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Selaginella schaffneri Hieron.

spore arrangement

Kubitzki et al
trilete
URI: http://eol.org/schema/terms/trilete

Tanım: spores bearing a Y shaped scar, indicating that they were arranged in a tetrahedral spore tetrad

Atıf: https://www.ucl.ac.uk/GeolSci/micropal/spore.html

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