Grantsville, Utah - 7.5 Minute Series Topo Map Southern California and many individual species are

and many individual species are illustrated with 1

including the Kaibab Limestone

formations

Perfectly preserved 36-million-year-old tsetse flies in Colorado

Grantsville, Utah - 7.5 Minute Series Topo Map Southern California and many individual species areThe distinctive characteristic of a topographic map is that the shape of the Earth's surface is shown by contour lines. Contours are imaginary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steepness of slopes. A topographic map shows more than contours. The map also includes