Anthropology includes the study of human cultures, archaeology, paleontology and more.
Sedimentary rocks- Sedimentary rocks are generally not datable using isotopic methods because the grains in sedimentary rocks may come from many different rocks of different ages.
Isotopic age dating would not give the age of the sediment deposition or lithification, but rather the age of the source rocks.
- Human Evolution Timeline Hominid Clade Tree showing an example of uncertainty of arrangement. Unfortunately, it is scattered among many sources, some of the best of which -- science journals -- require costly subscriptions to read.
It is regrettable also that most of the photographic evidence that is web-available is limited to skulls.
The box at right, for instance, has links taking you to a variety of timeline graphics.