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56 Šn/819-sep.
LANDING E.
Clasification and conodon-based age of the Ordovician trilobite Ellsaspis (middle Arenigian, Ville Guay, Quebec) / Landing E., Ludvigsen R. -- :obr. -- In: Canadian Journal of Earth Sciences. -- Vol. 21, No. 12 (1984). -- :s. 1483-1490
Ordovician
paleontologie
trilobite
Ellsaspis
Quebec
Raphiophoridae Angelin
56
64083
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