ENAlethopteris Pennsylvanica
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Transcription
Status: Complete
Alethopteris Pennsylvanica Lesquereux
Geol Penn 2 p 864 pl 11 fig 1.2.
Inferior pinnae bipinnatifid, with
short round pinnules, united half their
length; superior pinna pinnate only,
with long lanceolate linear & undulate
pinnules, slightly decurrent on the
rachis, and united at the base.
Perhaps only a variety of A.
lonchitides.
Coal Measures
Pottsville Pa
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