Nature Communications (Sep 2018)
New suspension-feeding radiodont suggests evolution of microplanktivory in Cambrian macronekton
Abstract
Planktonic life was well established by the Cambrian, but few nektonic filter feeders have been identified. Here, the authors provide fossil evidence that Pahvantia hastata was a suspension-feeder that likely captured much smaller plankton than any other known free-swimming animals of that time.