Pennsylvanian Invertebrates of the Mazon Creek Area, IllinoisEugene Stanley Richardson, Ralph Gordon Johnson · First published 1956 · Latest edition 2018Open the Tome
Pennsylvanian Invertebrates of the Mazon Creek Area, Illinois. InsectsEugene Stanley Richardson · First published 2018Open the Tome
Pennsylvanian Invertebrates of the Mazon Creek Area, Illinois. Trilobitomorpha ArthropleuridaEugene Stanley Richardson, Chicago Natural History Museum · First published 2018Open the Tome
Introduction and index to Fieldiana, geology, volume 33Eugene S. Richardson, Jr. · First published 1981Open the Tome
A Middle Devonian octactinellid sponge from New YorkEugene S. Richardson, Jr. · First published 1950Open the Tome
A new Silurian trilobite Dalmanites oklahomaeEugene S. Richardson, Jr. · First published 1949Open the Tome
Some lower Huronian stromatolites of northern MichiganEugene S. Richardson, Jr. · First published 1949Open the Tome
