Classification of the genus Holonema
G. †Holonema Newberry 1890
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†Holonema arcticum Mark-Kurik 1975
†Holonema farrowi Stevens 1964
†Holonema haiti Denison 1968
†Holonema harmae Mark 1953
†Holonema horrida Cope 1892
†Holonema obrutshevi Mark 1953
†Holonema ornatum Traquair 1908
†Holonema radiatum Obruchev 1932
†Holonema rugosa Claypole 1883
†Holonema westolli Miles 1971