Exploring Arthropods, Echinoderms, and Chordates Diversity

1. II. Animal Diversity b. Ecdysozoans 3. Arthropod Phyla e. Phylum Hexapoda 1. Diversity - Collembola

2. II. Animal Diversity b. Ecdysozoans 3. Arthropod Phyla e. Phylum Hexapoda 1. Diversity - Collembola - Protura

3. II. Animal Diversity b. Ecdysozoans 3. Arthropod Phyla e. Phylum Hexapoda 1. Diversity - Collembola - Protura - Insecta

4. II. Animal Diversity b. Ecdysozoans 3. Arthropod Phyla e. Phylum Hexapoda 2. Biology - spiracles

5. II. Animal Diversity b. Ecdysozoans 3. Arthropod Phyla e. Phylum Hexapoda 2. Biology - spiracles - Fusion of segments into three regions: head, thorax, abdomen

6. II. Animal Diversity b. Ecdysozoans 3. Arthropod Phyla e. Phylum Hexapoda 2. Biology - spiracles - Fusion of segments into three regions: head, thorax, abdomen - Flight in insects

7. II. Animal Diversity C. Bilateria 1. Protostomes – blastopore forms mouth a. Lophotrochozoans b. Ecdysozoans 2. Deuterostomes – blastopore forms anus a. Echinodermata b. Hemichordata c. Chordata

9. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus a. Echinodermata 1. Diversity - sea stars

10. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus a. Echinodermata 1. Diversity - sea stars - sea cucumbers

11. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus a. Echinodermata 1. Diversity - sea stars - sea cucumbers - sea urchins

12. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus a. Echinodermata 2. Biology - “biradial symmetry”

13. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus a. Echinodermata 2. Biology - “biradial symmetry” - internal skeleton – calcified plates

14. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus a. Echinodermata 2. Biology - “biradial symmetry” - internal skeleton – calcified plates - water vascular system and tube feet (sieve plate, ring canal, radial canal)

15. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus a. Echinodermata 2. Biology - “biradial symmetry” - internal skeleton – calcified plates - water vascular system and tube feet (sieve plate, ring canal, radial canal) - filter feeders (Sea Lily), herbivores (sea urchins), predators (sea stars).

16. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus b. Hemichordata – Acorn Worms

17. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus b. Hemichordata – Acorn Worms - pharyngeal gill slits - hollow dorsal nerve tube

18. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters

19. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters - Pharyngeal Gill Slits

20. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters - Pharyngeal Gill Slits - Hollow Dorsal Nerve Tube

21. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters - Pharyngeal Gill Slits - Hollow Dorsal Nerve Tube - Post-anal tail

22. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters - Pharyngeal Gill Slits - Hollow Dorsal Nerve Tube - Post-anal tail - notochord – a rigid supporting rod

23. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters 1. Urochordata - Tunicates

24. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters 1. Urochordata – Tunicates - 4 traits as larva

25. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters 1. Urochordata – Tunicates - 4 traits as larva - mobile as larva

26. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters 1. Urochordata – Tunicates - 4 traits as larva - mobile as larva - become sedentary as adults (filter)

27. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters 2. Cephalochordata – Lancelets

28. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: Four Key Characters 2. Cephalochordata – Lancelets - 4 traits - burrowers - filter feeders

29. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: 3. Vertebrata

30. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: 3. Vertebrata - four traits

31. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: 3. Vertebrata - four traits - vertebral column

32. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: 3. Vertebrata - four traits - vertebral column - trends:

33. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: 3. Vertebrata - four traits - vertebral column - trends: - increased locomotion

34. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: 3. Vertebrata - four traits - vertebral column - trends: - increased locomotion - increased cephalization

35. II. Animal Diversity C. Bilateria 2. Deuterostomes – blastopore forms anus c. Chordata: 3. Vertebrata - four traits - vertebral column - trends: - increased locomotion - increased cephalization - adaptations to land

36. II. Animal Diversity 3. Vertebrata a. Origin of Vertebrates - filter feeding ancestor (lancelet-like) - 550 mya - Pikaea

37. II. Animal Diversity 3. Vertebrata a. Origin of Vertebrates

38. II. Animal Diversity 3. Vertebrata b. Jawless Fishes – (Class: Agnatha) - Early: Ostracoderms – filter feeding

39. II. Animal Diversity 3. Vertebrata b. Jawless Fishes – (Class: Agnatha) - Current: lampreys, hagfishes: parasitic