Orthopithonella collaris sp. nov., a new calcareous dinoflagellate cyst from the K/T boundary (Fish Clay, Stevns Klint/Denmark).
A new calcareous dinoflagellate cyst species, Orthopithonella collaris sp. nov., is described from the Cretaceous/Tertiary (K/T) boundary clay (Fish Clay) of Stevns Klint, Denmark, on the basis of SEM studies and light-microscopic analyses of thin sections of single specimens. The species has been found exclusively in the Fish Clay and as such may be a potential marker for the K/T boundary. Its pulse-like occurrence is thought to be due to the abrupt, relatively short-term ecological catastrophe associated with the K/T boundary event.
Wendler
J
J
Universität Bremen, Fachbereich 5 Geowissenschaften, Postfach 330440, D-28334, Bremen, Germany
Wendler
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I
Willems
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