Skip to main content
Geosciences LibreTexts

1.5: Lab Exercise (Part B)

  • Page ID
    5438
  • Part B – Faunal Succession

    The use of animals and their preserved remains (fossils) can help build a highly precise time sequence, often with a higher resolution than absolute dating. In the following section, use this principle to answer the following questions.

    clipboard_e4e9571bea236a16f27375bc31b888c2d.png

     

    clipboard_e5b1900767a05e5f7c38604ea950b99f6.png

    10. Based on the assemblage of organisms (A-I) in this sample, what is the age of this rock?

    a. Economy                                             b. Southgate                                             c. McMicken                                             d. Mt. Hope

    e. Fairmount                                            f. Bellevue                                                g. Corryville                                             h. Mt. Auburn

     

    11. Which organism was the most useful in coming to this conclusion (which is the best index fossil)?

    a. Isotelus                                             b. Zygospira                                               c. Cyclonema                                           d. Vinlandostrophia

    e. Parvohallopora                                   f. Cincinnetina                                            g. Streptaster                                           h. Ambonychia

     

    12. Which organism was the least useful in coming to this conclusion (which is the worst index fossil)?

    a. Isotelus                                             b. Zygospira                                               c. Cyclonema                                           d. Vinlandostrophia

    e. Parvohallopora                                   f. Cincinnetina                                            g. Streptaster                                           h. Ambonychia