A new hydrozoan from the Pennsylvanian of Illinois / [by] Matthew H. Nitecki -- and Eugene S. Richardson, Jr. --

v.30:no.1(1972)

Pennsylvanian invertebrates of the Mazon Creek area, Illinois: the Essex fauna and medusae / Ralph Gordon Johnson -- and Eugene S. Richardson, Jr. --

v.12:no.7(1968)

Pennsylvanian invertebrates of the Mazon Creek area, Illinois / Eugene S. Richardson, Jr. --

v.12:no.3(1956)

Note on an Eocene crab, Harpactocarcinus mississippiensis Rathbun / Eugene S. Richardson, Jr. --

v.10:no.20(1954)

New agnathous fishes from the Pennsylvanian of Illinois / David Bardack -- and Eugene S. Richardson, Jr. --

v.33:no.26(1977)

Pennsylvanian invertebrates of the Mazon Creek Area, Illinois: the morphology and affinities of Tullimonstrum / Ralph Gordon Johnson -- and Eugene S. Richardson, Jr. --

v.12:no.8(1969)

Time factors of differentially preserved wood in two calcitic concretions in Pennsylvanian black shale from Indiana / Bertram G. Woodland -- and Catherine K. Richardson --.

v.33:no.10(1975)

Catalog of type specimens of conodonts in the Field Museum of Natural History / [by] Matthew H. Nitecki -- and Eugene S. Richardson, Jr. --.

v.17:no.1(1967)

Introduction and index to Fieldiana: Geology volume 33 / Eugene S. Richardson, Jr. -- William D. Turnbull --.

v.33:no.31(1981)

Wrightia.

v.1 (1945-1951)

Wrightia.

v.2 (1959-1963)

Wrightia.

v.3 (1961-1966)

Wrightia.

v.4 (1968-1971)