Biology - History of Life on Earth Timeline

  • BBC’s History of Life on Earth *****************

    Quality succinct description of earth history.
     
    Geological timeline
    During its dramatic 4.5 billion year history, Earth has gone through a series of major geological and biological changes. The timescale below highlights a number of notable prehistoric events and the geological periods in which they occurred. As things didn't get interesting from a biological perspective until around 570 million years ago, we've included a couple of zoomed in timelines to show the detail of more recent evolutionary history.
     
    Geological time periods

    Geologists have organised the history of the Earth into a timescale on which large chunks of time are called periods and smaller ones called epochs. Each period is separated by a major geological or palaeontological event, such as the mass extinction of the dinosaurs which occurred at the boundary between the Cretaceous period and the Paleocene epoch.

     
    Big Five mass extinction events

    Although the Cretaceous-Tertiary (or K-T) extinction event is the most well-known because it wiped out the dinosaurs, a series of other mass extinction events has occurred throughout the history of the Earth, some even more devastating than K-T. Mass extinctions are periods in Earth's history when abnormally large numbers of species die out simultaneously or within a limited time frame. The most severe occurred at the end of the Permian period when 96% of all species perished. This along with K-T are two of the Big Five mass extinctions, each of which wiped out at least half of all species. Many smaller scale mass extinctions have occurred, indeed the disappearance of many animals and plants at the hands of man in prehistoric, historic and modern times will eventually show up in the fossil record as mass extinctions. Discover more about Earth's major extinction events below.

  • BIOLOGICAL DIVERSITY: BACTERIA AND ARCHAEANS

    This exhibit provides a survey of that biodiversity through time, focusing on major lineages of organisms. Many of these lineages have gone extinct or currently exist at a much lower diversity than in the past, so there may be large exhibits on groups of organisms that are unfamiliar to you. They are featured because they play an important role in the history of life on Earth.

  • Deep History of Life on Earth Timeline ***************

    From the Howard Hughes Medical institute- “Scientists have constructed the timeline of life on Earth from two main types of evidence: geological evidence and genetic evidence.”
  • Earth's Timeline

    This webpage is continually breing improved, due to new technologies in measurment of the earth's crust and fossils.

  • Evolution of Life online Encyclopedia

    Imagine an electronic page for each species of organism on Earth..." - Edward O. Wilson
  • Evolutionary and Geological Timelines

    Includes: Evolutionary and Geological timelines.

  • First plants on land

    About four hundred and fifty million years ago, at the end of the Ordovician and in the beginning of the Silurian, the land was desolate and empty............

