Emendation of the foraminiferal genus <i>Cribrostomoides</i> Cushman, 1910, and its taxonomic implications

  • Jones R
  • Bender H
  • Charnock M
  • et al.
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Abstract

<p><strong>Abstract.</strong> A review of the taxonomic history of the agglutinated (benthonic) foraminiferal genus <i>Cribrostomoides</i> Cushman, 1910 reveals much confusion concerning its type species, coiling mode and apertural characteristics. We believe the originally designated type species of <i>Cribrostomoides</i> Cushman, 1910, <i>C. bradyi</i> Cushman, 1910, to be no more than varietally (i.e. infra-subspecifically) distinct from, and therefore a junior synonym of, <i>Haplophragmoides subglobosus</i> Cushman, 1910. The coiling of <i>Cribrostomoides</i>, as typified by <i>C. subglobosus</i> (Cushman, 1910), is in the form of an involute streptospire characterised by a repeated alternation in axis. The aperture of the genus is equatorially or asymmetrically placed and interio-areal and single (in megalospheric and juvenile microspheric specimens) to areal and multiple (in microspheric adults). In order to stabilise the concept of <i>Cribrostomoides,</i> we have designated lectotypes for both <i>C. bradyi</i> and <i>H. subglobosus,</i> and have also emended the generic diagnosis of Loeblich and Tappan (1987). Criteria for the discrimination of <i>Cribrostomoides</i> emend, herein and allied genera are tabulated.</p>

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Jones, R. W., Bender, H., Charnock, M. A., Kaminski, M. A., & Whittaker, J. E. (1993). Emendation of the foraminiferal genus &lt;i&gt;Cribrostomoides&lt;/i&gt; Cushman, 1910, and its taxonomic implications. Journal of Micropalaeontology, 12(2), 181–193. https://doi.org/10.1144/jm.12.2.181

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