phanerozoicadj.¹

Brit.

/ˌfan(ə)rəˈzəʊɪk/, U.S.

/ˌfæn(ə)rəˈzoʊɪk/

Etymology: < phanero- comb. form + -zoic comb. form². Compare earlier cryptozoic adj.²

Zoology. Now rare.

Designating animals living in exposed conditions above the surface of the ground; of or relating to such animals. Opposed to cryptozoic adj.²

ΘΚΠ

the world > animals > by habitat > [adjective] > terrestrial > above the ground

phanerozoic1896

1896 A. Dendy in Nat. Sci. July 8 Cryptozoic fauna imperceptibly blends with what by way of contrast may be called the ‘phanerozoic’.

1911 A. Willey Convergence in Evol. iii. 23 Phanerozoic or diurnal animals are positively heliotropic.

1922 F. W. Flattely & C. L. Walton Biol. Sea-Shore i. 7 We thus have two great sub-realms: the phanerozoic and the cryptozoic.

This entry has not yet been fully updated (first published 1982; most recently modified version published online March 2022).

Phanerozoicadj.²n.

Brit.

/ˌfan(ə)rəˈzəʊɪk/, U.S.

/ˌfæn(ə)rəˈzoʊɪk/

Origin: Formed within English, by compounding. Etymons: phanero- comb. form, -zoic comb. form¹.

Etymology: < phanero- comb. form + -zoic comb. form¹.

Geology.

A. adj.²

Of, relating to, or designating the eon covering the whole of geological time since the beginning of the Cambrian period (from about 570 million years ago) and comprising the Palaeozoic, Mesozoic, and Cenozoic eras, which are characterized by a wealth of fossils, as contrasted with the Precambrian (Cryptozoic).

ΘΚΠ

the world > the earth > structure of the earth > age or period > [adjective] > primary or Palaeozoic

primal1858

Phanerozoic1930

the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Cambrian

Phanerozoic1930

1930 G. H. Chadwick in Bull. Geol. Soc. Amer. 41 48 The following classificatory scheme is offered for criticism... Phanerozoic or Phanerobiotic... Cryptozoic or Cryptobiotic (Precambrian).

1958 R. C. Moore Introd. Hist. Geol. (ed. 2) iv. 59/2 It is convenient also to designate the Cryptozoic rocks as Precambrian, a commonly used term indicating age older than the Cambrian Period, first division of the Paleozoic Era and of the Phanerozoic Eon.

1971 Nature 25 June 498/1 All stratigraphic methods of correlation..that are used for Phanerozoic rocks should be extended as far as possible in the Pre-Cambrian part of the stratigraphic column.

1990 C. Pellant Rocks, Minerals & Fossils 101/1 Our knowledge of evolution is thus more detailed for the Phanerozoic part of the time scale (Cambrian to Recent) than for the Pre-Cambrian.

2000 Nature 7 Dec. 651/1 The relationship between changes in atmospheric concentrations of CO₂ and climate swings from ‘icehouse’..to ‘greenhouse’..conditions over the Phanerozoic eon—the past 544 million years of Earth's history.

B. n.

The Phanerozoic eon; the system of rocks dating from this time.

ΚΠ

1960 Compass of Sigma Gamma Epsilon 37 123 The stratigraphic column of North Dakota includes about 15,000 ft. of sedimentary rocks, with every system of the Phanerozoic being represented.

1977 A. Hallam Planet Earth 189 The later Proterozoic Grenville belt of southern Canada..is a linear belt with more similarities to the younger mountain belts of the Phanerozoic.

1991 Sci. Amer. May 54/2 The Phanerozoic is the fifth and latest supracrustal era of ore deposition.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	phanerozoic
释义	phanerozoicadj.¹ Brit. /ˌfan(ə)rəˈzəʊɪk/, U.S. /ˌfæn(ə)rəˈzoʊɪk/ Etymology: < phanero- comb. form + -zoic comb. form². Compare earlier cryptozoic adj.² Zoology. Now rare. Designating animals living in exposed conditions above the surface of the ground; of or relating to such animals. Opposed to cryptozoic adj.² ΘΚΠ the world > animals > by habitat > [adjective] > terrestrial > above the ground phanerozoic1896 1896 A. Dendy in Nat. Sci. July 8 Cryptozoic fauna imperceptibly blends with what by way of contrast may be called the ‘phanerozoic’. 1911 A. Willey Convergence in Evol. iii. 23 Phanerozoic or diurnal animals are positively heliotropic. 1922 F. W. Flattely & C. L. Walton Biol. Sea-Shore i. 7 We thus have two great sub-realms: the phanerozoic and the cryptozoic. This entry has not yet been fully updated (first published 1982; most recently modified version published online March 2022). Phanerozoicadj.²n. Brit. /ˌfan(ə)rəˈzəʊɪk/, U.S. /ˌfæn(ə)rəˈzoʊɪk/ Origin: Formed within English, by compounding. Etymons: phanero- comb. form, -zoic comb. form¹. Etymology: < phanero- comb. form + -zoic comb. form¹. Geology. A. adj.² Of, relating to, or designating the eon covering the whole of geological time since the beginning of the Cambrian period (from about 570 million years ago) and comprising the Palaeozoic, Mesozoic, and Cenozoic eras, which are characterized by a wealth of fossils, as contrasted with the Precambrian (Cryptozoic). ΘΚΠ the world > the earth > structure of the earth > age or period > [adjective] > primary or Palaeozoic primal1858 Phanerozoic1930 the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Cambrian Phanerozoic1930 1930 G. H. Chadwick in Bull. Geol. Soc. Amer. 41 48 The following classificatory scheme is offered for criticism... Phanerozoic or Phanerobiotic... Cryptozoic or Cryptobiotic (Precambrian). 1958 R. C. Moore Introd. Hist. Geol. (ed. 2) iv. 59/2 It is convenient also to designate the Cryptozoic rocks as Precambrian, a commonly used term indicating age older than the Cambrian Period, first division of the Paleozoic Era and of the Phanerozoic Eon. 1971 Nature 25 June 498/1 All stratigraphic methods of correlation..that are used for Phanerozoic rocks should be extended as far as possible in the Pre-Cambrian part of the stratigraphic column. 1990 C. Pellant Rocks, Minerals & Fossils 101/1 Our knowledge of evolution is thus more detailed for the Phanerozoic part of the time scale (Cambrian to Recent) than for the Pre-Cambrian. 2000 Nature 7 Dec. 651/1 The relationship between changes in atmospheric concentrations of CO₂ and climate swings from ‘icehouse’..to ‘greenhouse’..conditions over the Phanerozoic eon—the past 544 million years of Earth's history. B. n. The Phanerozoic eon; the system of rocks dating from this time. ΚΠ 1960 Compass of Sigma Gamma Epsilon 37 123 The stratigraphic column of North Dakota includes about 15,000 ft. of sedimentary rocks, with every system of the Phanerozoic being represented. 1977 A. Hallam Planet Earth 189 The later Proterozoic Grenville belt of southern Canada..is a linear belt with more similarities to the younger mountain belts of the Phanerozoic. 1991 Sci. Amer. May 54/2 The Phanerozoic is the fifth and latest supracrustal era of ore deposition. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < adj.¹1896adj.²n.1930
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phanerozoicadj.1

Phanerozoicadj.2n.

phanerozoicadj.¹

Phanerozoicadj.²n.