Marine planktonic organisms that undertake active vertical migrations over their life cycle are important contributors to downward particle flux in the oceans. Acantharia, globally distributed heterot
A standard biostratigraphic system, based upon diatom datum levels previously correlated to the paleomagnetic record, was applied to Deep Sea Drilling Project Sites 501/504 and...
Sediment depth is given in mbsf. Species abundance estimates as follows: A = abundant, F = few, R = rare, + = single specimen, - = searched for but not found, and ? = dubious...