�@�@ •ª—Þƒgƒbƒv

---

�–ƒJƒ“ƒuƒŠƒA‹I�`Œ»‘ã�y–³Š{�ã�j�z�B
�–“î�œ�y–³Š{�ã�j�z�B
�–’W�…�±�A‹D�…�±�AŠC�…�±�A’ê�±�y–³Š{�ã�j�z�B
�–—Ø‚ðŒ‡‚­�y–³Š{�ã�j�z�B
�–éâ‚ðŒ‡‚­�y–³Š{�ã�j�z�B
�–Ž¨�Î‚ðŒ‡‚­�y–³Š{�ã�j�z�B
�–‘Εh‚ðŒ‡‚­(—áŠO‚ ‚è�j�y–³Š{�ã�j�z�B
�–�¬‹›‚Í‘¤�ü‚ðŒ‡‚­�y–³Š{�ã�j�z�B
�–ŠO•@�E‚Í�³’†�ü�ã‚É‚PŒÂ�y–³Š{�ã�j�z�B
�–�ã‚ÉŠpŽ¿Ž•�y–³Š{�ã�j�z�B
�–”X�óéÒ(éÒ”X�j‚Í‘Ì•\‚ÉŠJŒû�y–³Š{�ã�j�z�B
�–�Á‰»ŠÇ‚Í’¼‘–�y–³Š{�ã�j�z�B
�–—‘�¶�E‘ÌŠOŽó�¸�y–³Š{�ã�j�z�B
�–ƒJƒ“ƒuƒŠƒA‹I�`ŽO�ô‹I�`ƒWƒ…ƒ‰‹I�y��Ž•�j�z�B
�@��Ž¦�€‰»�Î�B�y��Ž•�j�z�B
�–Œ»�¢‚̃kƒ^‚ƃ„ƒcƒ�‚Ì’†ŠÔ‚Ɉʒu‚·‚鑶�Ý�y��Ž•�j�z�B
�–�¢ŠE’†�y��Ž•�j�z�B
�–ŠC�…�±�A’ê�±�y��Ž•�j�z�B
�–‘Ì�‚’á‚­‰~“›Œ`‚̉V—l�y��Ž•�j�z�B
�–‚P‘΂̑傫‚ÈŠá‹…�y��Ž•�j�z�B
�–éÒ�E�y��Ž•�j�z�B
�–”÷�ׂȎ•�ó“Ë‹N‚ð—L‚·‚é�y��Ž•�j�z�B
�–Ž•�ó“Ë‹N‚̓Šƒ“Ž_ƒJƒ‹ƒVƒEƒ€‚ÅŒ`�¬�y��Ž•�j�z�B
�@�‚ƒXƒRƒŒƒRƒhƒ“ƒg Scolecodonts [Annelida]�BƒLƒ`ƒ“Ž¿�B
�–’PŽ•�ó(�^�«ƒRƒmƒhƒ“ƒg�j�E•¡Ž•�ó(ƒYƒ‰ƒŠ�j�E”Â�ó(Š{�ó�j‚È‚Ç—l�X�y��Ž•�j�z�B
�–‘Ì�ß�{�y��Ž•�j�z�B
�–Šá‹…‚Í‘å‚«‚­‘O•û‚É“Ë�o�y��Ž•�j�z�B
�–Œû‚͉º•û‚ÉŠJ‚­�y��Ž•�j�z�B
�–Ž•‚ÍŠÛ‚¢Œû‚Ƀ„ƒcƒ�ƒEƒiƒM‚̂悤‚É”õ‚í‚é�y��Ž•�j�z�B
�–”ñ‘Εh‚͘A‘±�«�A•h�ð‚ÉŽxŽ�‚³‚ê‚é�y��Ž•�j�z�B
�–—c�¶‚̓Iƒ^ƒ}ƒWƒƒƒNƒV‚̂悤�y��Ž•�j�z�B
�–ƒIƒ‹ƒhƒrƒX‹I�yƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX‰È�z�B



Family POLYPLACOGNATHIDAE BERGSTRÖM 1981�@ƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX‰È
Conodonts (ƒRƒmƒhƒ“ƒg—Þ)
Polyplacognathids (ƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX‰È‹›Ží)


Genus Baltoplacognathus^♂ (ZHANG 1998)�@ƒoƒ‹ƒgƒvƒ‰ƒRƒOƒiƒgƒDƒX‘® (�â–Å)

