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Early Radiation of Biomineralizing Phyla

  • Chapter
Origin and Early Evolution of the Metazoa

Part of the book series: Topics in Geobiology ((TGBI,volume 10))

Abstract

Phanerozoic rocks, from the Cambrian onward, teem with fossils of biomineralizing organisms. The long Proterozoic sequence, up to its very contact with the Phanerozoic, reflects an almost total absence of biologically controlled mineralization. Indications of calcareous incrustations of Proterozoic photosynthesizing organisms (Klein et al., 1987) are at most questionable, and in any case do not imply more than that mineralization may have been indirectly induced by biological activity. Records of biogenic magnetite in the Proterozoic (Chang and Kirschvink, 1989) suggest more direct biological control and are thus of considerable interest with regard to the early evolution of biomineralization. In terms of structural and mineralogical diversity, however, the transition to the Phanerozoic nevertheless represents a quantum jump.

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  1. Institute of Palaeontology, S-751 22, Uppsala, Sweden

    Stefan Bengtson

  2. Department of Earth Sciences, Cambridge University, Cambridge, CB2 3EQ, England

    Simon Conway Morris

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  1. Department of Integrative Biology and Museum of Paleontology, University of California, Berkeley, California, 94720, USA

    Jere H. Lipps

  2. Department of Geology, University of California, Davis, California, 95616, USA

    Philip W. Signor

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Bengtson, S., Morris, S.C. (1992). Early Radiation of Biomineralizing Phyla. In: Lipps, J.H., Signor, P.W. (eds) Origin and Early Evolution of the Metazoa. Topics in Geobiology, vol 10. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2427-8_14

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