Classification of the family Metagnostidae
Fm. †Metagnostidae Jaekel 1909
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G. †Arthrorhachis Hawle and Corda 1847
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†Arthrorhachis danica brevis Fortey 1980
†Arthrorhachis elliptifrons Tjernvik 1956
†Arthrorhachis mobergi Tjernvik 1956
†Arthrorhachis tardus Barrande 1846
Invalid names: Girvanagnostus Kobayashi 1939 [synonym]
G. †Chatkalagnostus Khairullina and Abdullaev 1970
G. †Corrugatagnostus Kobayashi 1939
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†Corrugatagnostus convergens Weir 1959
†Corrugatagnostus morea Salter 1864
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Invalid names: Corrugatagnostus perrugatus Barrande 1872 [synonym]
Invalid names: Segmentagnostus Pek 1977 [synonym]
G. †Dividuagnostus Koroleva 1982
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†Dividuagnostus minus Koroleva 1982
†Dividuagnostus tortelloi Waisfeld and Vaccari 2009
G. †Galbagnostus Whittington 1965
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†Galbagnostus galba Billings 1865
†Galbagnostus valmyensis Ross 1958
G. †Geragnostella Kobayashi 1939
G. †Geragnostus Howell 1935
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Subg. †Geragnostus (Geragnostella) Kobayashi 1939
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†Geragnostus (Geragnostella) explanatus Tjernvik 1956
†Geragnostus (Geragnostella) tullbergi Novak 1883
†Geragnostus (Geragnostella) wimani Tjernvik 1956
Subg. †Geragnostus (Geragnostus) Howell 1935
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†Geragnostus (Geragnostus) callaveiformis Harrington and Leanza 1957
†Geragnostus (Geragnostus) maurii Harrington and Leanza 1957
†Geragnostus (Geragnostus) nesossii Harrington and Leanza 1957
Subg. †Geragnostus (Microagnostus) Howell 1935
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†Geragnostus (Microagnostus) callaveiformis Harrington and Leanza 1957
†Geragnostus (Microagnostus) calviformis Harrington and Leanza 1957
†Geragnostus (Microagnostus) hoeki Kobayashi 1939
†Geragnostus (Microagnostus) micropeltis Harrington and Leanza 1957
†Geragnostus (Microagnostus) neumanni Harrington and Leanza 1957
†Geragnostus (Microagnostus) tilcuyensis Kobayashi 1937
†Geragnostus (Microagnostus) vilonii Harrington and Leanza 1957
Subg. †Geragnostus (Novoagnostus) Nielsen 1997
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†Geragnostus (Novoagnostus) contractus Zhou et al. 2014
†Geragnostus (Novoagnostus) longicollis Raymond 1925
†Geragnostus boutouryensis Howell 1935
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Invalid names: Geragnostus foulonensis Howell 1935 [synonym], Geragnostus languidus Howell 1935 [synonym], Geragnostus manifestus Howell 1935 [synonym]
†Geragnostus callaveiformis Harrington and Leanza 1957
†Geragnostus crassus Tjernvik 1956
†Geragnostus fabius Billings 1865
†Geragnostus occitanus Howell 1935
Invalid names: Neptunagnostella Pek 1977 [synonym]
G. †Granuloagnostus Pek 1970
G. †Homagnostoides Kobayashi 1939
G. †Trinodus M'Coy 1846
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†Trinodus agnostiformis McCoy 1846
†Trinodus clusus Whittington 1963
†Trinodus cylindricus Chen in Li 1975
†Trinodus elspethi Raymond 1925
†Trinodus jujuyensis Harrington 1938
†Trinodus saltaensis Harrington and Leanza 1957
†Trinodus tardus Barrande 1846
Invalid names: Arthrorhachidae Raymond 1913 [synonym], Geragnostidae Howell 1935 [synonym], Trinodidae Howell 1935 [synonym]