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Showing results for tags 'information hand-outs'.
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I an putting together some hand-outs for the Dallas Paleontological Society table to use at local events. We are committed to educating the public about the science of paleontology. Below is one proposed list that I have put together from different sources and re-worded to fit in a small space. Some of you may find mistakes or other things to add or even a better way to explain something. I would appreciate any help you can offer. Anyone should feel free to use this in any way you like. Any other material you think would make a good hand out would be appreciated. We have a nice deep time chart and a hand-out on age-dating fossils as well as diagrams of local strata. Thanks. 20 WAYS FOSSILS CAN BE FORMED DUPLICATION 1 Internal Mold (sediment in contact with inner surface solidifies then original dissolves) 2 External Mold (sediment in contact with outer surface solidifies then original dissolves) 3 External Cast (original outer surface dissolves and space fills with solidifying material) 4 Internal Cast (original inner surface dissolves and space fills with solidifying material) MINERALIZATION 5 Permineralization (space between cells fills with minerals that solidify) 6 Petrification (space between cells fills with silica binding to cellulose) 7 Repalcement (cells replaced with new minerals that solidify) 8 Recrystallizaion (replacement when the new minerals are a crystal form) TRACE FOSSIL 9 Tracks 10 Infilled Burrows 11 Coprolites (animal droppings) 12 Feeding Traces 13 Urolite (urine splatters) 14 Regurgitants (animal vomit) DESSICATION 15 Peat Pit 16 Tar Pit 17 Frozen Tundra OTHERS 18 Compression (thin carbon film formed by chemical change under pressure) 19 Resin Inclusion (Life trapped in resin which hardens into amber or copal) 20 Bioimmuration (impression formed on a shell by growing over another life form)
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