The Fossil Ferns of Petrified Forest National Park, Arizona, and Their Paleoclimatological Implications
نویسنده
چکیده
Approximately one-fifth (ten species) of the plant megafossils in the Chinle Formation in Petrified Forest National Park, Arizona are the remains of ferns or fern-like leaves. Four of the species are assigned to living families, two are assigned to extinct families and the others are unassigned. The nearest living relatives and morphological features of these plants indicates that they lived under a humid tropical to subtropical climate that could have been monsoonal. ____________________
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