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Showing results for tags 'narva stage'.
D.N.FossilmanLithuania posted a topic in Fossil IDDear Guys, Today I splited small sandstone erratic, here I saw Asterolepis- like armour plates and found Hyneria tooth crown that is about 9 mm length and preserved with well visible cross section that lets to think it is polyplocadont like. The very similar greenish grey sandstones with red spots and the placoderm Byssacanthus pieces are decribed in the database fossiilid.info as from Narva stage (Middle- Late Eifelian, Middle Devonian) Talking about Eifelian tristichopterids I do not know any bigger forms, I just have heard about Tristichopterus. But judging by the size and the