title: Paleoceanography. Inconstant ancient seas and life's path.
authors.forename: Richard A
authors.initials: RA
authors.lastname: Kerr
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002118:Calcium / Q000032:analysis*; D002119:Calcium Carbonate / Q000032:analysis; D005580:Fossils; D055593:Geological Phenomena; D005844:Geology; D008274:Magnesium / Q000032:analysis*; D008974:Mollusca / Q000737:chemistry; D010933:Plankton / Q000737:chemistry; D012617:Sea Urchins / Q000737:chemistry*; D012623:Seawater / Q000737:chemistry*; D013995:Time
chemical_list: D002119:Calcium Carbonate; D008274:Magnesium; D002118:Calcium