On the type species of &amp;lt;i&amp;gt;Aubignyna&amp;lt;/i&amp;gt; and a description of &amp;lt;i&amp;gt;A. hamblensis,&amp;lt;/i&amp;gt; a new microforaminifer from temperate shallow waters

John W Murray,John E Whittaker,Elisabeth Alve

doi:10.1144/jm.19.1.61

On the type species of &lt;i&gt;Aubignyna&lt;/i&gt; and a description of &lt;i&gt;A. hamblensis,&lt;/i&gt; a new microforaminifer from temperate shallow waters

John W Murray, John E Whittaker + Show 1 more

Open Access

https://doi.org/10.1144/jm.19.1.61

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Abstract

Abstract. The genus Aubignyna Margerel, 1970 (type A. mariei) was originally described from the upper Pliocene of NW France. Examination and re-illustration of topotypes of A. mariei Margerel, 1970, the holotype of Buccella planidorso Atkinson, 1969 (from the Recent of Cardigan Bay, Wales) and syntypes of Rotalia perlucida Heron-Allen &amp; Earland, 1913 (from the Clare Island Survey, western Ireland) shows them to be conspecific. Consequently, the type species of Aubignyna becomes R. perlucida, for which a lectotype is chosen. A new species of microforaminifera formally described here is assigned to Aubignyna and shown to occur in a wide range of intertidal–shallow subtidal, brackish–normal marine estuaries and lagoons in Europe and North America.

Highlights

During preliminary ecological studies of the intertidal zone of an estuary in England (Alve & Murray, 1994) and detailed studies of the shallow subtidal zone of Scandinavian coasts (Alve & Murray, 1999), an undescribed species of microforaminifera was discovered
The second author had independently carried out a study of Aubignyna perlucida (Heron-Allen & Earland, 1913) and considered the possibility that the non-described species might consist of juveniles of that species
When viewed from the umbilical side, A .perlucida is almost indistinguishable from Haynesina germanica (Ehrenberg), with which it has been much confused in historical collections

Summary

Introduction

During preliminary ecological studies of the intertidal zone of an estuary in England (Alve & Murray, 1994) and detailed studies of the shallow subtidal zone of Scandinavian coasts (Alve & Murray, 1999), an undescribed species of microforaminifera (adult diameter < 130pm) was discovered. Type species: Aubignyna mariei Margerel, 1970 ( = Rotalia perlucida Heron-Allen & Earland, 1913) Aubignyna perlucida (Heron-Allen & Earland, 1913) (Plate 1, figs 1-14; Fig. Id)

Results

Conclusion