E. rolandii is known from four fossil leaves found in Middle Eocene deposits of British Columbia, Canada and Mississippi, United States.

E. rolandii is one of five described fossil species from North America assigned to the modern genus Eucommia.

The holotype, specimen UF 11034, is housed in the paleobotanical collections of the Florida Museum of Natural History, and is from Middle Eocene rocks of the Talahatta Formation.

[1] The specimen was recovered from strata exposed in the Bovay Clay pit near Holly Springs, Mississippi.

[1] The specific epithet rolandii was chosen in honor of the American paleobotanist Roland W. Brown who was responsible for the first identification of Eocommia fossils found in North America.