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opacity: Sue the T Rex
opacity: Field Museum - Eocene gar fin detail - Masillosteus janei.jpg
opacity: Field Museum - trilobite - Cybele pander - found in St. Petersburg, Russia.jpg
opacity: Field Museum - Permian amphibian - primitive tetrapod - Cacops aspidephorus - Oklahoma.jpg
opacity: Field Museum - Permian - Sphenacodontid synapsid - Sphenacodon ferox - New Mexico.jpg
opacity: Field Museum - Astroceras sp. fossil cephalopod mollusk ammonite.jpg
opacity: Field Museum - Ordovician trilobite - Hoplolichas furcifer - St. Petersburg, Russia.jpg
opacity: Field Museum - Cretaceous theropod dinosaur - Dromaeosaur (cast).jpg
opacity: screaming shadow (early horse tail)
opacity: Field Museum - intricate supports for dinosaur fossils - vertebrae of a dinosaur spine.jpg
opacity: Field Museum - Silurian trilobite in a tucked defensive position - Gravicalymene celebra - Chicago area, Illinois.jpg
opacity: Field Museum - Eocene monitor lizard - Saniwa ensidens - head (and fish).jpg
opacity: Field Museum - Devonian trilobite - Phacops megalomanicus (now Drotops megalomanicus ?) - Morocco.jpg
opacity: holiday Sue
opacity: Paraceraurus exsull (trilobite)
opacity: Field Museum - Eocene paddlefish detail - Crossopholis magnicaudatus_.jpg
opacity: Field Museum - Ordivician sea lily - crinoid - Xenocrimus baeri - Ridgeville, Ohio.jpg
opacity: Field Museum - Devonian trilobite - Eldredgeops rana - Sylvania, Ohio.jpg
opacity: Field Museum - Eocene pregnant stingray detail - Asterotrygon maloneyi.jpg
opacity: Field Museum - Sue the T Rex's teeth.jpg
opacity: Field Museum - trilobite - Peronopsis interstrictus - Millard County, Utah.jpg
opacity: Field Museum - trilobite - Phacops rana milleri - Sylvania, Ohio.jpg
opacity: Sue the T-Rex - teeth detail (model skull).jpg
opacity: Field Museum - Eocene carnivoran, possibly Paroodectes, possibly a tree dweller from the long tail for balance.jpg
opacity: Field Museum - Ordovician trilobite - Paraceraurus exsull - St. Petersburg, Russia.jpg
opacity: Field Museum - Devonian trilobite - Koneprusia brutoni - Morocco.jpg
opacity: Field Museum - Eocene stingray detail - Heliobatis radians.jpg
opacity: Cybele panderi (trilobite), top-down
opacity: ammonoid mollusk, Microderoceras birchi, Jurassic