Geologic Time Spiral

TimeSpiral_091515

34″ diameter
Slabs of: orbicular granite, banded iron, red jasper, calcite, marble, granite, fossilized coral, quartzite, sodalite syenite, slate, travertine, limestone; Fossils: trilobites, gastropod, brachiopods, estaroid, orthoceras, rugose coral, crinoid, branchiosauria, pinecone, ammonites, pelecypod, coprolite, shrimp, dinosaur tooth, baculites, hazlenut leaf, fish, conifer, leptomeryx teeth, megaladon tooth, manatee teeth; Insets: pyrite, fossilized palmwood, dinosaur bone, peanut wood (teredolites), turitella (Elimia tenera)
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