20 Mile Creek, Jordon (Silurian of Canada)

Where: Ontario, Canada (43.1° N, 73.4° W: paleocoordinates 25.9° S, 43.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Power Glen Formation (Medina Group), Llandovery (443.4 - 433.4 Ma)

• 2 m above lower contact

• bed-level stratigraphic resolution

Environment/lithology: prodelta; lithified, sandy shale and fine-grained sandstone

• excavated from a sandy shale immediately

•overlying a fine grained sandstone

•lens

Size class: macrofossils

Collected by C.R. Clement & J.D. Eckert

Collection methods: quarrying, mechanical

Primary reference: C. E. Brett. 1978. Description and paleoecology of a new Lower Silurian camerate crinoid. Journal of Paleontology 52:91-103 [G. Webster/G. Webster/V. Syverson]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 75225: authorized by Linda Ivany, entered by Patrick Wall on 27.09.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Euomphalina - Platyceratidae
"Naticonema cf. niagarensis" = Platyostoma niagarensis
"Naticonema cf. niagarensis" = Platyostoma niagarensis Hall 1852 snail
Crinoidea
 Diplobathrida - Dimerocrinitidae