title: The Cambrian radiation of shelly fossils.
abstract: One of the most significant events in the history of the organic world was the acquisition by animals of the ability to build a skeleton. This is of special interest because the overwhelming majority of known major groups (phyla) acquired that ability during a very short period (five to seven million years), early in the Cambrian. Recent fossil finds, especially in northern Asia, are adding much detail to our knowledge of this period.
authors.affiliation: A.Y. Rozanov is at the Palaeontological Institute of the USSR Academy of Sciences, Profsoyuznaya ul. 123, 117868 Moscow B321, Russia.
authors.forename: A Y
authors.initials: AY
authors.lastname: Rozanov