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Nazarov and Ormiston 1990


Plate I
Silurian Ordovician radiolarians

Fig. 1. Oriundogutta ramificans (Nazarov). Mid Ordovician, Llandeilo, Bestamaksk Suite, Eastern Kazakhstan, Chagan River, x105.

Fig. 2. Cessipylorum apertum (Nazarov). Mid Ordovician, Llandeilo, Bestamaksk Suite, Eastern Kazakhstan, Chagan River, x105.

Fig 3. Proventocitum procerulum (Nazarov). Lower Ordovician, Arenig, Kyzylzharsk Suite, Central Kazakhstan, x100.

Fig. 4. Inanibigutta aksakensis (Nazarov). Mid Ordovician, Llandeilo, Bestamaksk Suite, Eastern Kazakhstan, Chagan River, x100.

Fig. 5. Haplotaeniatum labyrintheum Nazarov et Ormiston, gen. et sp. nov. Lower Silurian, Mid-Upper Llandovery, Sakmarsk Suite, Southern Urals, Sakmara River, Bolshoe Abishevo Village, x90.

Fig. 6. Haplentactinia silurica Nazarov et Ormiston, sp. nov. Lower Silurian, Mid-Upper Llandovery, Sakmarsk Suite, Southern Urals, Sakmara River, Bolshoe Abishevo Village, x90.

Fig. 7. Aciferopylorum admirandum Nazarov et Ormiston, sp. nov. Upper Silurian, Lower Ludlow, Southern Urals, Aktyubinsk region, Tarangul River, x100.

Fig. 8. Haplotaeniatum tegimentum Nazarov et Ormiston, sp. nov. Lower Silurian, Mid-Upper Llandovery, Sakmarsk Suite, Southern Urals, Sakmara River, Bolshoe Abishevo Village, x100.

Fig. 9. Oriundogutta litterula Nazarov et Ormiston, sp. nov. Upper Silurian, Lower Ludlow, Southern Urals, Aktyubinsk region, Tarangul River, x100.