Locality	Layer
	Apex Section, about 10 mi. NE Las Vegas	Eumorphoceras girtyi BZ
	Apex Section, about 10 mi. NE Las Vegas	Indian Springs Fm., above marker congl.
	Black Hills, Picture Canyon	Indian Springs Fm., basal portion
	Charleston Peak, nw Lucky Strike Wash	Bird Spring Fm, basal unit
	Frenchman Mountain section	Callville Fm.
	Las Vegas,Indian Springs, e of hill	Bird Spring Fm., 1-3 ft above base
	Las Vegas,Indian Springs,4.5 mi sw of	Bird Spring Fm., 1-3 ft above base
	Wildcat Wash SW	Indian Springs Fm., basal portion
	Wildcat Wash SW	Indian Springs Fm.,basal portion