【小舌形贝属】
小舌形贝属（学名：Lingulella）是圆货贝科下已灭绝的一个属，生存在寒武纪至泥盆纪的海洋中，属于较早期的腕足动物，行沙底掘穴或附生于伊尔东钵（Eldonia）等浮游生物的方式生活。本属化石广见于世界各地寒武纪至中奥陶世的地层中，如加拿大中寒武世伯吉斯页岩和美国上奥陶统布罗米德群等。
== 特征 ==
这种腕足动物的体型较小，壳瓣双凸状，凸起平缓，呈长卵形、阔卵形或近三角形，壳体薄，由磷酸盐类组成，前缘一般呈宽圆状，朝壳喙方向逐渐缩小，壳喙位于假铰合面边缘。两瓣壳近相等，腹壳稍长且假铰合面高，在假铰合面顶端长有肉茎管。腹壳内可见盾状肌肉瘢痕区，顶肌痕呈心形，中央肌痕则呈小的三角形，后侧肌痕不明。背壳内有时可见一条狭窄的中脊。壳表面有同心状饰纹，内层壳有放散状花纹。
== 物种 ==
*Lingulella agaue Mergl & Kordule, 2008
*Lingulella alabamensis
*Lingulella alata Holmer, 1989
*Lingulella alia
*Lingulella allani Walcott, 1912
*Lingulella amabilis Reed, 1917
*Lingulella angustata
*Lingulella angustior Reed, 1917
*Lingulella antiquissima Jeremejew, 1856
*Lingulella arachne Barrande, 1879
*Lingulella arctica Walcott, 1924
*Lingulella arguta
*Lingulella augusta
*Lingulella afga
*Lingulella bella
*Lingulella bellisculpta Clark, 1935
*Lingulella bohemica Koliha, 1921
*Lingulella borealis
*Lingulella brainerdi
*Lingulella brevis Portlock, 1843
*Lingulella bridgei
*Lingulella bukovensis Koliha, 1924
*Lingulella burnetensis
*Lingulella buttsi
*Lingulella bynguanoensis Roberts, 1990
*Lingulella caelata
*Lingulella carrickensis Reed, 1917
*Lingulella chapa
*澄江小舌形贝 Lingulella chengjiangensis Jin, Hou & Wang, 1993
*Lingulella chinchiaensis Kobayashi, 1933
*Lingulella chinensis
*Lingulella chuarensis
*Lingulella circa Xu & Liu, 1984
*Lingulella clarkei
*Lingulella clivosa Pelman, 1983
*Lingulella clochensis?
*Lingulella columba
*Lingulella concinna
*Lingulella corralensis Rusconi, 1950?
*Lingulella damesi
*Lingulella davisii McCoy, 1851
*Lingulella decorticata
*Lingulella delgadoi
*Lingulella derwentii Postlethwaite, 1897
*Lingulella desiderata
*Lingulella dimorpha
*Lingulella displosa Williams 1974
*Lingulella dotensis Kobayashi, 1934
*Lingulella dusaaulti Patte, 1929
*Lingulella dzhavodiensis Sobolev, 1975
*Lingulella elata Pelman, 1986
*Lingulella ellsi
*Lingulella endopunctata
*Lingulella eucharis Resser, 1939
*Lingulella euglypha
*Lingulella exilis
*Lingulella exortiva
*Lingulella expulsa Barrande, 1879
*Lingulella fenxiangensis Wang, 1978
*Lingulella ferox
*Lingulella ferruginea Salter in Salter & Hicks, 1867
*Lingulella fostermontensis
*Lingulella franklinensis
*Lingulella galba
*Lingulella genei
*Lingulella glypta
*Lingulella grandis
*Lingulella granvillensis
*Lingulella haimantensis
*Lingulella halei
*Lingulella hatai
*Lingulella havliceki Mergl & Slehoferova, 1990
*Lingulella hayaeri
*Lingulella hayesi
*Lingulella hesperia Williams & Curry, 1985
*Lingulella hilli
*Lingulella hinganensis Su, 1980
*Lingulella hitka
*Lingulella howardi Postlethwaite, 1897
*Lingulella hsiensis
*Lingulella humaensis Su, 1980
*Lingulella huronensis
*Lingulella ibicus
*Lingulella idahoensis Resser, 1938
*Lingulella iddingsi
*Lingulella ino
*Lingulella insons Barr.
