Latitudinal range: 45.9° to 49.3°

Found in 4 samples

Canada: Gryde (Maastrichtian)

United States: Muddy Tork (Maastrichtian), Vashus (Maastrichtian), Spigot-Bottle (Maastrichtian)

See also Protolambda, Protolambda florencae, Protolambda mcgilli