There's nothing intrinsically wrong with this latest Aliki contribution to dinomania; it's just that it all seems a bit familiar. Some of the information appears to be culled from Ali ki's earlier (and admittedly, drabber) books. Other pages seem similar in con tent to Aliki's more recent volumes. Still, she has managed to provide a sim plified explanation of the history of paleontology in a format that even pre schoolers will comprehend. She reiterates much basic information about the separation of the continents, earth's time periods, and how scientists reconstruct dinosaurs from fossilized bones. Little information is provided about more recent dinosaur discoveries. Like the text, the illustrations in this book are reminiscent of other recent Aliki books on prehistoric life. Overall, this is a good book, but one which may duplicate information avail able in others. Cathryn A. Camper, Minneapolis Public Library Copyright 1988 Reed Business Information, Inc.