Paleontology of Late Proterozoic and Early Cambrian Rocks of East-central Alaska

The Middle Proterozoic to Early Cambrian Tindir Group and related sedimentary and volcanic rocks crop out in the vicinity of the Yukon River in east-central Alaska. These exposures occur in the Eagle, Tatonduk, Nation, and Woodchopper areas. Microfossils recently discovered in all four of these areas include representatives of bacterial, algal, fungal, indeterminate protistan, and metazoan groups. Overlying rocks contain previously described Early, Middle, and Late Cambrian trilobites, archeocyathids and other shelled macrofossils.