象牙貝屬

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**象牙貝屬**（[[學名]]：），又名**角貝屬**，是[[象牙貝科]]下的一個[[屬]]，為[[掘足綱]]動物的代表。其[[化石]]最早可追溯至[[志留紀]]晚期。牠們生存在不同深度及[[溫度]]的[[海洋]]中，在[[海底]]泥砂中行穴居生活，利用[[觸手]]將食物碎屑送入[[口部 (部首)|口]]中。

== 特徵 ==
牠們有著窄小的[[象牙]]形[[圓 (消歧義)|圓]]管狀[[貝殼]]，殼表有線條分明的縱肋。殼體朝尖端彎曲且逐漸變細，殼形會隨著年齡增長而慢慢變直。頭部、頭絲和足由較大的前殼口伸出。

== 物種 ==
=== 現生種===

* ''[[Dentalium aciculum]]'' Gould, 1859
* ''[[Dentalium adenense]]'' Ludbrook, 1954
* ''[[Dentalium agassizi]]'' <small>Pilsbry and Sharp, 1897</small> Stained tuskshell
* ''[[Dentalium americanum]]'' <small>Chenu, 1843</small> American tuskshell
* ''[[Dentalium antillarum]]'' <small>[[阿爾西德·道比尼|D'Orbigny]], 1842</small>
* ''[[Dentalium aprinum]]'' <small>L., 1766</small> 
* ''[[Dentalium bartletti]]'' <small>Henderson, 1920</small>
* ''[[Dentalium calamus]]'' <small>Dall, 1889</small>
* ''[[Dentalium callipeplum]]'' <small>Dall, 1889</small>
* ''[[Dentalium callithrix]]'' <small>Dall, 1889</small>
* ''[[Dentalium carduum]]'' <small>Dall, 1889</small>
* ''[[Dentalium ceratum]]'' <small>(Dall, 1881)</small>
* ''[[Dentalium circumcinctum]]'' <small>Watson, 1879</small>
* ''[[Dentalium dalli]]'' <small>Pilsbry & Sharp, 1897</small>
* ''[[Dentalium dentale]]'' <small>L., 1766</small> European tusk 
* **' Watson, 1879
* *[[Dentalium didymum]]* Watson, 1879
* *[[Dentalium eboreum]]* Conrad, 1846 Ivory tusk 
* **' <small>T W Kirk, 1880</small>
* **' L., 1758 - Elephant tusk 
* *[[Dentalium ensiculus]]* Jeffereys, 1877
* *[[Dentalium entale entale]]* (Linnaeus, 1758)
* *[[Dentalium entale stimpsoni]]* (Henderson, 1920)
* *[[Dentalium entale]]* Linnaeus, 1758
* *[[Dentalium floridense]]* J. B. Henderson, 1920
* *[[Dentalium formosum]]* Adams & Reeve, 1850 Formosan tusk
* **' <small>Dell, 1953</small>
* **' Dall, 1889 Gould tuskshell
* *[[Dentalium inversum]]* Deshayes, 1825
* *[[Dentalium laqueatum]]* A. E. Verrill, 1885 Reticulate tuskshell
* *[[Dentalium liodon]]* Pilsbry & Sharp, 1897
* **' <small>Reeve, 1842</small> Elongate tusk 
* ''[[Dentalium meridionale]]'' <small>Pilsbry & Sharp, 1897</small>
* **' Hutton, 1873
* **' <small>Sharp & Pilsbry, 1897</small> Hexagon tuskshell
* ''[[Dentalium occidentale]]'' <small>Stimpson, 1851</small>
* ''[[Dentalium octangulatum]]'' <small> Donovan, 1804</small> Octagonal tusk 
* ''[[Dentalium ophiodon]]'' <small>Dall, 1881</small>
* ''[[Dentalium perlongum]]'' <small>Dall, 1881</small>
* ''[[Dentalium pilsbryi]]'' <small>Rehder, 1942</small>
* ''[[Dentalium pretiosum]]'' <small>Sowerby, 1860</small> Indian-money tusk 
* ''[[Dentalium rebeccaense]]'' <small>Henderson, 1920</small>
* ''[[Dentalium rectius]]'' <small>Carpenter, 1864</small>
* ''[[Dentalium semistriolatum]]'' <small>Guilding, 1834</small> Half-scratched tusk
* ''[[Dentalium senegalense]]'' <small>Dautzenberg, 1891</small> Senegal tusk 
* ''[[Dentalium sowerbyi]]'' <small>Guilding, 1834</small>
* ''[[Dentalium stenochizum]]'' <small>Pilsbry and Sharp, 1897</small>
* **' Emerson, 1954
* *[[Dentalium taphrium]]* Dall, 1889
* *[[Dentalium texasianum]]* Philippi, 1848
* **' <small>Dell, 1953</small>
* ''[[Dentalium tubulatum]]'' <small>Henderson, 1920</small>
* ''[[Dentalium vallicolens]]'' <small>Raymond, 1904</small> Trench tuskshell
* ''[[Dentalium vernedei]]'' <small>Sowerby, 1860l</small> Vernede's tusk 
* ''[[Dentalium vitreum]]'' <small>[[耶奧格·薩爾斯|Sars]], 1851</small>
* ''[[Dentalium vulgare]]'' <small>da Costa, 1778</small> Common tusk 
* **' Sowerby, 1860 New Zealand tusk

