Cape Grassy, Melville Island plesiosaur (Jurassic of Canada)

Also known as Borealonectes type site

Where: Northwest Territories, Canada (76.2° N, 113.5° W: paleocoordinates 68.4° N, 29.4° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Upper Member (Hiccles Cove Formation), Callovian (166.1 - 163.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; white, carbonaceous sandstone and brown siltstone

• The specimen was located at the base of a white, crossbedded and poorly consolidated sandstone. The surrounding sandstone contains small fragments of coal and streaks of carbonaceous material. A brownish siltstone unit 2.58 m thick separates the sandstone from a yellow limonitic concretionary sandstone below, which is capped by an indurated purplish layer.

Size class: macrofossils

Collected by D. A. Russell and R. G. Day in 21-27 1985; reposited in the NMC

Collection methods: surface (in situ),

Primary reference: D. A. Russell. 1993. Jurassic marine reptiles from Cape Grassy, Melville Island, Arctic Canada. Geological Survey of Canada Bulletin 450:195-201 [R. Benson/R. Benson]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 131230: authorized by Roger Benson, entered by Roger Benson on 21.07.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sauropterygia - Rhomaleosauridae
Borealonectes russelli n. gen. n. sp.
Borealonectes russelli n. gen. n. sp. Sato and Wu 2008 plesiosaur
NMC 40729, anterior half of a skeleton, of which the skull, seven cervical vertebrae and the right forepaddle were collected