Latitudinal range: 45.7° to 49.3°

Found in 6 samples

Canada: Gryde (Maastrichtian)

United States: Lane's Little Jaw Site (Maastrichtian), Muddy Tork (Maastrichtian), Vashus (Maastrichtian), PTRM-V92067 (Maastrichtian), Spigot-Bottle (Maastrichtian)

See also Protolambda florencae, Protolambda hatcheri, Protolambda mcgilli