The diatom genus Longinata Hajós (Bacillariophyta): structure, relationships and distribution

DAVID M. WILLIAMS; PAT A. SIMS

doi:10.11646/phytotaxa.591.3.3

Issue: Vol. 591 No. 3: 5 April 2023

Type: Article

Published: 2023-04-05

DOI: 10.11646/phytotaxa.591.3.3

Page range: 209-219

Abstract views: 54

PDF downloaded: 3

**The diatom genus Longinata Hajós (Bacillariophyta): structure, relationships and distribution**

DAVID M. WILLIAMS⁺⁻
PAT A. SIMS⁺⁻

The Natural History Museum, Cromwell Road, London, SW7 5BD, UK

Cretaceous diatoms Drepanotheca Cymatosiraceae relationships Algae

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Abstract

The diatom genus Longinata Hajós was first described from an Upper Cretaceous DSDP core. Its description was rudimentary with just a single light micrograph of the holotype. In this contribution we re-describe the species Longinata acuta using light and electron microscopy from specimens found in the same core, clarify what the type specimens are and the slide they come from, transfer Eunotogramma fueloepi Hajós to Longinata and provide a few comments on its relationships.

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