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56 HVL 300
AMSDEN, Thomas W.
The pseudodeltidium in Triplesia and Placotriplesia / Thomas W.Amsden. -- Oslo : Institute of Palaeontology, 1973. -- S.253-274, : obr. -- In: Lethaia. -- An international journal of paleontology and stratigraphy, 1973, Vol.6. -- bibl.
Brachiopoda - Triplesia - Middle Ordovician - Lower Silurian - Placotriplesia
56
59651
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