bradytely An exceedingly slow rate of evolution, manifest by slowly evolving lineages which survive much longer than would normally be expected. Living fossils (e.g. the coelacanth) and groups that have remained relatively stable with time (e.g. opossums and crocodiles) represent the low end of the bradytelic range. Compare HOROTELY; TACHYTELY.

bradytely An exceedingly slow rate of evolution, manifested by slowly evolving lineages which survive much longer than would normally be expected. Living fossils (e.g. the coelacanth) and groups that have remained relatively stable with time (e.g. opossums and crocodiles) represent the low end of the bradytelic range. Compare horotely and tachytely.