New Criteria for the Classifications of the "Porostromatae" Algae

• Autores: Ovidiu Dragastan
• Localización: Revista española de micropaleontología, ISSN 0556-655X, Vol. 25, Nº. 3 (SEP-DIC), 1993, págs. 59-89
• Idioma: inglés
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• Resumen

  • The value of the generic and specific criteria presented and discussed for a part of the "Porostromatae" algae, which have a calcareous thallis composed of closely packed subcylindrical pores (tubes) or filaments sensu J. Pia (1927). Some attempts have already benn made to assing these structures to genera and species mostly referred to Cyanophyta and Chlorophyta.