PalaeozoicPaleozoicadj.n.

Brit.

/ˌpalɪəˈzəʊɪk/,

/ˌpeɪlɪəˈzəʊɪk/, U.S.

/ˈˌpeɪliəˈzoʊɪk/

Forms: see palaeo- comb. form and -zoic comb. form² Also with lower-case initial.

Origin: Formed within English, by compounding. Etymons: palaeo- comb. form, -zoic comb. form².

Etymology: < palaeo- comb. form + -zoic comb. form². Compare Protozoic adj.¹, Mesozoic adj.

Geology.

A. adj.

1. Of, relating to, or designating the earliest of the three geological eras characterized by abundant fossil remains (the first era of the Phanerozoic eon), between about 570 million and 245 million years ago, following the Proterozoic eon and preceding the Mesozoic era, and marked by the diversification of multicellular plants and animals in both aquatic and terrestrial habitats.The Palaeozoic era comprises the Cambrian, Ordovician, Silurian, Devonian, Carboniferous (Mississippian/Pennsylvanian), and Permian periods. It originally extended only to the Silurian, the extension to the Permian being made by J. Phillips (cf. quots. 1840, 1841).

ΚΠ

1838 A. Sedgwick in Q. Jrnl. Geol. Soc. 2 685 Class II or Palæozoic Series. This includes all the groups of formations between Class I [sc. Primary stratified rocks called by Sedgwick Protozoic] and the Old Red Sandstone, and subdivided as follows: 1 Lower Cambrian; 2 Upper Cambrian; 3 Silurian System.

1840 J. Phillips in Penny Cycl. XVII. 154/1 The term Palæozoic may be retained, though it should be found that the application of it ought to be extended so as to include the carboniferous rocks or even the magnesian limestone.

1841 J. Phillips Palæozoic Fossils Devon 160 I have suggested the..proposed titles; Palæozoic Strata: Upper = Magnesian Limestone formation, Carboniferous System; Middle = (Eifel and South Devon); Lower = Transition Strata; Primary Strata.

1856 C. Darwin in Life & Lett. (1887) II. 80 Not a fragment of secondary or palæozoic rock has been found.

1880 S. Haughton Six Lect. Physical Geogr. iii. 78 During the Upper Palæozoic age, extensive land surfaces were in existence.

1922 Science 27 Jan. 85/1 We seem justified in accepting their estimates..that the Mesozoic rocks are tens of millions, the Paleozoic rocks hundreds of millions, and the most ancient pre-Cambrian rocks more than 1,500 millions of years old.

1957 Nature 23 Feb. 413/2 A group of extinct palæozoic molluscs.

1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) ii. 181/2 Mineralized forms of coralline algae first appear in the Lower Paleozoic era.

2. In extended use: belonging to the most ancient or primitive stage or type; extremely old, ancient.

ΘΚΠ

the world > time > relative time > the past > oldness or ancientness > [adjective] > primitive or early

earlyOE

formerc1374

primordiala1398

primec1429

primer1448

primitivea1475

pristinate1531

prisk1533

pristine1534

primordiate1599

primigenial1602

primitial1602

primigenie1615

primigenious1620

primigene1623

primogenious1625

primogeniala1631

primevea1640

primogenian1650

pristinary1652

primeval1653

primevous1656

protogeneous1660

primigenous1677

primo-primitive1678

antediluvian1705

priscal1831

archaic1833

primigenian1847

Palaeozoic1863

priscan1870

aboriginary1993

1863 D. Wilson Prehistoric Ann. Scotl. (ed. 2) I. i. i. 36 How far back man is to be looked for in the palæozoic chronicles of former life.

1864 J. R. Lowell Fireside Trav. 117 Uncle Z. was a good specimen of that palæozoic class, extinct.., or surviving, like the Dodo, in the Botany Bays of Society.

