratopsian. Leptoceratopsidae.

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A relative of Centrosaurus that has paired, rhinoceros-like nasal horns. Centrosaurinae. 
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A chasmosaur that has large flared jugals, with horns, that. anchor exceedingly powerful jaw muscles. Chasmosaurinae. 
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A relative of Nasutoceratops that has developed a helmeted, musk-ox like set of horns. Nasutoceratopsini.
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A pachycephalosaur which has a tall, conical dome that is used solely for display, as opposed to physical combat. Pachycephalosauridae.
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A small pterosaur which is adapted to clamber amongst the branches of flowering trees, drinking nectar. Pterodactyloidea.
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A giant Cretaceous centipede that could have fed on baby dinosaurs. Scolopendridae.

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An abyssal-dwelling relative of Enchodus, having anglerfish-like bioluminescent lures. Enchodontidae.
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An abyssal-dwelling relative of Lepidotes, having somewhat reduced scalation. Semionotiformes.
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An abyssal-dwelling relative of Dercetis, having fewer, much larger teeth. Dercetidae.
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An abyssal-dwelling relative of Ancyloceras, feeding like a vampire-squid. Ancyloceratidae.
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A pachycephalosaur species with large spikes resembling those of Stygimoloch, which are still present when the animal is mature. Pachycephalosauridae.
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A durophagous relative of Protoceratops which feeds on wood, branches, nuts etc. Protoceratopsidae.

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A titanosaur which has an extensive covering of spiny osteoderms, affording it some protection from predators. Lithostrotia.
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A relictual xenacanthid shark occurring in Madagascar, having a ghost lineage since the Triassic. Xenacanthidae.

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A filter-feeding Mosasaur. Halisaurinae.

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An ankylosaur which is aquatic much like a hippopotamus, and accordingly has shorter legs and an even stouter body for buoyancy. Ankylosaurinae.
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A relative of Troodon that has become an obligate herbivore, even possessing a beak. Troodontidae.

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A gondwanathere that reches the size of a large wombat. Gondwanatheria. 
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A fossil sturgeon that has back plates resembling those of a stegosaur. Acipenseriformes.

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A dromaeosaur that is adapted for swimming in order to prey on fish. Unenlagiinae.
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A relictual stegosaur inhabiting India, that has evolved in isolation since India separated from Gondwana. Stegosauridae.
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A giant alvarezsaur, perhaps 4 meters long. Alvarezsauridae.
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A lambeosaur which possesses both a hollow crest and a large, Gryposaurus-like nose. Lambeosaurinae.
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A dinosaur intermediate between Einiosaurus and Achelousaurus. Pachyrhinosaurini.

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A filter-feeding aristonectid which reaches a greater size than any other plesiosaurian, perhaps 18m. Aristonectidae.
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​Tree-dwelling dromaeosaur, which is not a Microraptorian. Velociraptorinae.
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A Maastrichtian relative of Pteranodon which possesses a distinctive crest. Pteranodontidae.
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