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Article: Randomness and diversification in the Phanerozoic: a simulation

Publication: Palaeontology
Volume: 29
Part: 4
Publication Date: December 1986
Page(s): 655 663
Author(s): Antoni Hoffman and Eugene J. Fenster
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How to Cite

HOFFMAN, A., FENSTER, E. J. 1986. Randomness and diversification in the Phanerozoic: a simulation. Palaeontology29, 4, 655–663.

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The Palaeontological Association (Free Access)


The essential features of the pattern of marine animal diversification in the Phanerozoic are reproduced by a stochastic, quasi-random simulation. The model assumes only (i) random variation in the origination and extinction of lineages and (ii) occurrence of two extraordinary events: 'Late Cambro-Ordovician radiation' and 'Late Permo-Triassic extinction'. It can mimic the shape of the curve of global diversity as well as the pattern of so-called evolutionary faunas.
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