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Horneophyton lignieri: Spores

Spores of Horneophyton

Spores of Horneophyton

Spore tetrads of Horneophyton. Diameter of a tetrad is about 50 µm.
The spores of Horneophyton are often still attached to each in so-called tetrads (sets of four).

Spores of Horneophyton

Spores of Horneophyton

Spore tetrads of Horneophyton. Diameter of a tetrad is about 50 µm. De spores bear small spines.

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