Cretaceous Arctic silicoflagellates
Geo-Marine Letters
By: D. Bukry
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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.
| 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 |
| Larger Work Title | Geo-Marine Letters |
| First page | 57 |
| Last page | 63 |
| Google Analytic Metrics | Metrics page |