Fossil megaspore floras from the Late Cretaceous of North America have been studied extensively, but primarily from the Western Interior Basin. Two new megaspore floras are described from eastern ...
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Nature - Gynospore or Megaspore? Cite this article Gynospore or Megaspore?. Nature 173, 63 (1954). https://doi.org/10.1038/173063c0 Download citation Issue date 09 ...
- larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte ...
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