CEPHALOPODS AND PALEOENVIRONMENTS OF THE FORT CASSIN FORMATION (UPPER LOWER ORDOVICIAN), EASTERN NEW YORK AND ADJACENT VERMONT

The Oldest Cephalopods from East Laurentia

Onset of the Ordovician cephalopod radiation – evidence from the Rochdale Formation (middle Early Ordovician, Stairsian) in eastern New York

EARLY ORTHOCERATOID CEPHALOPODS FROM THE ARGENTINE PRECORDILLERA (LOWER–MIDDLE ORDOVICIAN)

THE EARLIEST ORDOVICIAN CEPHALOPODS OF EASTERN LAURENTIA— ELLESMEROCERIDS OF THE TRIBES HILL FORMATION, EASTERN NEW YORK

CARBONIFEROUS ACTINOCERATOID NAUTILOIDEA (CEPHALOPODA)— A NEW PERSPECTIVE

Adaptive evolution in Paleozoic coiled cephalopods