 A fossil infructescence and fruit found in 44 million-year-old strata in Oregon was assigned to "Emmenopterys dilcheri", an extinct species.The next-oldest fossils date to the Late Eocene and include "Canthium" from Australia, "Faramea" from Panama, "Guettarda" from New Caledonia, and "Paleorubiaceophyllum", an extinct genus from the southeastern United States.Fossil Rubiaceae are known from three regions in the Eocene (North America north of Mexico, Mexico-Central America-Caribbean, and Southeast Pacific-Asia).