(Response to #3) Well, gee, THAT'S easy! It takes longer to cross the six lanes than it does just two, so you give them triple the green time! What's that, there's more traffic on the six-lane? Just tell them to go the other way, then. [Hey - it's as logical as some DOTs seem to be . . .]

Bones are NOT the only things that fossilize! Nor is fossilization limited to similar things such as shells, exoskeletons, or teeth. Fossil leaves are an example of something that wasn't bone or bony, and not even hard. Fossils of footprints / tracks / burrows / holes, ripple patterns, feces, and mud cracks are all examples of entities which weren't necessarily even solids. There are fossils of jellyfish (http://news.nationalgeographic.com/news/2007/10/071031-jellyfish.html), octopi (http://news.nationalgeographic.com/news/2009/03/090319-octopus-fossil-picture.html), worms (http://images.google.com/imgres?imgurl=http://www.fossilmuseum.net/Fossil_Sites/Mazon-Creek/Astreptoscolex-anasillosus/ASTRIPTOSCOLEX.jpg&imgrefurl=http://www.fossilmuseum.net/Fossil_Sites/Mazon-Creek/Astreptoscolex-anasillosus/Astreptoscolex.htm&usg=__OyRxQlMXd9u18b_q5DyxN7L3IHM=&h=413&w=550&sz=42&hl=en&start=32&um=1&itbs=1&tbnid=z7ieGclJh9IeOM:&tbnh=100&tbnw=133&prev=/images%3Fq%3Dfossil%2Bworms%26ndsp%3D20%26hl%3Den%26rlz%3D1T4SUNA_enUS316%26sa%3DN%26start%3D20%26um%3D1), and on and on.