Septal arrangement and ontogeny in the porpitid corals Septal arrangement and ontogeny in the porpitid corals
Mississippian corals from New Mexico and a related Pennsylvanian species Mississippian corals from New Mexico and a related Pennsylvanian species
Classification and nomenclature of fossil crinoids based on studies of dissociated parts of their columns Classification and nomenclature of fossil crinoids based on studies of dissociated parts of their columns
Ontogenetic development in Late Pennsylvanian crinoid columnals and pluricolumnals Ontogenetic development in Late Pennsylvanian crinoid columnals and pluricolumnals
Cenozoic Planktonic Foraminiferal Zonation and Characteristics of Index Forms Cenozoic Planktonic Foraminiferal Zonation and Characteristics of Index Forms