1. Week 5 Fish origins – Fossil fishes Jawless and cartilagenous fishes

2. Chapter 2 - Fish Origins and Some Early History

3. Phylum Hemichordata Phylum Echinodermata Phylum Chordata - Origins

4. Pikaia – a very early (fossil) chordate

5. A primitive LIVING Chordate Phylum Chordata Cephalochordate or amphioxus

6. A primitive LIVING Chordate Phylum Chordata Cephalochordate or amphioxus

7. Major Groups of Fishes

8. “Fishes”

9. Phylogeny of the Vertebrates “Jawless fishes” “Jawed fishes”

10. Jawless Jawed

11. “Jawless fishes” “Bony fishes” Cartilagenous fishes Phylogeny of the Vertebrates

12. Jawless Bony Cartilaginous

13. Fishes

14. Trends in Fish Evolution Increased dietary niche

15. Trends in Fish Evolution Increased mobility

16. Chapter 5 – Jawless Fishes

17. ca. 500 mya Primitive Vertebrates Conodonts

19. Class Myxini Hagfishes

21. Slime glands and slime

22. Hagfish Eggs

23. Mxyine glutinosa L. 1 Family 6 genera ca. 40 species

24. Eptatretus

25. Eel Skin

26. Class Cephalaspidomorphi Lampreys

27. Geotria 2 familes 6 genera 41 species Lampreys

28. Lampetra tridentata

29. Lampetra similis Lampetra ayresi Lampetra richardsoni

30. Predaceous or parasitic life mode

31. Predaceous lampreys

32. Brook lampreys

33. Satellite Species Predaceous Lampetra fluviatilis Non-feeding Lampetra planeri

34. Great Lakes and sea lampreys

36. Fossil Jawless Fishes “Ostracoderms”

37. Fossil Jawless Fishes “Ostracoderms” All Long Extinct

38. Sacabambaspis Aranapsida

39. Pteraspidomorphi Pteraspis

40. Anaspidiformes Rhyncholepis

41. Osteostraci Ateleaspis

42. Chapter 6 - Fishes with Jaws Gnathostomes

43. Thelodonti

44. Jaw Evolution

45. First jaws

47. †Class Placodermi

48. All Long Extinct

49. †Class Placodermi Rhenaniformes

50. †Class Placodermi Antiarchiformes

51. †Class Placodermi

52. Jaws + well developed paired fins and girdles

53. Cartilagenous Fishes

54. Hydrolagus Cartilagenous Fishes Ratfish, chimaeras

55. Callorhinchus Cartilagenous Fishes Ratfish, chimaeras

56. Rhinochimaera Cartilagenous Fishes Ratfish, chimaeras

57. Sharks, skates and rays Cartilagenous Fishes Elasmobranchs

58. Skates and rays and sawfishes

59. Narcine (electric ray) Skates and rays and sawfishes

63. Heterodontus (Port Jackson Shark) Sharks

67. Primitive Sharks

68. Cookie cutter shark Primitive Sharks

69. Buoyancy

70. Respiration

71. Feeding

72. Spiral Valve

73. Plankton Feeding

74. Sensory Biology ampullae de lorenzini

75. Reproduction