Crustaceans

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Across
  1. 2. how many species of crustation are there?
  2. 4. Japanese _______ crabs are the largest crustation in the world.
  3. 6. Crustaceans have a _____ circulatory system
  4. 11. obviously scorpions are not _______.
  5. 12. hold on what's this about again?
  6. 13. ostracods were the first crustation ______
  7. 15. what crustation does not have any known fossils?
Down
  1. 1. how old are crustation fossils
  2. 3. main crustation character from SpongeBob.
  3. 5. Crustacean appendages are ______
  4. 7. many Crustaceans like Cyclida are ______
  5. 8. Camborygma are fossils of _____
  6. 9. another crustation character from SpongeBob, Larry the ______
  7. 10. Crustations have a pair of _______ on their head
  8. 14. Ophiomorpha fossils are fossils of the species ghost _____