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Ptilozamites is an extinct genus of pteridosperm (colloquially known as "seed ferns"), known from the Triassic and Early Jurassic of the Northern Hemisphere. It is associated with the pollen organ Harrisiothecium.
Ptilozamites was widespread across the Northern Hemisphere during the Late Triassic and Early Jurassic, with remains having been reported from Europe, Greenland and China.
Text excerpted from the Wikipedia article Ptilozamites by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
