| 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
Costatheca diskoensis | Knobloch (1981), Pl. II, fig. 13 | | | EK9 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 8 | | | EK13 | Costatheca diskoensis | Knobloch (1981), Pl. II, fig. 1 | | | EK18 | Costatheca diskoensis | AD, Knobloch (1981), Pl. II, fig. 2 | | | EK19 | Costatheca diskoensis | Knobloch (1981), Pl. II, fig. 3 | | | EK20 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 23 | | | EK24 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 15 | | | EK35 | Costatheca diskoensis | Knobloch (1981), Pl. IIII, fig. 12 | | | EK55 | Costatheca diskoensis | Knobloch (1981), Pl. IIII, fig. 16-17 | | | EK57 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 27 | | | EK21 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 25 | | | EK23 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 22 | | | EK34 | Costatheca diskoensis | Knobloch (1981), Pl. IV, fig. 7 | | | EK45 | Costatheca diskoensis | Knobloch (1981), Pl. III, fig. 8 | | | EK47 | Costatheca diskoensis | Knobloch (1981), Pl. IV, fig. 10 | | | EK48 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 9 | | | EK50 | Costatheca diskoensis | Knobloch (1981), Pl. II, fig. 16 | | | EK12 | Costatheca diskoensis | Knobloch (1981), Pl. II, fig. 18 | | | EK17 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 26 | | | EK22 | Costatheca diskoensis | Knobloch (1981), Pl. I, fig. 24 | | | EK25 |
|