Also known as 60ABa131A

Where: Alaska (65.0° N, 141.2° W: paleocoordinates 5.1° N, 62.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Hillard Limestone Formation, Middle Cambrian (509.0 - 497.0 Ma)

• STRATIGRAPHIC RELATIONS: From Hillard Limestone, which regionally overlies the Early Cambrian Adams Argillite and is unconformably overlain by the lower part of the Rhoad River Formation. AGE: lower Middle Cambrian based on K. serrata which is conspecific with P. atavus. STRATIGRAPHIC POSITION: About 90 ft stratigraphically above 60ABa131B and at the base of a second boulder conglomerate that also protrudes into the Tatonduk River.

• bed-level stratigraphic resolution

Environment/lithology: lithified conglomerate

Size class: macrofossils

Reposited in the USNM

• COLLECTOR: A.R. Palmer and E.E. Brabb (1963). REPOSITORY: USGS and USNM.

Primary reference: A.R. Palmer. 1968. Cambrian trilobites of East-Central Alaska. United States Geological Survey Professional Paper 559(B) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64764: authorized by Austin Hendy, entered by Austin Hendy on 14.09.2006

Creative Commons license: CC BY (attribution)