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56 Šn/955-sep.
LUDVIGSEN, Rolf
Lower Ordovician trilobites of the Oxford Formation, eastern Ontario / Rolf Ludvigsen. -- 12 s. : il. (mapy, tabulky, kresby, fotografie). -- In: Canadian Journal of Earth Sciences/Journal canadien de sciences de la terre. -- Vol. 16, No. 4 (1979). -- s. 859-865
Lower
Ordovician
Lower Ordovocian
Paleontologie
trilobites
Oxford
Formation
Oxford Formation
eastern
Ontario
eastern Ontario
Kanada
Systematic Paleontology
Age
56
64220
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