The University of Wyoming is celebrating National Fossil Day this Wednesday from 4-6 p.m. The public can explore mammal and bird skulls both modern and ancient as well as ancient plants from the dinosaur age. UW’s Geological Museum director Mark Clementz says the goal of the event is "for visitors to gain a deeper appreciation for the fossil wealth of our state, and a better understanding of how important these fossils are in helping scientists interpret major events in Earth history, including the evolution and diversification of life on our planet." Dinosaur expert, Brian Switek will be the event guest speaker at 6 p.m. in room 216 of the Geology Building.National Fossil Day is open to all ages.