Analysis of evolutionary changes in a 10-million-year long Late Neogene lineage of planktonic foraminifera has revealed a pattern that is not consistent with either the gradualistic or the punctuational model of evolution. The lineage was in stasis over a considerable part of its total duration but underwent relatively rapid, but not geologically instantaneous, gradual morphologic change that did not lead to lineage splitting. The term punctuated gradualism is suggested for this evolutionary modality.--Modified journal abstract.

West: 89.0000 East: 89.0000 North: -11.0000 South: -11.0000

Expedition: 22

Site: 22-214

Provider: SEDIS Publication Catalogue

Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=1985-003769 (c.f. for more detailed metadata)

This metadata in ISO19139 XML format