Skip to main content
  1. Geological Ranges/

Middle Devonian

Athyridida

Athyris cora
Athyris spiriferoides
Athyris vittata randalia

Atrypida

Atrypa reticularis
Pseudoatrypa devoniana
Spinatrypa spinosa

Auloporida

Aulopora annectens

Cardiidia

Grammysia bisulcata

Ctenostomata

Ascodictyon floreale
Ascodictyon stellatum

Glyptocystitida

Lipsanocystis magnus
Lipsanocystis oblatus
Lipsanocystis rugosus
Lipsanocystis traversensis

Lingulida

Barroisella complanata
Barroisella milwaukeensis
Barroisella rectilatera

Monobathrida

Corocrinus calypso
Corocrinus nodosus
Corocrinus pettyesi
Megistocrinus abnormis
Megistocrinus concavus
Megistocrinus depressus
Megistocrinus farnsworthi
Megistocrinus multidecoratus
Megistocrinus novus
Megistocrinus ontario
Megistocrinus regularis
Megistocrinus rugosus
Megistocrinus tuberatus

Nucleocrinida

Nucleocrinus angularis
Nucleocrinus elegans
Nucleocrinus greeni
Nucleocrinus meloniformis
Nucleocrinus venustus
Nucleocrinus verneuili

Oncocerida

Acleistoceras breviposticum
Acleistoceras calvini
Acleistoceras fusiforme
Acleistoceras whitfieldi
Acleistoceras wisconsinense

Phacopida

Dipleura dekayi
Eldredgeops rana

Pholadomyoida

Edmondia fragilis

Spiriferida

Allenella tullius
Ambocoelia umbonata
Mucrospirifer mucronatus

Strophomenida

Arcuaminetes scitulus (Hall, 1857)

Terebratulida

Centronella impressa

Tropidoleptida

Tropidoleptus carinatus