| 单词 | guide fossil |
| 释义 | > as lemmasguide fossil guide fossil n. (see quots.). ΘΚΠ the world > life > biology > organism > fossil > [noun] > types of astroite1610 belemnite1646 mussel-stone1660 scallop-stone1668 trochite1676 conchite1677 ophiomorphite1677 pectinite1677 worm-stone1677 musculite1681 serpent-stone1681 sugar-plum1681 glossopetraa1684 ague shell1708 forket1708 mytilite1727 grit1748 phytolithus1761 fairy beads1767 fairy fingers1780 fairy arrow1794 gryphite1794 ram's horn1797 hysterolite1799 tubulite1799 thunder-pick1801 celleporite1808 ceraunite1814 seraph1822 serpulite1828 coprolite1829 subfossil1831 pencil1843 trigonellite1845 buccinite1852 rudist1855 guide fossil1867 witch's cradle1867 coccolith1868 fairy cheeses1869 discolith1871 Portland screw1871 spiniferite1872 cyatholith1875 cryptozoon1883 sabellite1889 palaeospecies1895 homoeomorph1898 rudistid1900 megafossil1932 scolecodont1933 macrofossil1937 hystrichosphere1955 palynomorph1961 acritarch1963 molecular fossil1965 mitrate1967 1867 Q. Jrnl. Geol. Soc. 23 p. xlviii The various divisions..were to be recognized in all countries by special guide-fossils. 1909 Cent. Dict. Suppl. Guide-fossil, a fossil species regarded as specially characteristic of a given geological formation, horizon, or fauna. 1914 Schuchert & Barrell in Amer. Jrnl. Sci. 38 6 In the chronologic correlation of the stratified rocks most dependence is put upon a few species, known as ‘guide fossils’, together with the collateral evidence of associated forms. These guide fossils may be represented by many or few individuals. 1957 C. O. Dunbar & J. Rodgers Princ. Stratigr. xvi. 279/1 A good guide fossil should have relatively wide geographic distribution and limited stratigraphic range. 1961 J. Challinor Dict. Geol. 97/1 Guide fossil, a species (or genus) or fossil useful as a guide to stratigraphical horizon or to the conditions under which the organism lived. < as lemmas |
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