À propos de l'algue Elianella elegans PFENDER & BASSE, 1948, et ses soit-disants semblables, avec la description de Elianella brasiliana n.sp. Révision de la Collection Juliette PFENDER. 1e partie

Abstract

According to some authors, the three fossil algal forms discussed in this paper, Cordilites cretosus (REUS, 1846), Elianella elegans PFENDER & BASSE, 1948, and Parachaetetes asvapatii PIA in RAO & PIA, 1936, are synonyms. However, we document that they represent three discrete species. The genus Elianella PFENDER & BASSE, 1948, gets unique features that make it easy to discriminate; we describe a new species from Albian limestones of Brazil. The other two genera, Cordilites POČTA, 1887, and Para-chaetetes DENINGER, 1906, share some common features, such as having a thallus made of a lattice-net-work with columns (filaments) and rows. However, on the basis of their diagnostic criteria, the species Cordilites cretosus and Parachaetetes asvapatii should not be confused.