Paleoactaea bowerbanki was an early Eocene member of the buttercup family, Ranunculaceae, known from a single London Clay fruit from Sheppey. The fruit was relatively large for the genus and contained numerous sizeable seeds packed within the fruit wall. Its organisation resembles the fossil genus Paleoactaea, which in turn shows a striking resemblance to living Actaea, the baneberries.

Living Ranunculaceae are mostly herbaceous, but the isolated fruit does not prove the growth habit of this particular Eocene plant. The fossil is important because it preserves a rare reproductive structure from the family and shows an Actaea-like fruit lineage in the North Atlantic region during the Palaeogene.