Here you will be able to find where I got my information from. If it was not listed under the picture or in the reading you will find it here.

Scott, Foersman Life Science   Copyright date: 1990

    pages- 226, 231, 232, & 233

The World Book Encyclopedia Copyright date: 1994

    Volume- 1 Page- 462

    Volume- 8 Page- 450

    Volume- 13 Page- 834

Microsoft (R) Encarta. Copyright (C) 1994 Microsoft Corporation. Copyright (C) 1994 Funk and Wagnalls Corporation.

Photographs:

All photos not credited are Microsoft Illustrations