1. Chapter 25 Phylogeny and Systematics

2. The Fossil Record And Geologic Time Chapter 25 Phylogeny and Systematics

3. Fossils provide an archive of life on Earth Chapter 25 Phylogeny and Systematics

4. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

5. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

6. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

7. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

8. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

9. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

10. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

11. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

12. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

13. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

14. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

15. Fossils provide an archive of life on Earth. Sedimentary rocks provide the richest source of fossils. Chapter 25 Phylogeny and Systematics

16. Sedimentary strata reveal the relative ages of fossils. Chapter 25 Phylogeny and Systematics

17. Radiometric dating can provide the absolute age. Chapter 25 Phylogeny and Systematics

18. Geologic eras and periods correspond to major transitions in fossil species. Chapter 25 Phylogeny and Systematics

19. The fossil record is substantial… Chapter 25 Phylogeny and Systematics

20. The fossil record is substantial… …but incomplete. Chapter 25 Phylogeny and Systematics

21. The fossil record is substantial… …but incomplete. It favors species that: Chapter 25 Phylogeny and Systematics

22. The fossil record is substantial… …but incomplete. It favors species that: existed for a long time were widespread had hard shells or skeletons Chapter 25 Phylogeny and Systematics

24. Continental drift has had a major impact on phylogeny Chapter 25 Phylogeny and Systematics

25. Continental drift has had a major impact on phylogeny. Pangaea formed in the late Paleozoic era and broke up in the early Mesozoic era. Chapter 25 Phylogeny and Systematics

27. The history of life is punctuated by mass extinctions. Chapter 25 Phylogeny and Systematics

29. Taxonomy: Chapter 25 Phylogeny and Systematics

30. Taxonomy: The identification and classification of species Chapter 25 Phylogeny and Systematics

31. Taxonomy: The identification and classification of species. Taxon: Chapter 25 Phylogeny and Systematics

32. Taxonomy: The identification and classification of species. Taxon: A single category of species. Chapter 25 Phylogeny and Systematics

33. domain kingdom phylum class order family genus species Chapter 25 Phylogeny and Systematics

34. domain kingdom phylum class order family genus species Chapter 25 Phylogeny and Systematics Dumb kings play chess on fine green sand.

35. domain kingdom phylum class order family genus species Chapter 25 Phylogeny and Systematics Dumb kings play chess on fine green sand.

36. domain kingdom phylum class order family genus species Chapter 25 Phylogeny and Systematics Dumb kings play chess on fine green sand. Eukarya Animalia Chordata Mammalia Carnivora Felidae Panthera pardus

37. Systematics: Chapter 25 Phylogeny and Systematics

38. Systematics: The study of biological diversity in an ecological context. Chapter 25 Phylogeny and Systematics

39. Phylogeny: Chapter 25 Phylogeny and Systematics

40. Phylogeny: The evolutionary development of a taxon from earlier taxa. Chapter 25 Phylogeny and Systematics

41. Cladistics: Chapter 25 Phylogeny and Systematics

42. Cladistics: The classification of species by their evolutionary descent. Chapter 25 Phylogeny and Systematics

43. Clade: Chapter 25 Phylogeny and Systematics

44. Clade: An evolutionary ancestor and all of its descendants Chapter 25 Phylogeny and Systematics

45. Clade: An evolutionary ancestor and all of its descendants. A clade is defined by its evolutionary novelties and shared characteristics. Chapter 25 Phylogeny and Systematics

46. Systematics can infer phylogeny from molecular data. Chapter 25 Phylogeny and Systematics

47. Parsimony Chapter 25 Phylogeny and Systematics

48. Parsimony, also called Occam’s Razor Chapter 25 Phylogeny and Systematics

49. Parsimony, also called Occam’s Razor, also called the KISS principle Chapter 25 Phylogeny and Systematics

50. Parsimony, also called Occam’s Razor, also called the KISS principle, says when offered several explanations, use the simplest. Chapter 25 Phylogeny and Systematics

51. KISSKISS

52. Keep I S

53. Chapter 25 Phylogeny and Systematics Keep It S

54. Chapter 25 Phylogeny and Systematics Keep It Simple, S

55. Chapter 25 Phylogeny and Systematics Keep It Simple, Stupid!

56. The simplest phylogenetic tree is the one that requires the fewest evolutionary changes. Chapter 25 Phylogeny and Systematics

57. “Molecular clocks” keep track of evolutionary time. Chapter 25 Phylogeny and Systematics

58. Phylogenetic trees are hypotheses Chapter 25 Phylogeny and Systematics

59. Phylogenetic trees are hypotheses. They incorporate extensive molecular and morphological data Chapter 25 Phylogeny and Systematics

60. Phylogenetic trees are hypotheses. They incorporate extensive molecular and morphological data. But they are “flourishing with lively debate.” Chapter 25 Phylogeny and Systematics