G. ARTHUR COOPER 1902–1999

Life association of shell and operculum of Middle Ordovician gastropod Maclurites

A revision of Palaeacmaea (Upper Cambrian) (?Cnidaria)

Devonian Dentalium martini Whitfield, 1882, is not a mollusk but a worm

The Walcott-Rust Quarry; Middle Ordovician trilobite Konservat-Lagerstaetten

Rejection of Carboniferous Quasidentalium Shimansky, 1974, from the phylum Mollusca

Stratigraphically significant Early and Middle Ordovician gastropod occurrences, western and northwestern Canada

Macroscenella (Mollusca) from the Middle Ordovician of Wisconsin; a reinterpretation and reassignment

A Wenlockian (Silurian) gastropod shell and operculum from Siberia

Viriatellina (Dacryoconarida) from the Middle Devonian Ludlowville Formation at Alden, New York

An unusual new bellerophontacean gastropod from the Ordovician (Whiterockian) of Nevada

Some new Paleozoic gastropod opercula (Pennsylvanian, Texas)

Taxonomic revision of Hyolitha from the middle Paleozoic of North America

Recognition of Macluritella (Gastropoda) from the Upper Cambrian of Missouri and Nevada

Redescription of Spirodentalium Walcott (Gastropoda: Late Cambrian) from Wisconsin

A chondrophorine coelenterate from the Borden Formation (Lower Mississippian) of Kentucky

Middle Devonian Styliolina obtusa (Hall) (Incertae sedis) and Styliolina spica (Hall) ("Vermes") from western New York, reconsidered

Operculum of the early Middle Ordovician gastropod Palliseria robusta Wilson

The youngest styliolines and nowakiids (Late Devonian) currently known from New York

A correction to Yochelson and Hlavin (1985)