Dinosaurs, and a rich variety of land based prehistoric life, achieved surprisingly massive sizes in comparison to present day life. This ability of dinosaurs to achieve gigantic sizes conflicts with studies which indicate that the largest of today's animals have reached their maximum size.

Many people have asked why the dinosaurs were so large, but an examination of the size limits on today's life indicates that a reduced gravity during the dinosaur's time would have allowed them to grow to gigantic sizes.

One explanation for this reduced gravity would be if the earth was smaller in both size and mass during the dinosaurs' time. There is geological evidence for the earth's increase in diameter since the dinosaur's time - an expanding earth. My book Dinosaurs and the Expanding Earth provides details of the controversial theory so you can examine why I believe this theory holds an astonishing truth.

The web site gives a brief introduction to some of the main concepts behind the theory. There are also links to other sites about gigantic dinosaurs and their lifestyles and the evidence for the Expanding Earth Theory, a Comments Section, a Quiz and some suggestions for Further Reading.

Stephen Hurrell