薄皺貝屬

薄皺貝屬（學名：）是瑞芬貝科薄皺貝亞科下已滅絕的一個屬，生存於中奧陶紀至早石炭紀，生活在海底。

特徵
這類有鉸腕足動物的殼形為半圓狀，有突出耳狀骨，鉸線為直線。腹殼微隆而背殼多扁平，兩瓣殼前緣朝同一角度顯著彎折。殼表花紋為纖細的肋，以及同心狀皺紋。薄皺貝通常將其腹殼朝下躺在海底。整個背殼幾乎完全被沉積物掩蓋住，除了朝上突出的前緣露出沉積物表面。

物種
*Leptaena (Leptaena) Dalman, 1828
*Leptaena (Septomena) Roomusoks, 1989
*Leptaena (Ygdrasilomena) Cocks, 2005
*Leptaena acuticuspidata Amsden, 1958
*Leptaena aequalis Amsden, 1974
*Leptaena alliku Oraspold, 1956
*Leptaena altera Rybnikova, 1966
*Leptaena amelia Havlicek, 1967
*Leptaena analogaeformis Biernat, 1966
*Leptaena arberae Kelly, 1967
*Leptaena argentina Thomas, 1905
*Leptaena borghiana Mergl & Massa, 1992
*Leptaena boyaca Caster, 1939
*Leptaena contermina Cocks, 1968
*Leptaena convexa Weller, 1914
*Leptaena cooperi Easton et al., 1958
*Leptaena croma Havlicek & Storch, 1990
*Leptaena cryptoides Oraspold, 1956
*Leptaena dejecta Baarli, 1995
*Leptaena delicata Amsden, 1949
*Leptaena depressa Sowerby, 1825
*Leptaena electra Havlicek, 1967
*Leptaena gibbosa James, 1874
*Leptaena haverfordensis Bancroft, 1949
*Leptaena holcrofti Bassett, 1974
*Leptaena kentuckiana Pope, 1982
*Leptaena lappa Havlicek & Storch, 1990
*Leptaena lappina Havlicek & Storch, 1990
*Leptaena lemniscata Havlicek, 1967
*Leptaena limbifera Havlicek, 1967
*Leptaena moniquensis Foerste, 1924
*Leptaena nanaformis Zhang & al., 1983
*Leptaena nassichuki Smith, 1980
*Leptaena odeon Havlicek, 1967
*Leptaena oklahomensis Amsden, 1951
*Leptaena orhor Havlicek & Storch, 1990
*Leptaena parvirugata Hoel, 2005
*Leptaena parvissima Ivanovskii & Kulkov, 1974
*Leptaena poulseni Kelly, 1967
*Leptaena praequalis Rozman, 1977
*Leptaena provellerosa Havlicek & Storch, 1990
*Leptaena purpurea Cocks, 1968
*Leptaena quadrata Bancroft, 1949
*Leptaena quadrilatera Logan, 1863
*Leptaena rara Alekseeva & Erlanger, 1983
*Leptaena rhomboidalis Wahlenberg, 1821
*Leptaena richmondensis Foerste, 1909
*Leptaena rugata Lindström, 1861
*Leptaena rugaurita Havlicek, 1967
*Leptaena rugosoides Oraspold, 1956
*Leptaena salopiensis Williams, 1963
*Leptaena semiradiata Sowerby, 1842
*Leptaena sperion Bassett, 1977
*Leptaena valida Bancroft, 1949
*Leptaena vellerosa Havlicek, 1967
*Leptaena ventricosa Williams, 1963
*Leptaena ventricosa Hall, 1857
*Leptaena zeta Lamont, 1947
*Leptaena ziegleri Cocks, 1968
*Leptaenopoma trifidium Marek & Havlíček, 1967
*Orhoria lappa Havlicek & Storch, 1990
*Orhoria lappina Havlicek & Storch, 1990

參考文獻
外部連結

• [http://paleodb.org/cgi-bin/bridge.pl?action=basicTaxonInfo&taxon_no=27544 Leptaena] in the Paleobiology Database

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