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Cretaceous Arctic silicoflagellates

Geo-Marine Letters

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DOI: 10.1007/BF02463303

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Abstract

Cretaceous silicoflagellate assemblages from Arctic Ocean USGS Core 437 show Vallacerta siderea the most abundant species; most species of Lyramula disappear halfway up the core; only L. burchardae, n. sp., persists into the upper sections. These occurrences are untypical of the few documented Cretaceous assemblages from other areas. A Campanian or Maestrichtian age is suggested by correlation, but the uniquely high abundance of V. siderea and lack of Corbisema suggests that a difference in both age and general environment could be involved. If Core 437 is latest Maestrichtian, then the evidence from this core would constrain the timing of the ocean-freshening model for the Cretaceous-Tertiary boundary extinctions. ?? 1981 A.M. Dowden, Inc.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Cretaceous Arctic silicoflagellates
Series title:
Geo-Marine Letters
DOI:
10.1007/BF02463303
Volume
1
Issue:
1
Year Published:
1981
Language:
English
Publisher location:
Springer-Verlag
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
57
Last page:
63
Number of Pages:
7