Beattie Ledge, Williston Lake (Triassic of Canada)

Where: British Columbia, Canada (56.2° N, 122.6° W: paleocoordinates 24.6° N, 37.8° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Liard Formation, Longobardian (242.0 - 235.0 Ma)

• Upper Ladinian Sutherlandi zone.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; limestone and siliciclastic

• Biostrome.
• Terebratulid grainstone, sandy calcareous siltstone beds, and fine-grained quartz-dominated sandstones.

Size class: macrofossils

Primary reference: J.-P. Zonneveld. 2001. Middle Triassic biostromes from the Liard Formation, British Columbia, Canada: oldest examples from the Mesozoic of NW Pangea. Sedimentary Geology 145(3-4):317-341 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 44369: authorized by David Bottjer, entered by Matthew Clapham on 08.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Echinoidea
 Cidaroida - Miocidaridae
Miocidaris utahensis
Miocidaris utahensis pencil urchin
Crinoidea
 Isocrinida - Isocrinidae
Isocrinus sp.
Isocrinus sp. von Meyer 1836 Sea lily
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
Oysters or oyster-like bivalves
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
ID in thin section only
Cephalopoda
 Ceratitida - Nathorstitidae
Nathorstites sp.
Nathorstites sp. Boehm 1903 ceratite
 Ceratitida - Lobitidae
Lobites sp.
Lobites sp. von Mojsisovics 1875 ceratite
Rhynchonellata
 Terebratulida - Zeilleriidae
Aulacothyroides liardensis
 Spiriferinida - Spiriferinidae
Spiriferina abichi
Spiriferina abichi Oppel 1865
Lingulata
 Lingulida - Discinidae
cf. Orbiculoidea sp.
cf. Orbiculoidea sp. d'Orbigny 1847