ammonites
Gaspé Peninsula, Percé, White Head Formation Unit 4 (Ordovician to of Canada)

Where: Québec, Canada (48.5° N, 64.2° W: paleocoordinates 22.3° S, 36.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: 4 Member (White Head Formation), Ashgill to Ashgill (449.5 - 428.2 Ma)

• "Unit" 4

• member-level stratigraphic resolution

Environment/lithology: gray, green, silty limestone and yellow shale

• Environmental call by T. Hanson.
• "[G]reenish-brown to grey sublithographic to silty limestone, with some coarse bioclastic limestone, in beds to about 8 cm, with yellow-weathered shaly interbeds to 4 cm."

Size classes: macrofossils, microfossils

Collection methods: Trepostome bryozoa and dalmanellacid brachiopods also present.

Primary reference: W. B. Skidmore and P. J. Lespérance. 1981. Gaspé Peninsula, Percé area. Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group Guidebook 1:31-40 [S. Holland/T. Hanson/T. Hanson] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24505: authorized by Steven Holland, entered by Tori Hanson on 08.08.2002