1. Archaeopteryx means "early wing" and is the paleontologist's Rosetta stone seemingly providing the perfect evidence for the otherwise elusive transition creatures which should fill the rocks with their fossil remains. First discovered in 1861, it is the purported transition between the dinosaur and the bird; seven specimens are claimed to exist.
Photo: The Berlin archaeopteryx specimen. Courtesy of H. Raab. (CC A-SA 3.0 Unported)
When claims are made that certain animals known only by their fossils are "extinct," all that is really meant is that no living specimens have been found. For example, the oceans are the least explored area of this planet and undoubtedly contain many creatures that are passing into extinction without ever having been discovered. The plesiosaur may possibly be one such example.
Photo: Skeleton of Columbian mammoth. Courtesy of WolfmanSF. (CC-BY-SA 3.0)
Be amazed at what happens in the newborn baby with the changes that occur in the circulatory system and lungs at the time of birth, presented by Joseph Kezele, M.D. Understand the processes that must happen for a normal...