Pycnaspis splendens, new genus, new species, a new ostracoderm from the upper ordovician of North America.
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| Materialtyp: | Bok |
| Språk: | engelska |
| Utgiven: |
1958
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Liknande verk: Pycnaspis splendens, new genus, new species, a new ostracoderm from the upper ordovician of North America.
- A new Species of Billingsites, an ascoceratid Cephalopod, from the upper ordovician ogontz formation of Michigan.
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- Cyrtina hamiltonensis (Hall) and a new species of this brachiopod genus from New York.
- A new Genus and four new species of fossil Diptera from Montana and Colorado.
- Ristnacrinus, a new Ordovician crinoid from Estonia.
- A new family and genus of ostracod from the Ordovician Bill's Creek shale of Michigan.