Across
- 5. What are phylum arthopoda's characteristics?
- 8. trilobites and crustaceans(crabs and lobsters...).
- 9. mollusks:snails, slugs, clams, squid, and octopuses.
- 11. phylum Porifera
- 13. the Mesozoic era is the age of ________?
- 15. sea stars, sea urchins, and sea cucumbers.
- 16. What time period had the first normal shelled organism?
- 18. what are phylum Chordata's characteristics?
- 21. What are phylum Cnidaria's characteristics?
- 22. What phylum has these characteristics: toothed tongue-like radula to help chew plants, fleshy foot for movement, gill, mantle, and 1+ shells.
- 23. 66 million years ago-today?
Down
- 1. The cenozoic era is the age of________?
- 2. 4.6 billion years to 541 million years ago?
- 3. What are phylum Echinodermata's characteristics?
- 4. what is the oldest known shark species that is still alive today?
- 6. jellyfish, sea anemones, and corals
- 7. reef what shark species grabs their mates pectoral fin to mate with a female?
- 10. 272 million-541 million years ago?
- 12. what is the most advanced shark species?
- 14. what shark species uses its wide head to search for fish on the ground.
- 15. What phylum has these characteristics: filter feeders, water drawn into pores by flagellated cells, and filter bacteria and other edible particles out of water.
- 17. 66 million years to 272 million years ago?
- 19. mammals, fish, amphibians, reptiles, and birds.
- 20. what shark species uses its camoflague and speed to catch food?