Wikipedia: Fetus
Hyperlinked article about the embryo in later stages of development, from the third month of pregnancy until birth in humans.
en.wikipedia.org/wiki/Fetus
Multi-Dimensional Human Embryo
Three-dimensional image reference of the human embryo based on magnetic resonance imaging, for those interested in studying and teaching human development.
embryo.soad.umich.edu
MedlinePlus: Fetal Development
Illustrations and descriptions about the development of the fetus through its various stages.
www.nlm.nih.gov/medlineplus/ency/article/002398.htm
BabyCenter: Fetal Development
Diagrams that show how the baby is changing as he grows.
www.babycenter.com/fetaldevelopment
About.com: Fetal Development
Features ultrasound pictures, postcards, and links to fetal development sites.
pregnancy.about.com/cs/fetus
American Pregnancy Association: Fetal Development
An overview of first, second, and third trimester of fetal development, from the American Pregnancy Association.
www.americanpregnancy.org/duringpregnancy/fetaldevelopment1.htm