U.S. Geological Survey Professional Paper, Ausgabe 1128

Actinocythereis ashermani Ulrich Atlantic Coastal Plain CALIFORNIA/RIVERSIDE The University Calvert Formation calvertensis carinae Chesapeake Group Choptank Formation clarkana Ulrich Cythere Cythereis Cytheretta Cytheridea Cytherideis ashermani Cytheropteron Cytherura dorsal evax evax Ulrich exanthemata Ulrich female left valve figs figure Formation at Plum fossae Genus Hazel Holocene holotype illustrated by Ulrich juvenile Lateral view lectotype pl left valve Ulrich martini Ulrich Marys Formation McLean Measurements.-The lectotype Microcytherura micula Ulrich middle Miocene Miocene morphologic Muellerina lienenklausi Murrayina martini occurs ostracode ostracode species Otikocythere punctistriata Paracytheridea paralectotype planibasalis Ulrich Plate Pliocene Plum Point locality posterior Pterygocythereis punctae punctistriata Ulrich Puri range.-Lower to middle reticulum right valve RIVERSIDE The University rugipunctata Ulrich sediments Shattuckocythere Stratigraphic range.-Lower subovata Ulrich Swain syntype syntype suite Trachyleberis U.S. Geological Survey Ulrich and Bassler University Library UNIVERSITY UNIVERSITY OF CALIFORNIA UNIVERSITY OF CALIFORNIA/RIVERSIDE upper Miocene USNM valve outline Virginia Yorktown Formation yorktownensis Malkin µm in height µm in length