LATE CAMBRIAN AND EARLY ORDOVICIAN STEM GROUP CHITONS (MOLLUSCA: POLYPLACOPHORA) FROM UTAH AND MISSOURI

Abundant silicified shell plates (valves) of some of the oldest-known chitons were recovered from the Late Cambrian Notch Peak Formation of Utah. The chiton fauna is dominated numerically by Matthevia wahwahensis new species, but also includes another mattheviid, Eukteanochiton milleri new genus and...

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Veröffentlicht in:	Journal of paleontology 2004-07, Vol.78 (4), p.675-689
Hauptverfasser:	VENDRASCO, MICHAEL J, RUNNEGAR, BRUCE
Format:	Artikel
Sprache:	eng
Schlagworte:	Cambrian Canals coastal environment depositional environment diagenesis Dolomite Early Ordovician epoch Endangered & extinct species Eukteanochiton milleri faunal studies Fossils Geology intertidal environment Invertebrata invertebrate lithostratigraphy Lower Ordovician Matthevia wahwahensis Millard County Utah Mollusca Mollusks morphology new taxa Notch Peak Formation Ordovician Orthriochiton utahensis paleoecology Paleoloricata Paleontology Paleozoic Paratypes Polyplacophora preservation Robustum nodum Sediments Silurian Stromatolites Surface areas taxonomy Tunnels United States Upper Cambrian Utah Valves
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