How does the hominid (hominin) fossil record show " mosaic evolution "?

•     How does the hominid (hominin) fossil record show "mosaic evolution"? Define the term and provide an example from hominin fossil record. Use example(s) from the following fossil selections to support your answer:

Australopithecus anamensis  

Australopithecus afarensis  

Homo erectus  

Homo heidelbergensis  

Homo neanderthalensis