Road River Fm. (Above Trilobite Bed), Snake River, Yukon (Silurian of Canada)

Where: Yukon, Canada (65.3° N, 133.5° W: paleocoordinates 13.4° N, 52.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Road River Formation, Alexandrian (443.4 - 436.0 Ma)

• Lowest Silurian

• formation-level stratigraphic resolution

Environment/lithology: shale and calcareous shale

• Environmental call by T. Hanson.
• From a 10-foot shale and calcareous shale band.

Size classes: macrofossils, mesofossils

Primary reference: A. C. Lenz and M. Churkin, Jr. 1966. Upper Ordovician trilobites from Northern Yukon. Palaeontology 9(1):39-47 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 25168: authorized by Steven Holland, entered by Tori Hanson on 31.08.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Pterobranchia
 Graptoloidea - Normalograptidae
"Climacograptus normalis" = Normalograptus normalis
"Climacograptus normalis" = Normalograptus normalis Lapworth 1877 graptolite
Climacograptus scalaris var. normalis