Brown Hill, Williston Lake (Triassic of Canada)

Where: British Columbia, Canada (56.1° N, 122.9° W: paleocoordinates 24.6° N, 38.0° 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 44368: authorized by David Bottjer, entered by Matthew Clapham on 08.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
ID in thin section only
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Oysters or oyster-like bivalves
Rhynchonellata
 Spiriferinida - Spiriferinidae
Spiriferina abichi Oppel 1865
 Terebratulida - Zeilleriidae
Lingulata
 Lingulida - Discinidae
cf. Orbiculoidea sp. d'Orbigny 1847
Malacostraca
 Decapoda - Chimaerastacidae
Chimaerastacus pacifluvialis Amati et al. 2004 decapod
Crinoidea
 Isocrinida - Isocrinidae
Isocrinus sp. von Meyer 1836 Sea lily
Echinoidea
 Cidaroida - Miocidaridae
Miocidaris utahensis pencil urchin
Ophiuroidea
  -
Ophiuroidea indet. Gray 1840 brittle star