Pycnaspis splendens, new genus, new species, a new ostracoderm from the upper ordovician of North America.
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| フォーマット: | 図書 |
| 言語: | 英語 |
| 出版事項: |
1958
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類似資料: Pycnaspis splendens, new genus, new species, a new ostracoderm from the upper ordovician of North America.
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