| Megaspores
Megaspores, also called macrospores, are a type of spore that is present in heterosporous plants. These types of plants have two spore types, megaspores and microspores. Generally speaking, the megaspore, or large spore, germinates into a female (egg-producing) gametophyte, which is fertilized by sperm produced by the male gametophyte developing from the microspore.
Source: http://en.wikipedia.org/wiki/Megaspore
Arcellites medusus | Knobloch (1984), Pl. XV, fig. 4 | | | EK63 | Arcellites medusus | Knobloch (1984), Pl. XV, fig. 7 | | | EK65 | Arcellites medusus | Knobloch (1984), Pl. XV, fig. 1 | | | EK80 | Arcellites medusus | Knobloch (1984), Pl. XV, fig. 8 | | | EK82 | Arcellites medusus | Knobloch (1984), Pl. XV, fig. 9 | | | EK62 | Arcellites medusus | Knobloch (1984), Pl. XV, fig. 3 | | | EK81 | Arcellites medusus | Knobloch (1984), Pl. XV, fig. 2 | | | EK79 | Arcellites medusus | Knobloch (1984), Pl. XV, fig. 9 | | | EK61 | Arcellites medusus | Knobloch (1984), Pl. XV, fig. 6 | | | EK64 | Bacutriletes argus | Knobloch (1984), Pl. VIII , fig. 8 | | | EK123 | Bacutriletes argus | Knobloch (1984), Pl. VIII , fig. 7 | | | EK126 | Bacutriletes argus | Knobloch (1984), Pl. VIII , fig. 9 | | | EK125 | Bacutriletes argus | Knobloch (1984), Pl. VIII , fig. 10 | | | EK122 | Bacutriletes argus | Knobloch (1984), Pl. VIII , fig. 11 | | | EK171 | Bacutriletes argus | Knobloch (1984), Pl. VIII , fig. 12 | | | EK127 | Bacutriletes kerharticensis | AD, Knobloch (1979), Pl. III, fig. 11 | | | EK193 | Bacutriletes kerharticensis | AD, Knobloch, (1979), Pl. II, fig. 12 | | | EK211 | Bacutriletes pragensis | AD, Knobloch (1979), Pl. IV, fig. 13 | | | EK196 | Bacutriletes pragensis | AD, Knobloch (1979), Pl. IV, fig. 14 | | | EK195 | Bacutriletes pragensis | AD, Knobloch (1979), Pl. IV, fig. 15 | | | EK194 |
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