The Cambrian ‘basement’ of gastropod evolution
Publication: Geological Society, London, Special Publications
Volume 286
Pages 415 - 421
Abstract
The oldest gastropods are known from the uppermost Nemakit-Daldynian to lowermost Tommotian deposits. However, to trace ancestry before this time, when most metazoans did not possess shells, is difficult. Study of the oldest gastropods, diagnosed and discussed here, sheds some light on the earliest stages of evolution of major gastropod branches. It appears that the subclass Archaeobranchia served as the base for this early radiation.
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Geological Society, London, Special Publications
Volume 286 • 2007
Pages: 415 - 421
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© The Geological Society of London 2007.
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Published: 2007
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