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KN OWING THE ROCKS
COLLECTING AND THE LAW
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abundant amphibians animals Araucarioxylon arizonicum arthropods bedding planes biological Bisbee blastoids bones brachiopods bryozoa Cambrian carbon characteristics Chinle Formation CLASS COCHISE COUNTY COCONINO COUNTY COLLECTING FOSSIL collector common composed contain corals Cretaceous crinoids deposits Devonian dinosaur east echinoderms exposed extinct feet Figure fine-grained fish teeth ﬂat footprints forms fossil collecting fossil fish fossil localities fossil record fossiliferous Gastropods geologic range GILA Grand Canyon Highway hill insects invertebrates Jurassic Kaibab living mammals Mancos shale maps marine mastodon matrix miles south mineral Mississippian Moenkopi mollusks museum Naco NAVAJO COUNTY northern Arizona outcrops Paleo paleontologists Paleozoic Pennsylvanian period Permian Petrified Forest phylum phytosaurs PIMA COUNTY Placerias plant fossils plates Pliocene Precambrian preserved quarries Redwall Limestone reptiles roadcuts rock units sand sandstone seas sedimentary rocks sediments shell skeleton species specimens sponges stone strata tetrapod Township trackways Triassic trilobites Tucson usually valves vertebrate fossils vertebrates well-preserved