1889 J. Jacobs Fables of Æsop 54 [In] the Jātakas, we..come upon a really Palæozoic stratum of the Bidpai Fables.

1991 D. Simon Homicide (1993) 112 Pomerlau's arrival marked the end of the Baltimore department's Paleozoic era.

2003 Leader-Post (Regina, Sask.) (Nexis) 28 May a10 While covering the recent Nana Mouskouri concert, I reveled in my youth... But the other night at the Agridome, at least among the non-chaperones, I felt positively Palaeozoic.

B. n.

1. A Palaeozoic rock or stratum. Usually in plural.

ΘΚΠ

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

Palaeozoic1855

Rhenan1885

1855 J. Phillips Man. Geol. 106 The hypozoic strata of Scandinavia predominate vastly in comparison of the diminished states and lower palæozoics.

1937 Geogr. Jrnl. 90 57 Preservation has occurred, largely because it is out in the Staddon grit in the former area, and in the metamorphosed Palaeozoics in the latter.

1970 R. J. Small Study of Landforms viii. 266 A particular surface may be exceptionally well preserved in a region of very resistant rocks, like the Palaeozoics of Wales.

1997 Bull. Amer. Assoc. Petroleum Geologists 81 1220 Interesting potential plays exist in the Parkman..and Tensleep formations as well as some deeper Paleozoics.

2. With the. The Palaeozoic era; (also occasionally) the system of rocks dating from this time.

ΚΠ

1865 S. Haughton Man. Geol. vi. 136 He [sc. Dana] proposes to call the lower Palæozoic the Age of the Mollusks.

1928 Bull. Geol. Soc. Amer. 39 795 The dry climates were then of such general distribution as the world had not seen before during the Paleozoic.

1977 A. Hallam Planet Earth 190/2 The Paleozoic, the era of ancient life, lasted roughly 345 million years.

1991 R. Goldring Fossils in Field iv. 77 In the Palaeozoic, many orthocones had a complex siphuncle and careful collecting is required to determine this.

