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- Budd, GE, et al.
(författare)
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A critical reappraisal of the fossil record of the bilaterian phyla
- 2000
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Ingår i: BIOLOGICAL REVIEWS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY. - : CAMBRIDGE UNIV PRESS. ; 75:2, s. 253-295
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Recension (övrigt vetenskapligt/konstnärligt)abstract
- It has long been assumed that the extant bilaterian phyla generally have their origin in the Cambrian explosion, when they appear in an essentially modern form. Both these assumptions are questionable, A strict application of stem- and crown-group concept
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