Where: Niagara County, New York (43.2° N, 79.0° W: paleocoordinates 24.0° S, 48.3° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Rumsey Ridge Member (Power Glen Formation), Llandovery (443.4 - 433.4 Ma)
• 3.5 meters up from bottom of the Power Glen
• bed-level stratigraphic resolution
Environment/lithology: prodelta; lithified, lenticular, fine-grained, gray sandstone and gray, green shale
•thickness of 11 m and consists of soft, fissile,
•greenish-gray shales with minor sandstones
•and an upper arenaceous dolostone member. A
•sequence of interbedded shales, siltstones, and
•lenticular, fine-grained, light gray sandstones,
•the Rumsey Ridge Member of Fisher (1954)
•occurs 2.5 to 4.0 m above the base of the
•Power Glen at this locality. The sandstones
•exhibit features suggestive of current deposition
•such as crossbedding and cut-and-fill
•structures.
Size class: macrofossils
Collection methods: quarrying, mechanical,
• repository at Buffalo Museum of Science
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: taxonomic analysis
PaleoDB collection 75224: authorized by Linda Ivany, entered by Patrick Wall on 27.09.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
| Crinoidea | |
|
Ptychocrinus medinensis Sea lily | |
| Lingulata | |
|
Lingula sp. Bruguiére 1797 | |
| Stenolaemata | |
|
? Hallopora sp. Bassler 1911 | |
| Cephalopoda | |
|
Nautiloidea indet. Agassiz 1847 nautiloid | |
| Gastropoda | |
"Naticonema niagarensis" = Platyostoma niagarensis
"Naticonema niagarensis" = Platyostoma niagarensis Hall 1852 snail | |
| Bivalvia | |
|
Ctenodonta sp. Salter 1852 clam | |