Rząd Tarphyceratida Flower, 1950
Opis Exogastrically coiled shell with elongated body chamber, cylindrical narrow siphuncle with relatively thick connecting rings,and large protoconch. Synonimy Zasięg czasowy tremadok – wenlok Literatura Dzik, J. 1984. Phylogeny of the Nautiloidea. Palaeontologia Polonica 45, 1-255 |
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