  • Fossil Resource Page from the National Park Service

  • On-Line Biology Book

    1. INTRODUCTION: THE NATURE OF SCIENCE AND BIOLOGY(REVISED 3/12/07)
    2. CHEMISTRY I: ATOMS AND MOLECULES(REVISED 3/12/07 )
    3. CHEMISTRY II: WATER AND ORGANIC MOLECULES(REVISED 3/12/07)
    4. CELLS I: ORIGINS(REVISED 3/12/07)
    5. CELLS II: CELLULAR ORGANIZATION(REVISED 3/12/07)
    6. TRANSPORT IN AND OUT OF CELLS(REVISED 3/12/07)
    7. CELL DIVISION: BINARY FISSION AND MITOSIS(REVISED 6/21/01)
    8. CELL DIVISION: MEIOSIS AND SEXUAL REPRODUCTION(REVISED 3/12/07)
    9. LAWS OF THERMODYNAMICS(REVISED 6/20/01)
    10. REACTIONS AND ENZYMES(REVISED 6/20/01)
    11. ATP AND BIOLOGICAL ENERGY(REVISED 3/12/07)
    12. CELLULAR METABOLISM AND FERMENTATION(REVISED 3/12/07)
    13. PHOTOSYNTHESIS(REVISED 6/24/01)
    14. INTRODUCTION TO GENETICS(REVISED 6/21/01)
    15. GENE INTERACTIONS(REVISED 6/21/01)
    16. DNA AND MOLECULAR GENETICS(REVISED 3/12/07)
    17. HUMAN GENETICS(REVISED 6/21/01)
    18. PROTEIN SYNTHESIS(REVISED 3/12/07)
    19. CONTROL OF GENE EXPRESSION(3/12/07)
    20. PLANTS AND THEIR STRUCTURE(REVISED 3/12/07)
    21. PLANTS AND THEIR STRUCTURE II(REVISED 3/12/07)
    22. FLOWERING PLANT REPRODUCTION: Flower Structure(REVISED 6/22/01)
    23. FLOWERING PLANT REPRODUCTION: Fertilization and Fruits(REVISED 6/22/01)
    24. PLANT HORMONES AND NUTRITION(REVISED 6/22/01)
    25. ANIMAL CELLS AND TISSUES(REVISED 3/12/07)
    26. ANIMAL ORGAN SYSTEMS AND HOMEOSTASIS(REVISED 3/12/07)
    27. THE INTEGUMENTARY SYSTEM(REVISED 6/21/01)
    28. THE CIRCULATORY SYSTEM(REVISED 3/12/07)
    29. LYMPHATIC SYSTEM AND IMMUNITY(REVISED 6/21/01)
    30. THE DIGESTIVE SYSTEM(REVISED 3/12/07)
    31. THE NERVOUS SYSTEM(REVISED 6/22/01)
    32. THE ENDOCRINE SYSTEM(REVISED 6/20/01)
    33. THE REPRODUCTIVE SYSTEM(REVISED 3/12/07)
    34. THE MUSCULAR AND SKELETAL SYSTEMS(REVISED 6/21/01)
    35. THE RESPIRATORY SYSTEM(REVISED 6/24/01)
    36. THE EXCRETORY SYSTEM(REVISED 6/21/01)
    37. DEVELOPMENT OF EVOLUTIONARY THEORY(REVISED 6/20/01)
    38. THE MODERN VIEW OF EVOLUTION(REVISED 8/8/01)
    39. PALEOBIOLOGY: FOSSILS AND TIME(NEW 9/27/01)
    40. PALEOBIOLOGY: THE PRECAMBRIAN: LIFE'S GENESIS AND SPREAD(NEW 9/27/01)
    41. PALEOBIOLOGY: THE EARLY PALEOZOIC(NEW 9/27/01)
    42. PALEOBIOLOGY: THE LATE PALEOZOIC(NEW 9/27 /01)
    43. PALEOBIOLOGY: THE MESOZOIC, AGE OF CYCADS AND DINOSAURS(NEW 9/27/01)
    44. BIOLOGICAL DIVERSITY: CLASSIFICATION(REVISED 6/20/01)
    45. BIOLOGICAL DIVERSITY: VIRUSES(REVISED 3/12/07)
    46. BIOLOGICAL DIVERSITY: BACTERIA AND ARCHAEANS(REVISED 3/12/07)
    47. BIOLOGICAL DIVERSITY: PROTISTS: STEM EUKARYOTES(REVISED 6/18/01)
    48. BIOLOGICAL DIVERSITY: FUNGI(REVISED 6/18/01)
    49. BIOLOGICAL DIVERSITY: NONVASCULAR PLANTS AND NONSEED VASCULAR PLANTS(REVISED 6/18/01)
    50. BIOLOGICAL DIVERSITY: SEED PLANTS(REVISED 6/18/01)
    51. BIOLOGICAL DIVERSITY: ANIMALS I(REVISED 6/18/01)
    52. BIOLOGICAL DIVERSITY: ANIMALS II(REVISED 6/18/01)
    53. BIOLOGICAL DIVERSITY: ANIMALS III(REVISED 6/18/01)
    54. HUMAN EVOLUTION(REVISED 6/21/01)
    55. POPULATION ECOLOGY(REVISED 6/22/01)
    56. COMMUNITY AND ECOSYSTEM DYNAMICS(REVISED 3/12/07)
    57. THE BIOSPHERE AND MASS EXTINCTIONS(REVISED 3/12/07)
    58. GLOSSARY(REVISED 8/8/01)
    59. DIVERSITY IN BIOLOGY(REVISED 12/5/01)
  • Plant Evolution Timeline

    Ddevised for research at Cambridge University's Department of Plant Sciences, offers sophisticated material on the development of earth's fauna. The project uses timeline graphics and links to delineate the evolutionary path of plants over geologic time.

  • TRANSITION OF PLANTS TO LAND

    TRANSITION OF PLANTS TO LAND - Dr. Paul F. Ciesielski - University of Florida