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LEAVES OF ARCHAEOSIGILLARIA VANUXEMII, A DEVONIAN LYCOPOD FROM NEW YORK
Author(s) -
FaironDemaret Muriel,
Banks Harlan P.
Publication year - 1978
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1978.tb06064.x
Subject(s) - devonian , apex (geometry) , biology , lamina , paleontology , margin (machine learning) , conical surface , late devonian extinction , botany , carboniferous , geometry , mathematics , computer science , structural basin , machine learning
The leaf of mid Devonian Archaeosigillaria vanuxemii from Gilboa, N.Y. is known to have a thick conical base. This study demonstrates by the uncovering technique the attachment of leaves to the stem, the flattened lamina that is deltoid in outline with a toothed margin, and an apex prolonged into a hair. Comparisons are made with specimens from Kazakhstan. The morphology of leaves of other species of Archaeosigillaria and the slowly accumulating data on leaves of Devonian lycopods are discussed.