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British Columbia · Canada

Haslam Formation outcrops (Vancouver Island, BC)

Open access📚 Compiled from public sources

Late Cretaceous Haslam Formation shales exposed along Vancouver Island streams and shorelines (Trent River, Brannen Lake). Small Cretaceous shark teeth, ammonites, and the occasional mosasaur fragment — Canada's most accessible marine Cretaceous public hunt.

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Geology
FormationsHaslam Formation
EpochsCretaceous
Age~85 million years
Star speciesSqualicorax sp., Cretolamna appendiculata
Technique

Walk the Trent River canyon at low water (late summer). Sift the soft shale lag below recent slumps. Surface collecting only — no rock-hammering protected outcrops.

Access

Trent River day-use park near Royston, BC. Multiple public access points on the island; check BC Parks for current status.

Legality & ethics

British Columbia regulates fossil collection under the Fossil Management Framework. Common surface finds are generally allowed; significant vertebrates must be reported to the Royal BC Museum.

Hazards
  • Slippery shale
  • Stream-current rises after rain
  • Bears and cougars on island streams
Insider tips
  • Late August through October is the best low-water window
  • Pair with a Royal BC Museum (Victoria) reference visit
  • VIPS (Vancouver Island Paleontological Society) runs club hunts — worth joining

Shark teeth findable here

Trophy = headline find · Rare = real score · Uncommon = some trips · Common = most trips.

Also findable here

The beachcomber's bonus round — what else the geology gives up.

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