HOUSE RANGE WHEELER SHALE FORMATION WEEKS FOSSIL PIOCHE RELATED CAMBRIAN EXPLOSION FOSSILS OF UTAH UTAH TRILOBITES AMERICAN WHEELER PHOTOGRAPHS THE HOUSE RANGE ARGUABLY FOSSILIFEROUS IN FACT GEOLOGICAL MOSAIC GEOLOGICAL TIME THE CAMBRIAN PERIOD FOSSIL RECORD FAMOUS CAMBRIAN IN THE WORLD ACCOMPANYING OVERLYING EXPOSED NEARBY MOUNTAIN RANGES WEST THE TOWN FEATURE IN THE HOUSE OUTCROPS LACKS CERTAIN LAYERS SHELLY DIVERSE BIOTA TAXA THE MORE BURGESS OUTCOME PRESERVATION CONDITIONS SOMETIMES THE CENTRAL OF THE HOUSE LIMESTONE BROAD DIVERSITY HORIZONS QUALIFY DEPOSITS THE EXTRAORDINARY FOSSILIZED LIFE FORMS SOFT PARTS LOWER CAMBRIAN WESTERN SHALLOW SEA SEDIMENTS RIVERS FLOWING SANDY LOWLANDS EASTERN SAND SHORELINE EVENTUALLY QUARTZITE LITHIFICATION SILTSTONE THE MIDDLE LATE CAMBRIAN INLAND SEA SUBSIDENCE COMPLETE SEQUENCE THE EQUATOR WATER TEMPERATURE THE COMBINATION SILT THE TRILOBITES PARTICULARLY MULTIPLE MUSEUMS SPECIES TRILOBITE ELRATHIA ORDER AGNOSTIDA INVERTEBRATES SPONGES CHANCELLORIA BRACHIOPODS ECHINODERMS ECHINODERM CLASS EOCRINOIDEA CRINOID TWENTY ARTHROPODS ANNELIDS PRIAPULIDS THE PREDATOR TERROR BASAL CHELICERATE SINENSIS CHENGJIANG BIOTA NARAOIA WIWAXIA PRIMITIVE ANNELID THE BURGESS SHALE STRATIGRAPHY ROCKS PRECAMBRIAN PROTEROZOIC MILLARD COUNTY ALONE ALMOST EVERY MAYBE JURASSIC CRETACEOUS CLAIM DISTINCT ORDOVICIAN PROSPECT MOUNTAIN MIDDLE CAMBRIAN HOWELL WHIRLWIND SWASEY NOTCH PEAK FORMATION POGONIP GROUP THE FILLMORE PERSONAL COMMUNICATION WITH ROBERT THE CHART THE RIGHT SHOWS REPRESENTATION OF RECENTLY TAPHONOMY PRESERVE NORMALLY CREATURES BIOFACIES MUTUALLY EXCLUSIVE AUTHORS HYPOTHESIZE CAUSE BIOTURBATION IRRIGATION REDUCED ORGANIC DECAY MEANS SULFATE REDUCTION CHEMICAL PROCESS ALKALINITY PRECIPITATED PORE SPACES RESTRICTED BACTERIAL BURROWS BOTTOM EXHIBIT DOLOMITE FORMING PROBABLY DEPOSITION INCREASING BOTTOM WATER OXYGEN CONTENT MEDIATED RAPID DECOMPOSITION SOFT TISSUES COLONIZATION BENTHIC FAUNA JOURNAL OF MUSEUM PALEOBIOLOGY GEOLOGICAL HISTORY TREE OF LIFE EVOLUTION