home *** CD-ROM | disk | FTP | other *** search
/ Treasures of the America…Museum of Natural History / Treasures of the American Museum of Natural History.iso / pc / treasure / tr08 / t08cap01.pic (.png) < prev    next >
Macintosh Picture Format  |  1996-09-10  |  11.3 KB  |  640x40  |  4-bit (8 colors)
   ocr: The cross-section of this fossilized ammonite shows the unique construction of the shell, which was divided into a series of chambers. The air in the chambers provided buoyancy for the animal to float. (Photo by J. Coxe)