Classification of the genus Angustothyris
G. †Angustothyris Dagys 1972
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†Angustothyris angustaeformis Boekh 1872
†Angustothyris concava Jin et al. 1979
†Angustothyris dagysi Guo et al. 2019
†Angustothyris ladina Bittner 1890
†Angustothyris qingyanensis Guo et al. 2019
†Angustothyris raxana Bittner 1892