Estimating rates and patterns of morphological evolution from phylogenies: lessons in limb lability from Australian Lerista lizards
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Journal of Biology 2009, 8:19 doi:10.1186/jbiol112Published: 24 February 2009
Squamates (lizards and snakes) offer an exciting model system for research on the evolution of body form. A new phylogenetic study in BMC Evolutionary Biology of Australian lizards shows remarkable evolutionary lability in digit numbers among closely related species, but also highlights important challenges in this area.