palaechinoidn.adj.

Brit.

/palᵻˈkʌɪnɔɪd/,

/peɪlᵻˈkʌɪnɔɪd/,

/palˈɛkᵻnɔɪd/,

/peɪlˈɛkᵻnɔɪd/, U.S.

/peɪlˈɛkəˌnɔɪd/,

/pælˈɛkəˌnɔɪd/,

/peɪliˈkaɪˌnɔɪd/,

/pæliˈkaɪˌnɔɪd/

Forms: 1800s palechinoid, 1800s– palaechinoid, 1800s– palaeechinoid.

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

Etymology: < scientific Latin Palaechinoidea, subclass name (given as a synonym of the subclass name Palechinida in Haeckel Gen. Morphol. der Organismen (1866) II. p. lxxi) < palaeo- palaeo- comb. form + Echinoidea , class name (see echinoid adj. and n.), with coalescence of the vowels. With later use compare scientific Latin Palechinus, Palaechinus, Palaeechinus, genus name (see note).The name Palechinus was reported in Jrnl. Geol. Soc. Dublin (1840) 2 99 as having been coined by J. Scouler, but its taxonomic validity as a genus name derives from its publication in F. M'Coy Synopsis of Characters of Carboniferous Limestone Fossils of Ireland (1844) 171, where it appears in the text as Palæchinus (though the accompanying plate caption reads Palechinus). By the rules of zoological nomenclature, this is now spelt Palaechinus. The form Palæechinus (or Palaeechinus), attributed to Lovén (1874), was preferred by some authors on philological grounds, but being a later emendation it is not taxonomically valid. N.E.D. (1904) gives only the pronunciation (pælikəi·noid) /pæliːˈkaɪnɔɪd/.

Palaeontology.

A. n.

Originally: an extinct echinoid (sea urchin) belonging to the former subclass Palaechinoidea, comprising all or most Palaeozoic echinoids, typically having more than two series of interambulacral plates. Now usually: a member of a more restricted group of Palaeozoic echinoids (sometimes classified as an order Palaechinoida) including the genus Palaechinus (see quot. 1993).

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > subphylum Eleutherozoa > class Echinoidea > fossil > member of division Palaechnoidea

palaechinoid1863

1863 J. D. Dana Man. Geol. iii. ii. 400 (table) Palæechinoids (including Archæocidaris).

1889 H. A. Nicholson & R. Lydekker Man. Palæontol. (ed. 3) I. 373 In all the Palechinoids there is a large peristomial aperture.

1935 T. Mortensen Monogr. Echinoidea II. 3 The very generally accepted division of the Echinoids into two great groups: the Palæechinoids and the Euechinoids is rejected.

1984 A. Smith Echinoid Palaeobiol. iii. 30 Only palaechinoids evolved tesselate plating.

1993 E. N. K. Clarkson Invertebr. Palaeontol. & Evol. (ed. 3) ix. 261/2 This [sc. subclass Perischoechinoidea] is a difficult group to classify: it includes five groups: (a) lepidocentrids..; (b) echinocystidids..; (c) lepidesthids..; (d) proterocidarids..; (e) palaechinoids with polygonal ambulacral plates with small secondary tubercles (Palaechinus, Melonites).

B. adj.

Belonging to the taxon Palaechinoidea. rare.Apparently only attested in dictionaries or glossaries.

ΚΠ

1904 N.E.D. Palæchinoid, pale-,..belonging to the extinct division (Palæchinoidea) of Sea-urchins (Echinoidea), whose fossil remains are found in palæozoic rocks.

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

单词	palaechinoid
释义	palaechinoidn.adj. Brit. /palᵻˈkʌɪnɔɪd/, /peɪlᵻˈkʌɪnɔɪd/, /palˈɛkᵻnɔɪd/, /peɪlˈɛkᵻnɔɪd/, U.S. /peɪlˈɛkəˌnɔɪd/, /pælˈɛkəˌnɔɪd/, /peɪliˈkaɪˌnɔɪd/, /pæliˈkaɪˌnɔɪd/ Forms: 1800s palechinoid, 1800s– palaechinoid, 1800s– palaeechinoid. Origin: A borrowing from Latin. Etymon: Latin Palaechinoidea. Etymology: < scientific Latin Palaechinoidea, subclass name (given as a synonym of the subclass name Palechinida in Haeckel Gen. Morphol. der Organismen (1866) II. p. lxxi) < palaeo- palaeo- comb. form + Echinoidea , class name (see echinoid adj. and n.), with coalescence of the vowels. With later use compare scientific Latin Palechinus, Palaechinus, Palaeechinus, genus name (see note).The name Palechinus was reported in Jrnl. Geol. Soc. Dublin (1840) 2 99 as having been coined by J. Scouler, but its taxonomic validity as a genus name derives from its publication in F. M'Coy Synopsis of Characters of Carboniferous Limestone Fossils of Ireland (1844) 171, where it appears in the text as Palæchinus (though the accompanying plate caption reads Palechinus). By the rules of zoological nomenclature, this is now spelt Palaechinus. The form Palæechinus (or Palaeechinus), attributed to Lovén (1874), was preferred by some authors on philological grounds, but being a later emendation it is not taxonomically valid. N.E.D. (1904) gives only the pronunciation (pælikəi·noid) /pæliːˈkaɪnɔɪd/. Palaeontology. A. n. Originally: an extinct echinoid (sea urchin) belonging to the former subclass Palaechinoidea, comprising all or most Palaeozoic echinoids, typically having more than two series of interambulacral plates. Now usually: a member of a more restricted group of Palaeozoic echinoids (sometimes classified as an order Palaechinoida) including the genus Palaechinus (see quot. 1993). ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > subphylum Eleutherozoa > class Echinoidea > fossil > member of division Palaechnoidea palaechinoid1863 1863 J. D. Dana Man. Geol. iii. ii. 400 (table) Palæechinoids (including Archæocidaris). 1889 H. A. Nicholson & R. Lydekker Man. Palæontol. (ed. 3) I. 373 In all the Palechinoids there is a large peristomial aperture. 1935 T. Mortensen Monogr. Echinoidea II. 3 The very generally accepted division of the Echinoids into two great groups: the Palæechinoids and the Euechinoids is rejected. 1984 A. Smith Echinoid Palaeobiol. iii. 30 Only palaechinoids evolved tesselate plating. 1993 E. N. K. Clarkson Invertebr. Palaeontol. & Evol. (ed. 3) ix. 261/2 This [sc. subclass Perischoechinoidea] is a difficult group to classify: it includes five groups: (a) lepidocentrids..; (b) echinocystidids..; (c) lepidesthids..; (d) proterocidarids..; (e) palaechinoids with polygonal ambulacral plates with small secondary tubercles (Palaechinus, Melonites). B. adj. Belonging to the taxon Palaechinoidea. rare.Apparently only attested in dictionaries or glossaries. ΚΠ 1904 N.E.D. Palæchinoid, pale-,..belonging to the extinct division (Palæchinoidea) of Sea-urchins (Echinoidea), whose fossil remains are found in palæozoic rocks. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < n.adj.1863
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