| Note brown and white CJ7 jeep parked along the dirt trail, at lower center, in Coral Reef Canyon, Nevada. The bold exposures here belong to the geologically oldest subunit "member one" of the Upper Triassic Luning Formation, which in Coral Reef Canyon yields prolific quantities of tangled reef-forming corals and sponges, in addition to weathered-free brachiopods, pelecypods, gastropods, echinoids (sea urchins), belemnites (straight-shelled cephalopods related to squids), ammonites (an extinct order of cephalopod; the Triassic types are also called ammonoids), and not a few ichthyosaur skeletal elements. |