Hamilton Group
Euomphalina
Platyceras arkonense
Platyceras bartlettense
Monobathrida
Corocrinus calypso
Megistocrinus abnormis
Megistocrinus depressus
Megistocrinus farnsworthi
Megistocrinus nodosus
Megistocrinus ontario
Megistocrinus regularis
Megistocrinus rugosus
Phacopida
Dipleura dekayi
Spiriferida
Mucrospirifer arkonensis
Mucrospirifer consobrinus
Mucrospirifer cooperi
Mucrospirifer mucronatus
Mucrospirifer profundus
Mucrospirifer prolificus
Mucrospirifer thedfordensis