Classification of Lo Valvo et al. 2020
Ph. Hemichordata Bateson 1885 [acorn worm]
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Cl. Pterobranchia Lankester 1877 [pterobranch]
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Subcl. Graptolithina Bronn 1849 [graptolite]
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Or. †Graptoloidea Lapworth 1875
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Subor. †Dichograptina Lapworth 1873
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Fm. †Dichograptidae Lapworth 1873
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Fm. †Didymograptidae Mu 1950
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G. †Baltograptus Maletz 1994
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†Baltograptus deflexus Elles and Wood 1901
†Baltograptus extremus Maletz and Slovacek 2013
†Baltograptus geometricus Törnquist 1901
†Baltograptus vacillans Tullberg 1880
G. †Expansograptus Bouček and Přibyl 1953
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†Expansograptus constrictus Hall 1865
†Expansograptus holmi Törnquist 1901
†Expansograptus pusillus Tullberg 1880
†Expansograptus similis Hall 1865
Fm. †Phyllograptidae Kiessling 2009
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G. †Corymbograptus Obut and Sobolevskaya 1964
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G. †Tetragraptus Salter 1863
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†Tetragraptus reclinatus Elles and Wood 1902
†Tetragraptus serra Brongniart 1828