Geology. Of, relating to, or designating the first (lowest) of fifteen subdivisions into which the geologist H. D. Rogers divided the Palaeozoic…
| 单词 | θ5332 |
| 释义 | the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic (57) primal1858 Geology. Of, relating to, or designating the first (lowest) of fifteen subdivisions into which the geologist H. D. Rogers divided the Palaeozoic… primordial1859 Palaeontology and Geology. Of, relating to, or designating an ancient fossil fauna discovered in the mid 19th cent. and the series of strata in… primary1871 Geology. Originally: designating rocks believed to have been formed before the appearance of life on the earth; = primitive, adj. 8. In later use… Subcategories:— Cambrian (1) — Ordovician (9) — Silurian (9) — Devonian (13) — carboniferous (13) — Permo-carboniferous (3) — Permian (6) |
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