Fossils are the preserved remains or traces ... Some species exhibit little change over long periods, a phenomenon known as stasis. Punctuated equilibrium suggests that evolutionary development ...

Which evolutionary factors are primarily responsible for the periods of stasis -- in which lineages persist without change -- that can be observed in the fossil record? In seeking the answers to ...

Patterns of macroevolution are easy to spot on the tree of life when one considers big events like the abrupt appearance of tetrapods in the fossil record, long periods of stasis like that ...