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

单词	palaeozoic
释义	PalaeozoicPaleozoicadj.n. Brit. /ˌpalɪəˈzəʊɪk/, /ˌpeɪlɪəˈzəʊɪk/, U.S. /ˈˌpeɪliəˈzoʊɪk/ Forms: see palaeo- comb. form and -zoic comb. form² Also with lower-case initial. Origin: Formed within English, by compounding. Etymons: palaeo- comb. form, -zoic comb. form². Etymology: < palaeo- comb. form + -zoic comb. form². Compare Protozoic adj.¹, Mesozoic adj. Geology. A. adj. 1. Of, relating to, or designating the earliest of the three geological eras characterized by abundant fossil remains (the first era of the Phanerozoic eon), between about 570 million and 245 million years ago, following the Proterozoic eon and preceding the Mesozoic era, and marked by the diversification of multicellular plants and animals in both aquatic and terrestrial habitats.The Palaeozoic era comprises the Cambrian, Ordovician, Silurian, Devonian, Carboniferous (Mississippian/Pennsylvanian), and Permian periods. It originally extended only to the Silurian, the extension to the Permian being made by J. Phillips (cf. quots. 1840, 1841). ΚΠ 1838 A. Sedgwick in Q. Jrnl. Geol. Soc. 2 685 Class II or Palæozoic Series. This includes all the groups of formations between Class I [sc. Primary stratified rocks called by Sedgwick Protozoic] and the Old Red Sandstone, and subdivided as follows: 1 Lower Cambrian; 2 Upper Cambrian; 3 Silurian System. 1840 J. Phillips in Penny Cycl. XVII. 154/1 The term Palæozoic may be retained, though it should be found that the application of it ought to be extended so as to include the carboniferous rocks or even the magnesian limestone. 1841 J. Phillips Palæozoic Fossils Devon 160 I have suggested the..proposed titles; Palæozoic Strata: Upper = Magnesian Limestone formation, Carboniferous System; Middle = (Eifel and South Devon); Lower = Transition Strata; Primary Strata. 1856 C. Darwin in Life & Lett. (1887) II. 80 Not a fragment of secondary or palæozoic rock has been found. 1880 S. Haughton Six Lect. Physical Geogr. iii. 78 During the Upper Palæozoic age, extensive land surfaces were in existence. 1922 Science 27 Jan. 85/1 We seem justified in accepting their estimates..that the Mesozoic rocks are tens of millions, the Paleozoic rocks hundreds of millions, and the most ancient pre-Cambrian rocks more than 1,500 millions of years old. 1957 Nature 23 Feb. 413/2 A group of extinct palæozoic molluscs. 1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) ii. 181/2 Mineralized forms of coralline algae first appear in the Lower Paleozoic era. 2. In extended use: belonging to the most ancient or primitive stage or type; extremely old, ancient. ΘΚΠ the world > time > relative time > the past > oldness or ancientness > [adjective] > primitive or early earlyOE formerc1374 primordiala1398 primec1429 primer1448 primitivea1475 pristinate1531 prisk1533 pristine1534 primordiate1599 primigenial1602 primitial1602 primigenie1615 primigenious1620 primigene1623 primogenious1625 primogeniala1631 primevea1640 primogenian1650 pristinary1652 primeval1653 primevous1656 protogeneous1660 primigenous1677 primo-primitive1678 antediluvian1705 priscal1831 archaic1833 primigenian1847 Palaeozoic1863 priscan1870 aboriginary1993 1863 D. Wilson Prehistoric Ann. Scotl. (ed. 2) I. i. i. 36 How far back man is to be looked for in the palæozoic chronicles of former life. 1864 J. R. Lowell Fireside Trav. 117 Uncle Z. was a good specimen of that palæozoic class, extinct.., or surviving, like the Dodo, in the Botany Bays of Society. 1889 J. Jacobs Fables of Æsop 54 [In] the Jātakas, we..come upon a really Palæozoic stratum of the Bidpai Fables. 1991 D. Simon Homicide (1993) 112 Pomerlau's arrival marked the end of the Baltimore department's Paleozoic era. 2003 Leader-Post (Regina, Sask.) (Nexis) 28 May a10 While covering the recent Nana Mouskouri concert, I reveled in my youth... But the other night at the Agridome, at least among the non-chaperones, I felt positively Palaeozoic. B. n. 1. A Palaeozoic rock or stratum. Usually in plural. ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > primary or Palaeozoic Palaeozoic1855 Rhenan1885 1855 J. Phillips Man. Geol. 106 The hypozoic strata of Scandinavia predominate vastly in comparison of the diminished states and lower palæozoics. 1937 Geogr. Jrnl. 90 57 Preservation has occurred, largely because it is out in the Staddon grit in the former area, and in the metamorphosed Palaeozoics in the latter. 1970 R. J. Small Study of Landforms viii. 266 A particular surface may be exceptionally well preserved in a region of very resistant rocks, like the Palaeozoics of Wales. 1997 Bull. Amer. Assoc. Petroleum Geologists 81 1220 Interesting potential plays exist in the Parkman..and Tensleep formations as well as some deeper Paleozoics. 2. With the. The Palaeozoic era; (also occasionally) the system of rocks dating from this time. ΚΠ 1865 S. Haughton Man. Geol. vi. 136 He [sc. Dana] proposes to call the lower Palæozoic the Age of the Mollusks. 1928 Bull. Geol. Soc. Amer. 39 795 The dry climates were then of such general distribution as the world had not seen before during the Paleozoic. 1977 A. Hallam Planet Earth 190/2 The Paleozoic, the era of ancient life, lasted roughly 345 million years. 1991 R. Goldring Fossils in Field iv. 77 In the Palaeozoic, many orthocones had a complex siphuncle and careful collecting is required to determine this. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < adj.n.1838
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