BTW, here’s a cool paper by Gustafsson et al. timing initial radiation of the family using the molecular clock. Includes speculation on the environmental conditions—their ancestral environment.
http://www.biomedcentral.com/1471-2148/10/177
BTW, here’s a cool paper by Gustafsson et al. timing initial radiation of the family using the molecular clock. Includes speculation on the environmental conditions—their ancestral environment.
http://www.biomedcentral.com/1471-2148/10/177