As you can see it also gives loads of references at the bottom that you can look up for additional information.
Animal Diversity Web which is run by the University of Michigan Zoology Museum, but they don't do prehistoric.
The AMNH Library Digital Repository is an archive maintained by the Research Library for AMNH Scientific Publications, AMNH scholarly output and other original and published materials digitized by the Library. All information in the repository is freely accessible to scholars around the world to support their research.
A great collection of links to research institutions, labs and research technique protocols in the area of cell and molecular biology. Other key hadings for educational resources, communication and appraisal of web content in key topic areas. Mainly links to US based resources.
The world’s leading conservation organization, WWF works in 100 countries and is supported by 1.2 million members in the United States and close to 5 million globally. WWF's unique way of working combines global reach with a foundation in science, involves action at every level from local to global, and ensures the delivery of innovative solutions that meet the needs of both people and nature.
The journal publishes reviews and original contributions dealing with quantitative empirical and theoretical studies in the field of the analyis of animal behavior on the level of the individual population and community.
The Genetic Science Learning Center at The University of Utah is a nationally and internationally-recognized education program that translates science and health for non-experts. In addition to genetics, we address all areas of life science and health as well as other scientific fields.