Synapsids Animal Quiz

5 Questions

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Animal Quizzes & Trivia

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Questions and Answers
  • 1. 
    “Pelycosaurs” were a collection of terrestrial animals that lived during the Paleozoic and Mesozoic periods. Although each of the named “pelycosaurs” collectively form a polyphyletic group, we can be confident that each pelycosaur is a member of these two clades, (choose two)
    • A. 

      Amniota.

    • B. 

      Dinosauria.

    • C. 

      Mammalia.

    • D. 

      Synapsida.

    • E. 

      Therapsida.

  • 2. 
    The ancient Dinocephalian Moschops shows the typical pattern of ribs that expect from basal therapsids. The only group of vertebrae that Moschops does not have ribs projecting from are the
    • A. 

      Cervical vertebrae.

    • B. 

      Thoracic vertebrae.

    • C. 

      Lumbar vertebrae.

    • D. 

      Sacral vertebrae.

    • E. 

      Caudal vertebrae.

  • 3. 
    A suite of changes occurred between the least-derived therapsids and their more-derived descendants. For example, the temporal fenestra
    • A. 

      Increased in size.

    • B. 

      Decreased in sized.

    • C. 

      Stayed the same size, but shifted location.

    • D. 

      Duplicated to form a diapsid state.

    • E. 

      Therapsids don’t have temporal fenestrae.

  • 4. 
    A suite of changes occurred between the least-derived therapsids and their more-derived descendants. For example, the dentary
    • A. 

      Greatly increased in proportion within the mandible.

    • B. 

      Became the smallest bone in the mandible.

    • C. 

      Greatly enlarged within maxilla.

    • D. 

      Became the smallest bone in the maxilla.

    • E. 

      Therapsids don’t have a dentary.

  • 5. 
    A suite of changes occurred between the least-derived therapsids and their more-derived descendants. For example, the quadrate
    • A. 

      Became important to jaw articulation and is now known as the incus.

    • B. 

      Was freed up from jaw articulation and is now known as the malleus.

    • C. 

      Was freed up from jaw articulation and is now known as the incus.

    • D. 

      Became important to jaw articulation and is now known as the malleus.

    • E. 

      Is also known as the stapes.