psammodontn.adj.

Brit.

/ˈ(p)samə(ʊ)dɒnt/, U.S.

/ˈ(p)sæməˌdɑnt/

Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: psammo- comb. form, -odont comb. form.

Etymology: < psammo- comb. form + -odont comb. form, after scientific Latin Psammodontidae, family name ( L. G. de Koninck Faune du calcaire carbonifère de la Belgique (1878) I. 38). Compare scientific Latin Psammodus, genus name (L. Agassiz in F. A. von Alberti Beitrag zu einer Monogr. des bunten Sandsteins, Muschelkalks u. Keupers (1834) 90)).

Palaeontology.

A. n.

A shark of the extinct family Psammodontidae, known almost entirely from large, rough-surfaced, pavement teeth found in the early Carboniferous of North America and Europe.

ΚΠ

1883 O. St. John & A. H. Worthen in Geol. Surv. Illinois VII. 201 The teeth..were disposed on distinct rami of the jaws, instead of spanning the jaws from side to side, as is the case with the Psammodonts.

1966 A. S. Romer Vertbr. Paleontol. xxviii. 319/1 Most abundant were the so-called pavement-toothed sharks, including the cochliodont family, perhaps ancestral to chimaeras, petalodonts, psammodonts, and others.

B. adj.

Relating to or characteristic of a psammodont.

ΚΠ

1929 Science 4 Oct. 332/2 The work of sectioning and photographing the teeth is almost complete for the Psammodont and Petalodont families of the Walker Museum collection.

1973 Jrnl. Paleontol. 47 142/2 Knowledge of the Paleozoic holocephalans (until recently called bradyodonts) extended little beyond an array of tooth types—cochlodont, petalodont, psammodont.

Derivatives

† psammodontid n. Obsolete rare = psammodont n. and adj.Apparently only attested in dictionaries or glossaries.

ΚΠ

1895 I. K. Funk et al. Standard Dict. Eng. Lang. II. at Psammo- Psammodontid, n.

This is a new entry (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	psammodont
释义	psammodontn.adj. Brit. /ˈ(p)samə(ʊ)dɒnt/, U.S. /ˈ(p)sæməˌdɑnt/ Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: psammo- comb. form, -odont comb. form. Etymology: < psammo- comb. form + -odont comb. form, after scientific Latin Psammodontidae, family name ( L. G. de Koninck Faune du calcaire carbonifère de la Belgique (1878) I. 38). Compare scientific Latin Psammodus, genus name (L. Agassiz in F. A. von Alberti Beitrag zu einer Monogr. des bunten Sandsteins, Muschelkalks u. Keupers (1834) 90)). Palaeontology. A. n. A shark of the extinct family Psammodontidae, known almost entirely from large, rough-surfaced, pavement teeth found in the early Carboniferous of North America and Europe. ΚΠ 1883 O. St. John & A. H. Worthen in Geol. Surv. Illinois VII. 201 The teeth..were disposed on distinct rami of the jaws, instead of spanning the jaws from side to side, as is the case with the Psammodonts. 1966 A. S. Romer Vertbr. Paleontol. xxviii. 319/1 Most abundant were the so-called pavement-toothed sharks, including the cochliodont family, perhaps ancestral to chimaeras, petalodonts, psammodonts, and others. B. adj. Relating to or characteristic of a psammodont. ΚΠ 1929 Science 4 Oct. 332/2 The work of sectioning and photographing the teeth is almost complete for the Psammodont and Petalodont families of the Walker Museum collection. 1973 Jrnl. Paleontol. 47 142/2 Knowledge of the Paleozoic holocephalans (until recently called bradyodonts) extended little beyond an array of tooth types—cochlodont, petalodont, psammodont. Derivatives † psammodontid n. Obsolete rare = psammodont n. and adj.Apparently only attested in dictionaries or glossaries. ΚΠ 1895 I. K. Funk et al. Standard Dict. Eng. Lang. II. at Psammo- Psammodontid, n. This is a new entry (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.adj.1883
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