【象牙贝属】
Striodentalium
象牙贝属（学名：Dentalium），又名角贝属，是象牙贝科下的一个属，为掘足纲动物的代表。其化石最早可追溯至志留纪晚期。牠们生存在不同深度及温度的海洋中，在海底泥砂中行穴居生活，利用触手将食物碎屑送入口中。
== 特征 ==
牠们有著窄小的长牙形圆管壳，壳表线条分明。壳体上端倾斜的角度很大，会随著年龄增长而慢慢变直。触手从下端开口伸出。
== 物种 ==
=== 现生种===
* Dentalium aciculum Gould, 1859
* Dentalium adenense Ludbrook, 1954
* Dentalium agassizi Pilsbry and Sharp, 1897 Stained tuskshell
* Dentalium americanum Chenu, 1843 American tuskshell
* Dentalium antillarum D'Orbigny, 1842
* Dentalium aprinum L., 1766
* Dentalium bartletti Henderson, 1920
* Dentalium calamus Dall, 1889
* Dentalium callipeplum Dall, 1889
* Dentalium callithrix Dall, 1889
* Dentalium carduum Dall, 1889
* Dentalium ceratum (Dall, 1881)
* Dentalium circumcinctum Watson, 1879
* Dentalium dalli Pilsbry & Sharp, 1897
* Dentalium dentale L., 1766 European tusk
* Dentalium diarrhox Watson, 1879
* Dentalium didymum Watson, 1879
* Dentalium eboreum Conrad, 1846 Ivory tusk
* Dentalium ecostatum T W Kirk, 1880
* Dentalium elephantinum 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
* Dentalium glaucarena Dell, 1953
* Dentalium gouldii Dall, 1889 Gould tuskshell
* Dentalium inversum Deshayes, 1825
* Dentalium laqueatum A. E. Verrill, 1885 Reticulate tuskshell
* Dentalium liodon Pilsbry & Sharp, 1897
* Dentalium longitrorsum Reeve, 1842 Elongate tusk
* Dentalium meridionale Pilsbry & Sharp, 1897
* Dentalium nanum Hutton, 1873
* Dentalium neohexagonum Sharp & Pilsbry, 1897 Hexagon tuskshell
* Dentalium occidentale Stimpson, 1851
* Dentalium octangulatum  Donovan, 1804 Octagonal tusk
* Dentalium ophiodon Dall, 1881
* Dentalium perlongum Dall, 1881
* Dentalium pilsbryi Rehder, 1942
* Dentalium pretiosum Sowerby, 1860 Indian-money tusk
* Dentalium rebeccaense Henderson, 1920
* Dentalium rectius Carpenter, 1864
* Dentalium semistriolatum Guilding, 1834 Half-scratched tusk
* Dentalium senegalense Dautzenberg, 1891 Senegal tusk
* Dentalium sowerbyi Guilding, 1834
* Dentalium stenochizum Pilsbry and Sharp, 1897
* Dentalium suteri Emerson, 1954
* Dentalium taphrium Dall, 1889
* Dentalium texasianum Philippi, 1848
* Dentalium tiwhana Dell, 1953
* Dentalium tubulatum Henderson, 1920
* Dentalium vallicolens Raymond, 1904 Trench tuskshell
* Dentalium vernedei Sowerby, 1860l Vernede's tusk
* Dentalium vitreum Sars, 1851
* Dentalium vulgare da Costa, 1778 Common tusk
* Dentalium zelandicum Sowerby, 1860 New Zealand tusk
=== 化石种===
* †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
== 图片 ==
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（图上）及Dentalium vulgare（图下）
File:Dentalium sp.1 - Plioceno.JPG|于威尔瓦发现的象牙贝化石
== 参考文献 ==
== 外部连结 ==
*  Dentalium in the Paleobiology Database