Morphology and taxonomy of an almost forgotten fossil diatom Gaillonella sculpta EHRENBERG (Bacillariophyceae)

0459997 - BÚ 2017 RIV GB eng J - Journal Article
Usoltseva, M. - Houk, Václav
Morphology and taxonomy of an almost forgotten fossil diatom Gaillonella sculpta EHRENBERG (Bacillariophyceae).
Diatom Research. Roč. 31, č. 1 (2016), s. 39-49. ISSN 0269-249X. E-ISSN 2159-8347
Institutional support: RVO:67985939
Keywords : Miocene * Gaillonella * Pseudoaulacosira * taxonomy * valve ultrastructure. * Bacillariophyceae
Subject RIV: EF - Botanics
Impact factor: 1.677, year: 2016

Type material of Melosira sculpta (Ehrenberg) Kutzing from the Ehrenberg Collection was studied using light (LM) and scanning electron (SEM) microscopy. Comparison with Pseudoaulacosira moisseeviae (Lupikina in Brattseva etal.) Lupikina & Khursevich showed that they have very similar valve morphologies and should both belong to Pseudoaulacosira Lupikina & Khursevich. However, the species differ morphologically in several characters and so a new combination, Pseudoaulacosira sculpta (Ehrenberg) Usoltseva & Houk comb. nov. is proposed. Morphological and ultra-morphological features of this species are presented and discussed, including the presence of a septum.
Permanent Link: http://hdl.handle.net/11104/0260154