A fossil orthoconic shell of a nautiloid cephalopod mollusc of the Palaeozoic or early Mesozoic eras; spec. a member of the genus Orthoceras…
| 单词 | θ33296 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Cephalopoda > [noun] > order Tetrabranchiata > family Orthoceratidae > genus Orthoceras (3) orthoceras1734 A fossil orthoconic shell of a nautiloid cephalopod mollusc of the Palaeozoic or early Mesozoic eras; spec. a member of the genus Orthoceras… Subcategories:— member of (2) |
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