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Chris
Chris asked in Science & MathematicsBiology · 9 years ago

What era did Cycads first evolve in?

Triassic

Permian

Jurassic

or

Cretaceous

also,

Which of these is NOT a Mesozoic gymnosperm group?

ginkgoes

cordaites

cycadeoids

cycads

1 Answer

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  • az_lender
    Lv 7
    9 years ago
    Favorite Answer

    First question: in the Permian

    (which is not usually considered an "era," but never mind). see reference below

    Second question: cordaites probably became extinct before the Mesozoic era

    Source(s): "Cycad Wood from the Lopingian (Late Permian) of Southern China," by S J Wang, X Y He, and L Y Shao, International Journal of Plant Sci., 2011.
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