Dino era

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Across
  1. 3. Extinct marine reptiles with long necks from the Triassic.
  2. 5. Hardened remains of ancient plants and animals. (6 letters)
Down
  1. 1. A term for the study of ancient life through fossils.
  2. 2. The period that followed the Triassic period.
  3. 4. Dinosaurs closest living relatives.