Author:

Stidd,B.M.

Year:

1980

Title:

The Neotenous origin of the pollen organ of the Gymnosperm Cycadeoidea and implications for the origin of higher Taxa.

Reference:

Stidd,B.M. (1980) The Neotenous origin of the pollen organ of the Gymnosperm Cycadeoidea and implications for the origin of higher Taxa. Paleobiology Vol. 6 # 2 P. 161- 167

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