Skip to Main Content
Skip Nav Destination

Microstratigraphic sampling of four measured sections in the Upper Cambrian Ore Hill Member of the Gatesburg Formation in south-central Pennsylvania produced a data set adequate for construction of ‘a composite standard superior to the composite range chart previously erected by Wilson (1951) for trilobite faunas of that unit. This new data set revealed the presence of two thin, widespread units not previously reponed from the central Appalachians: the Irvingella major Subzone al the top of the Elvina Zone and the Parabolinoides Subzone at the base of the Taenicephalus Zone. A new subzone, the Cliffia lataegenae Subzone, is proposed to...

You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Close Modal

or Create an Account

Close Modal
Close Modal