Geology. Of, relating to, or designating the first (lowest) of fifteen subdivisions into which the geologist H. D. Rogers divided the Palaeozoic…
| 单词 | θ5408 |
| 释义 | the world > the earth > structure of the earth > age or period > [adjective] > primary or Palaeozoic (25) primal1858 Geology. Of, relating to, or designating the first (lowest) of fifteen subdivisions into which the geologist H. D. Rogers divided the Palaeozoic… Phanerozoic1930 Of, relating to, or designating the eon covering the whole of geological time since the beginning of the Cambrian period (from about 570 million… Subcategories:— Cambrian (2) — Ordovician (3) — Silurian (3) — Devonian (8) — carboniferous (3) — Permo-carboniferous (3) — specific Permian period (1) |
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