### 化石種

* †*Dentalium akasakensis*  Hayasaka 1925
* †*Dentalium alazanum*  Cooke 1928
* †*Dentalium angsananum*  Martin 1922
* †*Dentalium aratum*  Tate 1887
* †*Dentalium arcotinum*  Forbes 1846
* †*Dentalium atratum*  Tate 1887
* †*Dentalium attenuatum*  Say 1824
* †*Dentalium badense*  Partsch, 1856
* †*Dentalium bifrons*  Tate 1887
* †*Dentalium bocasense*  Olsson 1922
* †*Dentalium caduloide*  Dall 1892
* †*Dentalium cannaliculatum*  Klipstein 1843
* †*Dentalium cossmannianum*  Pilsbry and Sharp 1897
* †*Dentalium danai*  Meyer 1885
* †*Dentalium decoratum*  Münster 1841
* †*Dentalium denotatum*  Ludbrook 1956
* †*Dentalium giganteum*  Sowerby 1846
* †*Dentalium gonatodes*  Martin 1885
* †*Dentalium hamatum*  Forbes 1846
* †*Dentalium hanguense*  Cox 1930
* †*Dentalium hecetaensis*  Rohr et al. 2006
* †*Dentalium inaequale*  Bronn 1831
* †*Dentalium indianum*  Girty 1911
* †*Dentalium junghuhni * Martin 1879
* †*Dentalium klipsteini*  Kittl 1891
* †*Dentalium latisulcatum*  Tate 1899
* †*Dentalium lombardicum*  Kittl 1899
* †*Dentalium mancorens*  Olsson 1930
* †*Dentalium microstria*  Heilprin 1880
* †*Dentalium montense*  Briart and Cornet 1889
* †*Dentalium moreanum*  d'Orbigny 1845
* †*Dentalium neohexagonum*  Sharp and Pilsbry 1897
* †*Dentalium neornatum*  Hayasaka 1925
* †*Dentalium ovale*  Cooke 1928
* †*Dentalium pseudonyma*  Pilsbry and Sharp 1898
* †*Dentalium rimosum*  Bose 1906
* †*Dentalium rugiferum* von Koenen 1885
* †*Dentalium sandbergeri*  Cossmann and Lambert 1884
* †*Dentalium schencki*  Moore 1963
* †*Dentalium sexangulum*  (Gmelin, 1790) 
* †*Dentalium simile*  Münster 1841
* †*Dentalium solidum*  Hutton 1873
* †*Dentalium sorbii * King 1850
* †*Dentalium speyeri*  Geinitz 1852
* †*Dentalium sundkrogensis*  Schnetler 2001
* †*Dentalium tenuistriatum*  Martin 1879
* †*Dentalium tornatissimum*  Tate 1899
* †*Dentalium triquetrum*  Tate 1887
* †*Dentalium yasilum*  Olsson 1930

## 圖片

File: Dentaliidae - Dentalium sexangulum.JPG|上新世的*Dentalium sexangulum*化石
File:Dentalium badense 01.JPG|中新世的*Dentalium badense*化石
File: Mollusca - Dentalium.JPG|上新世的*Dentalium species*化石
File:Dentaliidae - Sowerby.png|*[[Dentalium entale]]*（圖上）及*[[Dentalium vulgare]]*（圖下）
File:Dentalium sp.1 - Plioceno.JPG|於威爾瓦發現的象牙貝化石


## 參考文獻

## 外部連結
* ''Dentalium''  in the Paleobiology Database