Dos nuevas Primofilices carbónicas de las provincias de La Rioja y San Juan

Raúl Leguizamon, Sergio Archangelsky

Abstract


"They are preserved as impressions of both vegetative and fertile organs. Sporae in situ have
been recovered. An amended diagnosis of the genus is provided as well as full descriptions
of the new species. The techniques used are briefly explained.
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