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Journal of the Geological Society

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Some palaeontological implications of putative, long-term, gene reactivation

Geological Institute, University of Copenhagen, Øster Voldgade 10, 1350 Copenhagen, Denmark (e-mail: rvdingle@aol.com)

The reactivation of dormant genes in fossil lineages after long time periods is considered a likely evolutionary mechanism. This would not violate Dollo's law on evolutionary irreversibility in a genetic sense, but the law might appear to be contradicted by certain intra- and inter-cladogenic phenotypic variations to at least the generic level. Practical effects would include potential complications for unravelling palaeontological phylogenies, and the recognition of the true status of some so-called Lazarus taxa.

KEYWORDS: Lazarus taxa, ostracodes, biological evolution, phylogeny

This article has been cited by other articles:

				G. HUNT MORPHOLOGY, ONTOGENY, AND PHYLOGENETICS OF THE GENUS POSEIDONAMICUS (OSTRACODA: THAEROCYTHERINAE) Journal of Paleontology, July 1, 2007; 81(4): 607 - 631. [Abstract] [Full Text] [PDF]