Section AV1 (98), 0-28.7 m, Avalanche Lake (Silurian of Canada)

Where: Northwest Territories, Canada (62.4° N, 127.1° W: paleocoordinates 9.1° N, 54.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Delorme Group, Llandovery (443.4 - 433.4 Ma)

• STRATIGRAPHIC RELATIONS: Delorme Group, inter-tonguing members of the Whittaker and Road River formations, in tongue 1R (Road River lithology; see Soehn et al., 2000). AGE: Early Silurian, Late Llandovery–Early Wenlock; Cyrtograptus centrifugus-C. insectus Graptolite Zone; Pterospathodus procerus Conodont Superzone; ?Edgecombeaspis belli Trilobite Zone to bottom of Struszia dimitrovi Zone; Loganellia avonia Generalized Vertebrate Zone (GVZ). STRATIGRAPHIC POSITION: From 0-28.7 m.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

• SPECIFIC LITHOLOGY: Not reported in text. LITHIFICATION: Lithified, assumed on the basis of surrounding lithologies.

Size classes: macrofossils, microfossils

Collected by Soehn in 1990

• COLLECTOR: K.L. Soehn, 1990. REPOSITORY: University of Alberta Laboratory for Vertebrate Paleontology (UALVP) of the Departments of Biological Sciences and Earth and Atmospheric Sciences, and in the University of Alberta Paleontology Collections (UAPC) of the Department of Earth and Atmospheric Sciences.

Primary reference: K. L. Soehn, T. Märss, M. W. Caldwell and M. V. H. Wilson. 2001. New and biostratigraphically useful thelodonts from the Silurian of the Mackenzie Mountains, Northwest Territories, Canada. Journal of Vertebrate Paleontology 21(4):651-659 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 90320: authorized by Austin Hendy, entered by Austin Hendy on 16.07.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to taxa described in manuscript, and those characteristic taxa mentioned in text. NOMENCLATURE: Authoritative publication, with modern nomenclature.
Pteraspidomorpha
 Heterostraci -
Heterostraci "indet. 2" Lankester 1868
Agnatha
 Loganelliformes - Loganelliidae
Loganellia sp. Fredholm 1990 jawless fish