| Comment: | We have no previous collections from Alaska that contain a fauna similar to this one. It does not resemble collections D223, D264, and D389 as stated on the label. The only other occurrence in Alaska for Clinocardium comoxense is a clay beneath Malaspina glacier near Point Manby, J. C. Russell, 1891, USGS 2496. Megayoldia thraciaformis and Macoma brota occur together in a similar fine gray silt in a collection from Chaix Hills, D334. This latter collection was once numbered 2496, but it was stated by Miller to be an error and it was renumbered accordingly. Large Megayoldia thraciaformis also occur in D259, Malaspina district, supposedly high in the Yakataga. Clinocardium comoxense was described from the Pleistocene in the Vancouver area. It belongs to the C. ciliatum group which is not reported older than Pliocene except for C. yakatagensis Clark which occurs in the Yakataga formation at least as low as 4,000 feet above the base, possibly to the base. Macoma brota, a specimen identical with the one in this collection, occurs in the Yakataga at 17805, 10,700 feet above the base. Age: Probably Pliocene; certainly no older than late Miocene. |