Living Fossil Kit, California  Educational Science Unit Hatch our own Living Fossils in 24-36 hours.   INSTRUCTIONS--- Pour contents of vial into the jar and fill half full with room temperature water. In 24 to 48 hours, the little creatures will hatch. They will be tiny at first but grow rapidly and mature in about one week to ten days. After they have completed their life cycle, just dry out the residue for about 2 weeks. Then add water again and have a new hatch! MC411 - Genius Apus longicaludatus Le Conte, California  Grow your "Very Own" Living Fossil The Genius Apus longicaludatus Le Conte (tadpole shrimp) date back to Triassic time, 190 million years ago. In dry lake beds, the eggs can survive long periods without water, also many temperature changes, and still hatch as soon as rains produce a lake. They are only found in the Western States.   Price:   $ 6.50 each.  GOOD PRICE