Morphometry of the Eocene nannofossil Reticulofenestra umbilicus lineage and its biochronological consequences

Morphometruc measurements of Eocene and early Oligocene reticulofenestrids from DSDP Site 523 in the South Atlantic show that a 90% size increased led to the appearance of Reticulofenestra umbilicus. This increase occurred between about 45.2 Ma and 42.9 Ma. The attempts made to recognize R. umbilicu...

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Veröffentlicht in:	Palaeogeography, palaeoclimatology, palaeoecology palaeoclimatology, palaeoecology, 1986-10, Vol.57 (1), p.103-116
Hauptverfasser:	Backman, Jan, Hermelin, J.Otto R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth sciences Earth, ocean, space Exact sciences and technology Marine Paleobotany Paleontology Stratigraphy
Online-Zugang:	Volltext
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