小舌形貝屬（學名：）是圓貨貝科下已滅絕的一個屬，生存在寒武紀至泥盆紀的海洋中，屬於較早期的腕足動物，行沙底掘穴或附生於伊爾東缽等浮游生物的方式生活。本屬化石廣見於世界各地寒武紀至中奧陶世的地層中，如加拿大中寒武世伯吉斯頁巖和美國上奧陶統等。Amsden TW Catalogue of Fossils from the Middle and Upper Ordovician of Oklahoma Oklahoma Geological Survey Circular 43 1957Byrnes JG Notes on the Nature and Environmental Significance of the Receptaculitaceae Lethaia Vol 1 pp 368381 1968 特徵 這種腕足動物的體型較小，殼瓣雙凸狀，凸起平緩，呈長卵形、闊卵形或近三角形，殼體薄，由磷酸鹽類組成，前緣一般呈寬圓狀，朝殼喙方向逐漸縮小，殼喙位於假鉸合面邊緣。兩瓣殼近相等，腹殼稍長且假鉸合面高，在假鉸合面頂端長有肉莖管。腹殼內可見盾狀肌肉瘢痕區，頂肌痕呈心形，中央肌痕則呈小的三角形，後側肌痕不明。背殼內有時可見一條狹窄的中脊。殼表面有同心狀飾紋，內層殼有放散狀花紋。 物種 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 澄江小舌形貝 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 mechosnechos Lingulella mehaeigueni Legrand 1974 Lingulella miltoni Lingulella minus Lingulella minuscula Sobolev 1975 Lingulella modesta Lochman 1940 Lingulella montana Fenton Fenton 1936 Lingulella monticola Lingulella moosensis Lingulella morsei Lingulella mosia Lingulella murcia var templetonensis Chapman 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 19521954 Lingulella putilla Lingulella quadrilateralis Lingulella quaestor Reed 1917 Lingulella raymondi Clark 1924 Lingulella remiusremus 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 重新分配的物種 以下的物種現時已被置入其他屬。 L acuminata Walcott 1908 Lingulepis acuminata Conrad L acuta Pelman 1977 L acutangula Lingulepis acutangulus Roemer 1849 L africana Legrand 1974 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