orthidn.adj.

Brit.

/ˈɔːθɪd/, U.S.

/ˈɔrθɪd/

Origin: A borrowing from Latin. Etymon: Latin Orthidae.

Etymology: < scientific Latin Orthidae, family name (S. P. Woodward Man. Mollusca (1854) ii. 229) < Orthis , genus name (J. W. Dalman 1828, in Konglika Svenska Vetenskaps Academiens handlingar 1827 96; < ancient Greek ὀρθός straight (see ortho- comb. form) + scientific Latin -is : see -id suffix²) + -idae (see -id suffix³). Compare also orthide n. and adj.According to Dalman (see reference above) the genus was so called because of its straight hinge.

Palaeontology.

A. n.

A fossil articulate brachiopod of the genus Orthis, family Orthidae, or order Orthida, of the Palaeozoic era. Cf. orthide n.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Brachiopoda > [noun] > family Orthidae > member of

orthid1861

1861 Rep. Smithsonian Inst. 1860 273 The spirifers and Orthids die out in the lower beds.

1873 J. W. Dawson Story Earth & Man iii. 43 Lamp-shells of another type..the Orthids, these have the valves hinged along a straight line, in the middle of which is a notch for the peduncle.

1940 Amer. Midland Naturalist 23 483 Owen in 1852 published a very brief description and an illustration of a small orthid as Orthis cuneata.

1973 Evolution 27 8/2 Within the articulate Brachiopoda not only the ancestral orthids but each of the five other orders, except perhaps the Strophomenida, appears to have arisen at quite small body size.

1991 Paleobiology 17 62/1 Although found in virtually all environments on the Cambrian shelf.., orthids attained appreciable diversity first in the mid shelf.

B. adj.

Of or relating to the family Orthidae or order Orthida of fossil brachiopods.

ΚΠ

1940 Geogr. Jrnl. 87 430 Above and below occur flaggy limestones, the upper of which yielded numerous fossil fragments, including orthid and other brachiopods.

1967 Geol. Mag. 104 435 (heading) A note on costellae in orthid and strophomenid brachiopods.

1992 Lethaia 25 243 A combination of functional and morphogenetic factors explains the ribbing geometries observed in orthid brachiopods.

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).

单词	orthid
释义	orthidn.adj. Brit. /ˈɔːθɪd/, U.S. /ˈɔrθɪd/ Origin: A borrowing from Latin. Etymon: Latin Orthidae. Etymology: < scientific Latin Orthidae, family name (S. P. Woodward Man. Mollusca (1854) ii. 229) < Orthis , genus name (J. W. Dalman 1828, in Konglika Svenska Vetenskaps Academiens handlingar 1827 96; < ancient Greek ὀρθός straight (see ortho- comb. form) + scientific Latin -is : see -id suffix²) + -idae (see -id suffix³). Compare also orthide n. and adj.According to Dalman (see reference above) the genus was so called because of its straight hinge. Palaeontology. A. n. A fossil articulate brachiopod of the genus Orthis, family Orthidae, or order Orthida, of the Palaeozoic era. Cf. orthide n. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Brachiopoda > [noun] > family Orthidae > member of orthid1861 1861 Rep. Smithsonian Inst. 1860 273 The spirifers and Orthids die out in the lower beds. 1873 J. W. Dawson Story Earth & Man iii. 43 Lamp-shells of another type..the Orthids, these have the valves hinged along a straight line, in the middle of which is a notch for the peduncle. 1940 Amer. Midland Naturalist 23 483 Owen in 1852 published a very brief description and an illustration of a small orthid as Orthis cuneata. 1973 Evolution 27 8/2 Within the articulate Brachiopoda not only the ancestral orthids but each of the five other orders, except perhaps the Strophomenida, appears to have arisen at quite small body size. 1991 Paleobiology 17 62/1 Although found in virtually all environments on the Cambrian shelf.., orthids attained appreciable diversity first in the mid shelf. B. adj. Of or relating to the family Orthidae or order Orthida of fossil brachiopods. ΚΠ 1940 Geogr. Jrnl. 87 430 Above and below occur flaggy limestones, the upper of which yielded numerous fossil fragments, including orthid and other brachiopods. 1967 Geol. Mag. 104 435 (heading) A note on costellae in orthid and strophomenid brachiopods. 1992 Lethaia 25 243 A combination of functional and morphogenetic factors explains the ribbing geometries observed in orthid brachiopods. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < n.adj.1861
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