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 language | English |
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Pages (from-to) | 687-698 |
Number of pages | 12 |
Journal | Geobios |
Volume | 42 |
Issue number | 6 |
DOIs | |
State | Published - 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