ammonites
USGS no. D1067 CO (Ordovician of the United States)

Also known as 61-ASn-RJR18

Where: Alaska (65.5° N, 167.4° W: paleocoordinates 7.3° N, 41.7° W)

• coordinate estimated from map

When: Early/Lower Ordovician (488.3 - 471.8 Ma)

Environment/lithology: offshore; lithified, massive, gray limestone and lithified, argillaceous limestone

• Contains scattered nodules and lenses of chert.

Size class: macrofossils

Collected by Sainsbury in 1962

Primary reference: C. L. Sainsbury. 1969. Geology and Ore Deposits of the Central York Mountains, Western Seward Peninsula, Alaska. United States Geological Survey Bulletin 1287:1-101 [A. Miller/S. Kolbe] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 101846: authorized by Arnold Miller, entered by Sarah Kolbe on 04.01.2011