*Lingulella intermedia Liu, Zhu & Xue, 1985
*Lingulella irene
*Lingulella iris
*Lingulella jakutensis
*Lingulella jerseyensis
*Lingulella kalpinensis Zhang, 1981
*Lingulella kanabensis Resser, 1945
*Lingulella kanlingensis Zhang, 1981
*Lingulella kayseri Sun, 1923
*Lingulella kiddoi
*Lingulella kingstonensis
*Lingulella kitatiensis Aksarina, 1978
*Lingulella lasherensis Rusconi, 1951
*Lingulella lata Koliha, 1924
*Lingulella lepis Salter, 1866
*Lingulella libecovensis Koliha, 1918
*Lingulella lineolata
*Lingulella linguata Pelman, 1977
*Lingulella lirata
*Lingulella lithuanica Korkutis, 1971
*Lingulella liui
*Lingulella lochmanae
*Lingulella longa
*Lingulella longula
*Lingulella major Teixeira, Ribeiro & Silva, 1964
*Lingulella manchuriensis
*Lingulella mania
*Lingulella manticula
*Lingulella marcia Walcott, 1911
*Lingulella martillensis Rusconi, 1952
*Lingulella matthewi Koliha, 1921
*Lingulella mcconnelli Walcott, 1889
*Lingulella mechos/nechos
*Lingulella mehaeigueni Legrand, 1974
*Lingulella miltoni
*Lingulella minus
*Lingulella minuscula Sobolev, 1975
*Lingulella modesta Lochman, 1940
*Lingulella montana Fenton & Fenton, 1936
*Lingulella monticola
*Lingulella moosensisChapman, 1929
*Lingulella narrawayi
*Lingulella nepos
*Lingulella nerva
*Lingulella nicholsoni Callaway, 1877
*Lingulella nina
*Lingulella nicholsoni Callaway, 1877
*Lingulella paliformis
*Lingulella parvula
*Lingulella pela densis Rusconi, 1951
*Lingulella pennsylvanica
*Lingulella perattenuata
*Lingulella petalon Davidson, 1868
*Lingulella pingchouensis
*Lingulella pingchouensis
*Lingulella proveedorensis Cooper, 1952/1954
*Lingulella putilla
*Lingulella quadrilateralis
*Lingulella quaestor Reed, 1917
*Lingulella raymondi Clark, 1924
*Lingulella remius/remus
*Lingulella reticulata
*Lingulella rideauensis
*Lingulella rotunda Pelman, 1977
*Lingulella rugosilinea
*Lingulella sanfangensis
*Lingulella sculptilis
*Lingulella sequens
*Lingulella shansiensis
*Lingulella siliqua
*Lingulella silurica Yadrenkina, 1986
*Lingulella solitariensis Rusconi, 1950
*Lingulella spicata
*Lingulella spitiensis
*Lingulella stonei
*Lingulella ubdivisa Rusconi, 1950
*Lingulella subfusula Su, 1980
*Lingulella subparallela
*Lingulella sufi Mergl & Slehoferova, 1990
*Lingulella sulcata Barrande, 1879
*Lingulella taijiangensis Huang, Wang, Zhao & Dai, 1994
*Lingulella takayamai
*Lingulella tangshihensias
*Lingulella tarpa
*Lingulella tenuitesta
*Lingulella terranovica Howell, 1943
*Lingulella texana
*Lingulella texana
*Lingulella thems mckeei Resser, 1945
*Lingulella tomkolensis Kobayashi, 1934
*Lingulella tsuchidai
*Lingulella turneri
*Lingulella variabilis Pelman, 1977
*Lingulella variolata
*Lingulella vermontensis
*Lingulella virginiensis
*Lingulella viridis Cobbold, 1921
*Lingulella wanniecki
*Lingulella waptaensis
*Lingulella welleri
*Lingulella wirthi
*Lingulella wongi
*Lingulella yabei
*Lingulella yingtzuensie Kobayashi, 1931
*Lingulella yongchengensis Zeng, 1977
*Lingulella yuechiensis Xu, 1978
*Lingulella zejszneri Bednarczyk, 1960
*Lingulella zetus
*Lingulella zeus
*Lingulella zulupeana Rusconi, 1954
=== 重新分配的物种 ===
以下的物种现时已被置入其他属。
*L. acuminata Walcott, 1908 = Lingulepis acuminata Conrad
*L. acuta Pelman, 1977
*L. acutangula = Lingulepis acutangulus Roemer, 1849
*L. africana Legrand, 1974
== 参考文献 ==
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