Studying mammals: Food for thought
Studying mammals: Food for thought

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.

Figure 6
Figure 6: Jones, S., Martin, R. and Pilbeam, D. (1992) The Cambridge Encyclopaedia of Human Evolution, Cambridge University Press
Figure 6 (a) change in brain size (volume) in early and modern-day humans. (b) Plot of changes in body mass over the same period. The arrows indicate modern-day values. Given the approximations involved, the individual points are unreliable, but the trends are probably representative. Estimates of body mass of fossil species were derived from measurements of the length of long bones and are subject to error. (Note the unusual horizontal scale here, showing millions of years ago; the values increase from right to left - a pattern you may not have seen before.)

 5 Who were the ancestors of Homo sapiens?

Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has 50 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to University-level study, we offer two introductory routes to our qualifications. You could either choose to start with an Access module, or a module which allows you to count your previous learning towards an Open University qualification. Read our guide on Where to take your learning next for more information.

Not ready for formal University study? Then browse over 1000 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus371