Section AV1, 590m, Avalanche Lake (Silurian of Canada)

Also known as AV1-590

Where: Northwest Territories, Canada (62.4° N, 127.1° W: paleocoordinates 6.9° N, 51.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Delorme Formation, Sheinwoodian (433.4 - 430.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified lime mudstone and lithified wackestone

• Benthic Assemblage 5
• thin-bedded lime mudstones to wackestone

Size class: macrofossils

Primary reference: J. K. Rigby and B. D. E. Chatterton. 1999. Silurian (Wenlock) demosponges from the Avalanche Lake area of the Mackenzie Mountains, southwestern District of Mackenzie, Northwest Territories, Canada. Palaeontographica Canadiana 16:1-43 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121384: authorized by Wolfgang Kiessling, entered by Uta Merkel on 02.12.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Demospongea
 Streptosclerophorida - Hindiidae
Hindia sphaeroidalis Duncan 1879 demosponge
 Lithistida - Anthaspidellidae
Archaeoscyphia annulata Rigby 1973 demosponge
Archaeoscyphia scalaria de Freitas 1989 demosponge
Archaeoscyphia rectilinearis de Freitas 1989 demosponge
Archaeoscyphia attenuata de Freitas 1989 demosponge
Archaeoscyphia gislei de Freitas 1989 demosponge
Patellispongia mackenziensis n. sp. Rigby and Chatterton 1999 demosponge
Patellispongia attenuata n. sp. Rigby and Chatterton 1999 demosponge
Patellispongia alternata Rigby and Chatterton 1989 demosponge
 Lithistida - Astylospongiidae
Carpospongia castanea Roemer 1861 demosponge