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BSC 2010L DEUTEROSTOMES

BSC 2010L DEUTEROSTOMES. Principal Biological Concepts:. A. Protostome vs. deuterostome (revisited). B. Chordate features. C. Chordate subphyla. D. Evolution of vertebrates from early chordates. E. Evolution of vertebrate classes. F. Evolution of jaws.

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BSC 2010L DEUTEROSTOMES

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  1. BSC 2010L DEUTEROSTOMES

  2. Principal Biological Concepts: A. Protostome vs. deuterostome (revisited). B. Chordate features. C. Chordate subphyla. D. Evolution of vertebrates from early chordates. E. Evolution of vertebrate classes. F. Evolution of jaws. G. Adaptations to terrestrial existence. H. Endothermy. I. Cladistic analysis.

  3. Remember protostome & deuterostome dichotomy

  4. Phylum Echinodermata A. secondary radial symmetry - bilateral in larvae B. endoskeleton - calcareous "test" C. water vascular system

  5. 4 classes 1. sea stars (class Asteroidea) 2. brittle stars (class Ophiuroidea) 3. sea urchin (class Echinoidea) 4. sea cucumbers (class Holothuroidea)

  6. Echinodermata 4 classes 1. sea stars (class Asteroidea) 2. brittle stars (class Ophiuroidea) 3. sea urchin (class Echinoidea) 4. sea cucumbers (class Holothuroidea)

  7. Class Asteroidea sea stars

  8. Anatomy of a sea star

  9. Class Ophiuroidea brittle star

  10. Class Echinoidea - sea urchins & sand dollars

  11. Class Holothuroidea - sea cucumbers

  12. Chordates (phylum Chordata) 3 characters - present at some point in life 1. notochord 2. pharyngeal gill slits 3. dorsal, hollow,nerve cord

  13. Chordata 3 subphyla - 2 "protochordates" and vertebrates 1. subphylum Urochordata -tunicates or sea squirts 2. subphylum Cephalochordata - lancelets (Amphioxus) 7. subphylum Vertebrata - vertebrates

  14. Chordata Subphylum Urochordata -tunicates or sea squirts

  15. Chordata Subphylum Urochordata -tunicate larva

  16. Chordata Subphylum Cephalochordata - lancelets (Amphioxus)

  17. 1.Class Myxini - hagfishes 2. Class Cephalaspidomorphi - lampreys 3. Class Chondrichthyes - cartilagenous fishes -sharks, rays, skates "Osteichthyes" 4. Class Actinopterygii - ray-finned fishes 5. Class Actinistia - lobe-finned fishes 6. Class Dipnoi - lungfishes 7. Class Amphibia - frogs, toads, salamanders 8. Class Mammalia - mammals "Reptilia" 9. Class Testudines 10. Class Lepidosauria - snakes, lizards, tuatara 11. Class Crocodilia - alligators and crocodiles 12. Class Aves - birds Subphylum Vertebrata - 12 classes

  18. Class Myxini - hagfishes

  19. Class Cephalaspidomorphi - lampreys

  20. Class Chondrichthyes - cartilagenous fishes -sharks, rays, skates

  21. "Osteichthyes" - informal name for bony fishes Class Actinopterygii - ray-finned fishes Class Actinistia - lobe-finned fishes Class Dipnoi - lungfishes

  22. Class Actinopterygii - ray-finned fishes

  23. Class Actinistia - lobe-finned fishes

  24. Class Dipnoi - lungfish

  25. The Devonian radiation of fishes

  26. The evolution of vertebrate jaws

  27. Anatomy of a trout, a representative bony fish

  28. Class Amphibia - amphibians - frogs, toads, salamanders

  29. ”Reptilia" - informal name for reptile classes Class Testudines - turtles Class Lepidosauria - lizards, snakes, tuatara Class Crocodilia - crocodilians

  30. The amniotic or cleidoic egg

  31. Class Testudines - turtles

  32. Class Lepidosauria - lizards, snakes, tuatara

  33. Class Crocodilia - crocodilians

  34. Phylogeny of the amniotes

  35. Class Aves - birds

  36. The avian wing and feather

  37. Archaeopteryx, a Jurassic bird-reptile

  38. Class Mammalia - mammals

  39. Cladistic Analysis exercise You must complete this and hand it in before you leave (DS3 - 10 pts.) Introduction to cladistics - http://www.ucmp.berkeley.edu/clad/clad1.html

  40. Constructing a phylogenetic tree using cladistic analysis

  41. Building a phylogenetic tree of dinosaurs

  42. “32A Traditional Animal Phylogenetic Tree” and “34A Characteristics of Chordates” on Student Media CD-ROM for review of material from this lab.

  43. Lab practical next week. A. Sign up sheets go on-line Monday October 10. B. Review lab sessions will be Saturday October 15, and Sunday October 16, from 10:00 - 4:00 pm. C. Practical exams will be given Monday October 17 through Wednesday October 19. D. 30 stations E. 1 question per station F. 60 seconds per station G. NO GOING BACK H. Practical covers labs 1, 4, 5 and 7, in roughly equal proportions. I. You must bring a photo ID to the exam.

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