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  1. Late Palaeozoic species of Ellisonia (Conodontophorida) : evolutionary and palaeoecological significance /
    By: Von Bitter, Peter H. - Merrill, Glen K. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1983.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Conodonts  Ellisonia  Paleontology  Paleozoic  
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