S10-10-87-CNA-KPB-10, Sandilands Fm., Graham Island, Queen Charlotte Islands (Jurassic of Canada)

Where: British Columbia, Canada (53.9° N, 133.2° W: paleocoordinates 0.8° S, 128.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Sandilands Formation (Kunga Group), Late/Upper Hettangian (201.3 - 196.5 Ma)

• sample from 45.2 m above base of section

• bed-level stratigraphic resolution

Environment/lithology: basinal (); siltstone and concretionary limestone

• The Sandilands Formation at Section 10 is sandy in the lower part but higher up is composed mostly of laminated siltstone with minor shale and sandstone and abundant limestone lenses and concretions.

Size class: microfossils

Primary reference: E. S. Carter, P. A. Whalen, and J. Guex. 1998. Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin (496)1-162 [A. Miller/K. Layou/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 34140: authorized by Arnold Miller, entered by Karen Layou on 20.08.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Radiolaria
 Nassellaria - Eucyrtidiidae
"Protokatroma "sp. A"" = Pseudoeucyrtis, Pseudoeucyrtis angusta
"Protokatroma "sp. A"" = Pseudoeucyrtis Pessagno 1977 radiolarian
Pseudoeucyrtis angusta Carter et al. 1998 radiolarian
 Nassellaria -
Trexus dodgensis Carter et al. 1998 radiolarian
 Nassellaria - Ultranaporidae
Bipedis helenae Carter et al. 1998 radiolarian
 Nassellaria - Parvicingulidae
Nitrader montegufonensis Cordey and Carter 1996 radiolarian
Canoptum columbiaense Carter et al. 1998 radiolarian
Canoptum unicum Pessagno and Whalen 1982 radiolarian
 Entactinaria - Eptingiidae
Charlottea weedensis Carter et al. 1998 radiolarian
 Entactinaria - Heptacladidae
"Pseudoheptacladus "sp. A"" = Parentactinosphaera
"Pseudoheptacladus "sp. A"" = Parentactinosphaera Kozur and Mostler 1979 radiolarian
 Spumellaria - Angulobracchiidae
Thurstonia minutaglobus Carter et al. 1998 radiolarian
 Spumellaria - Hagiastridae
Crucella hettangica Kozur and Mostler 1990 radiolarian
Archaeohagiastrum aff. pobi Carter et al. 1998 radiolarian
.
Udalia dennisoni Carter et al. 1998 radiolarian
Udalia plana Carter et al. 1998 radiolarian
Udalia parvacapsa Carter et al. 1998 radiolarian
 Spumellaria - Xiphostylidae
Archaeocenosphaera laseekensis Pessagno et al. 1989 radiolarian
 Spumellaria - Pantanelliidae
Pantanellium tanuense Pessagno and Blome 1980 radiolarian
Pantanellium browni Pessagno and Blome 1980 radiolarian
Pantanellium freboldi Carter et al. 1998 radiolarian