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56 HVL 300
AHLBERG, Per
Ocular structures in an Ordovician agnostid trilobite / Per Ahlberg. -- Oslo : Institute of Palaeontology, 1988. -- S.115-120, : obr. -- In: Lethaia. -- An international journal of paleontology and stratigraphy, 1988, Vol.21. -- bibl.
Trilobita - Agnostida - Oculagnostus frici - taxonomy - morphology - ocular structures - evolution - Sweden - Bohemia - Ordovician
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59659
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