Hesquiat Peninsula, East Section I (Eocene to of Canada)

Also known as GSC 21739

Where: British Columbia, Canada (49.5° N, 126.5° W: paleocoordinates 42.9° N, 110.2° W)

When: Escalante Formation (Carmanah Group), Bartonian to Bartonian (41.3 - 33.9 Ma)

Environment/lithology: marine; brown, gray, calcareous sandstone and conglomerate

• Sandstone, brownish grey, very thickly bedded, calcareous, mostly coarse grained, surface locally honeycombed; calcareous concretions are very rare or absent; includes two or three beds of fine pebble-conglomerate, grey, rich in sandy matrix; pebbles composed of volcanic and intrusive rocks, including granitic pebbles probably derived from the Coast Intrusions; no fossils seen; thickness 60 m (200 ft.) (est.).

•

•Interbedding of lenticular beds 15 cm (6 in. ) to 1. 5 m (5 ft. ) thick of sandstone and conglomerate; sandstone green-grey, coarse grained, gritty, resistant, poorly sorted and rounded (greywacke type); conglomerate, pebble, medium to coarse, dull grey; pebbles consist exclusively of the intrusive and volcanic rocks of the Vancouver Group and the Coast Intrusions; abun- dant arenaceous and gritty matrix between the pebbles; a bed of a coarse pebble to boulder conglomerate 1. 8 to 3 m (6 to 10 ft. ) thick at the base; contact with unit 3 apparently conformable, that with unit 1 is a marked angular discordance.

Size class: macrofossils

Primary reference: J. A. Jeletzky. 1975. Age and depositional environment of the lower part of Escalante Formation, western Vancouver Island, British Columbia . Geological Survey of Canada Paper 75(1C):9-16 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 209751: authorized by Mark Uhen, entered by Mark Uhen on 14.05.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Malacostraca
 Decapoda - Lyreididae
"cf. Eumorphocorystes naselensis" = Carinaranina naselensis
"cf. Eumorphocorystes naselensis" = Carinaranina naselensis Rathbun 1926 crab
Gastropoda
 Sorbeoconcha - Naticidae
Polinices (Polinices) cf. washingtonensis
 Neogastropoda - Nassariidae
Molopophorus effingeri, Molopophorus stephensoni
Molopophorus effingeri Effinger 1938 snail
Molopophorus stephensoni Dickerson 1917 snail
 Neogastropoda - Buccinidae
Siphonalia cf. wheatlandensis
Bivalvia
 Nuculida - Nuculidae
Acila (? Truncacila) sp.
Acila (? Truncacila) sp. Grant and Gale 1931 divaricate nutclam
 Cardiida - Veneridae
"cf. Pachydesma gastonensis" = Tivela (Pachydesma)
"cf. Pachydesma gastonensis" = Tivela (Pachydesma) venus clam
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp.
Dentalium sp. Linnaeus 1758 tusk shell