Time-averaged fossil communities may imply false stability

Ian Randall | 5 April 2010

The ecological information which can be gleaned from the fossil record is controlled by the processes of accumulation involved, according to a paper by the University of Chicago, which is to be published in the May issue of The American Naturalist.

Acantharians plumb the depths to aid reproduction

Ian Randall | 9 March 2010

The reproductive cysts of acantharians sink seasonally from surface levels of the ocean to deeper waters, oceanographers at the University of Southampton believe. These oft-overlooked single-celled radiolaria, which have mineral skeletons, are believed to behave this way to exploit an annual increase in food.