Montana's Jurassic Park

The panel's young Diplodocus stuck crossing rivers come from a site it never names: the Mother's Day Quarry near Bridger in Carbon County, found on Mother's Day in 1994. It has yielded more than 2,500 fossils from at least fifteen juveniles and subadults, patches of skin, and in 2010 a skull about nine and a half inches long. The published reading differs from the panel's. Drought most likely killed the group, young animals apparently living apart from adults, and a muddy flow after heavy rain buried the carcasses soon after death.

Where it stands

More markers nearby

• The Great Highway of the Northwest: The Yellowstone Trail — steps away
• The Bozeman Trail — steps away
• The Cattle Drive of 1866 — steps away
• The Crazy Mountains — steps away