A new Late Cretaceous (Maastrichtian) serial planktic foraminifer (Family Heterohelicidae) with early planispiral coil and revision of Spiroplecta Ehrenberg, 1844

Marius Dan Georgescu, Sigal Abramovich

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A new planktic foraminifer, Hartella harti nov. gen., nov. sp. is described from the Maastrichtian sediments of the Atlantic Ocean. H. harti likely evolved from Fleisherites glabrans (Cushman). Spiroplecta Ehrenberg is reviewed and considered monospecific. The only species assigned to this genus is Spiroplecta americana Ehrenberg, which evolved from Heterohelix globulosa (Ehrenberg). It is demonstrated that the early planispiral coil developed in at least three separate lineages of serial planktic foraminifera in the Late Cretaceous (late Campanian-early Maastrichtian).

Original languageEnglish
Pages (from-to)687-698
Number of pages12
JournalGeobios
Volume42
Issue number6
DOIs
StatePublished - 1 Jan 2009

Keywords

  • Hartella harti nov. gen., nov. sp
  • Late Cretaceous
  • Planktic foraminifera
  • Taxonomy

ASJC Scopus subject areas

  • Stratigraphy
  • Space and Planetary Science
  • Paleontology

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