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†Parahesperornis alexi Martin 1984
urn:lsid:organismnames.com:name:467359
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143
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†Parahesperornis alexi Martin 1984
Martin 1984. A new hesperornithid and the relationships of the Mesozoic birds. Transactions of the Kansas Academy of Science, 87(3-4) 1984: 141-150