Classification of the genus Spondylotreta
G. †Spondylotreta Cooper 1956
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†Spondylotreta concentrica Cooper 1956
†Spondylotreta maior Bednarczyk and Biernat 1978
†Spondylotreta orsaensis Holmer 1989
†Spondylotreta parva Wright 1963
†Spondylotreta parva orientalis Popov 1980