Where: Ontario, Canada (44.4° N, 75.7° W: paleocoordinates 26.3° S, 52.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Sherman Falls Formation (Trenton Group), Shermanian (457.3 - 449.6 Ma)

• "Sherman Fall limestone" (Flower, 1952). The Sherman Fall ls. belongs to the Trenton group and is Shermanian in age (informations are from Melchin & Legault, 1985, Palynology 9; and from Aravena et al., 1995, J. Hydrol. 173(1-4)). Additionally, the Sherman Fall ls. is sometimes equalized with the Verulam Fm. (Simcoe gp.) and there is also a Sherman Fall mbr. comprising the lower part of the Lindsay Fm. (Simcoe gp.), the latter being stratigraphically slightly younger that the Verulam (survey of various websites and online publications, TL)

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Preservation: cast

Primary reference: A. E. Wilson. 1946. Echinodermata of the Ottawa Formation of the Ottawa-St. Lawrence lowland. Geological Survey of Canada Bulletin 4:1-61 [G. Webster/G. Webster]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 197144: authorized by Pete Wagner, entered by Pete Wagner on 23.10.2018

Creative Commons license: CC BY (attribution)