Pg. 22 (table 2), 32 (fig. 7), 35. East Passage Formation. Mostly red, orange-brown, and gray-green phyllite, and thinly bedded, non-graded sandstone and siltstone. [Thickness not stated.] Probably fault bounded; in fault(?) contact with Lower Cambrian Pirate Cave Formation. May be equivalent of basal phyllites of Jamestown Formation of Conanicut Group (new). Fossils (trilobite PARADOXIDES identified by A.[R.] Palmer, personal commun., 1987). Age is considered Middle Cambrian, based on fossils and strong lithologic similarity to basal Jamestown.
[Type locality]: extensive series of outcrops on northwestern shore of Newport Neck [btw. Fort Adams and Castle Hill], adjacent to East Passage, [Newport 7.5-min quadrangle, Newport Co.], southern Narragansett Bay, southeastern RI.

Source: Publication.