|
Porkunioceras tuba
|
|
sp. nov.
|
Kröger, Björn, 2007, Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia, Acta Palaeontologica Polonica 52 (3), pp. 591-608
: 603-604
|
603-604 |
|
Porkunioceras tuba
|
|
sp. nov.
|
Kröger, Björn, 2007, Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia, Acta Palaeontologica Polonica 52 (3), pp. 591-608
: 602-603
|
602-603 |
