Family

Tetradellidae Swartz, 1936

Images
TUG 1041-3
Glossomorphites digitatus | Glossomorphites digitatus (Krause, 1889)
Volkhov Stage
TUG 1041-4
Glossomorphites digitatus | Glossomorphites digitatus (Krause, 1889)
Volkhov Stage
TUG 1045-17
Hesslandella macroreticulata | Hesslandella macroreticulata (Hessland, 1949)
Middle Ordovician
TUG 1045-18
Hesslandella macroreticulata | Hesslandella macroreticulata (Hessland, 1949)
Middle Ordovician
TUG 1045-19
Vittella sigma | Entomis sigma Krause, 1889
Middle Ordovician
TUG 1045-20
Vittella sigma | Entomis sigma Krause, 1889
Middle Ordovician
TUG 1045-4
Ogmoopsis bocki | Ogmoopsis bocki (Öpik, 1935)
Middle Ordovician
TUG 1045-6
Glossomorphites grandispinosus | Glossomorphites grandispinosus (Hessland, 1949)
Middle Ordovician
TUG 1045-7
Glossomorphites digitatus | Glossomorphites digitatus (Krause, 1892)
Middle Ordovician
TUG 1045-8
Glossomorphites digitatus | Glossomorphites digitatus (Krause, 1892)
Middle Ordovician