Lycopodium
Lycopodium strobilus longitudinal section
Lycopodium sporangium section
Lycopodium sporangium section early in development
Selaginella shoots
Selaginella strobilus section
Selaginella strobilus section, cleared tissue
Selaginella microsporangium section
Selaginella megasporangium section
Selaginella megasporangium section
resurrection plant before and after watering
resurrection plant before watering
resurrection plant after watering
Psilotum in pot
Psilotum sporangia closeup
Equisetum arvense sterile and fertile shoots
Equisetum shoots
Equisetum strobilus longitudinal section
Equisetum sporangia in strobilus longitudinal section
Equisetum spores witih attached elators
    Lepidodendron fossil
Lepidodendron fossil
Lepidophloios fossil
Sigillaria fossil
Calamites fossil
Calamites fossil
fossil (taxon unknown)
Sphenophyllum or Annularia fossil
Annularia fossil
coal ball
coal ball
fern compression
petrified wood

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