�Ÿƒoƒ‹ƒgƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒŒƒNƒŠƒiƒgƒDƒX (�â–Å)
�@^†Baltoplacognathus reclinatus (Fåhræus 1966)
�@�@�@syn.Ambalodus reclinatus Fåhræus 1966
�@�@�@�@�@Baltoplacognathus reclinatus (Fåhræus 1966)
�@�@�@�@�@Eoplacognathus reclinatus (Fåhræus 1966)
�@^*1966�wLower Viruan, Middle Ordovician Conodonts from the Gullhögen Quarry, Southern Central Sweden�FLars E.Fåhræus�x�B
�@^*1998�wFour Evolutionary Lineages of the Middle Ordovician Conodont Family Polyplacognathidae�FJian-Hua Zhang�x�B
�@^*2001�wConodont Biostratigraphy and Taxonomy of the Ordovician Shelf Margin Deposits in the Scandinavian Caledonides�FJan Audun Rasmussen�x�B
�@^*2013-2014�wConodonti e Acritarchi del Darriwiliano, Ordoviciano Medio della Sezione di Källa, Öland, Svezia�FSerena Frisenda, Gabriella Bagnoli & Cristiana Ribecai�x�B

�Ÿƒoƒ‹ƒgƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒ�ƒuƒXƒgƒDƒX (�â–Å)
�@^†Baltoplacognathus robustus Bergström 1971
�@�@�@syn.Eoplacognathus lindstroemi robustus (Bergström 1971)
�@�@�@�@�@Eoplacognathus robustus Bergström 1971
�@�@�@�@�@Polyplacognathus robustus (Bergström 1971)
�@^*1971�wLower Ordovician Conodonts of Europe�FStig Magnus Bergström�x�B
�@^*1978�wConodonts from the Cobbs Arm Formation, Middle Ordovician, North-Central Newfoundland�FDavid Roy Hunter�x�B
�@^*1994�wConodonts of the Mójcza Limestone�FJerzy Dzik�x�B
�@^*2013-2014�wConodonti e Acritarchi del Darriwiliano, Ordoviciano Medio della Sezione di Källa, Öland, Svezia�FSerena Frisenda, Gabriella Bagnoli & Cristiana Ribecai�x�B
�@^*2015�wThe Balognathiid Ordovician Conodonts Eoplacognathus robustus Bergström and E.lindstroemi Hamar�FSusana Heredia1 & Ana Mestre�x�B
�@^*2019�wThe Middle Ordovician Conodonts Eoplacognathus robustus Bergström and E.lindstroemi (Hamar), Taxonomy and Apparatus Reconstruction�FSusana Heredia & Ana Mestre�x�B

---

Genus Eoplacognathus^♂ HAMAR 1966�@ƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX‘® (�â–Å)
�@�@�@�¦��Genus Eoplacognathodus^♂ CANTRELL 2003�BŠ¨ˆá‚¢�B
�@ƒIƒ‹ƒhƒrƒX‹I�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒAƒNƒ�ƒX (�â–Å)
�@^†Eoplacognathus acros Viĭra 1972
�@^*1972�wOn Symmetry of Some Middle Ordovician Conodonts�FViive Viĭra�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒAƒ€ƒoƒ�ƒCƒfƒX (�â–Å)
�@^†Eoplacognathus ambaloides Bergström 1971
�@^*1971�wLower Ordovician Conodonts of Europe�FStig Magnus Bergström�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒGƒ�ƒ“ƒKƒgƒDƒX (�â–Å)
�@^†Eoplacognathus elongatus (Bergström 1962)
�@�@�@syn.Amorphognathus elongatus Bergström 1962
�@�@�@�@�@Eoplacognathodus elongatus (Bergström 1962)�@�¦ƒXƒyƒ‹ƒ~ƒX�B
�@�@�@�@�@Polyplacognathus elongatus (Bergström 1962)
�@^*1962�wConodonts from the Ludibundus Limestone, Middle Ordovician of the Tvaren Area, South-East Sweden�FStig Magnus Bergström�x�B
�@^*1964�wThe Middle Ordovician of the Oslo Region, Norway 17, Conodonts from the Lower Middle Ordovician of Ringerike�FGyörgy Hamar�x�B
�@^*1994�wConodonts of the Mójcza Limestone�FJerzy Dzik�x�B
�@^*2003�wAspects of Ordovician Conodonts and the Stratigraphy of Thailand, Malaysia and Tasmania 1�FRobin Crawford Cantrill�x�B
�@^*2013�wŠÃ�l•½™y”Ó‰œ“©�¢•½™y‘g‰åŒ`Žh“I�V”­Œ©‹y‘´ˆÓ‹`�F‰¤Žu�_�^Stig Magnus Bergström�^áJ—E‹B�^’£Œ³“®�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒGƒLƒXƒeƒ“ƒXƒX (�â–Å)
�@^†Eoplacognathus extensus Hamar 1966
�@^*1966�wThe Middle Ordovician of the Oslo Region, Norway 22, Preliminary Report on Conodonts from the Oslo-Asker and Ringerike Districts�FGyörgy Hamar�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒŠƒ“ƒhƒXƒgƒ�ƒGƒ~ (�â–Å)
�@^†Eoplacognathus lindstroemi (Hamar 1964) Hamar 1966
�@�@�@syn.Ambalodus lindstroemi Hamar 1964
�@^*1964�wThe Middle Ordovician of the Oslo Region, Norway 17, Conodonts from the Lower Middle Ordovician of Ringerike�FGyörgy Hamar�x�B
�@^*1966�wThe Middle Ordovician of the Oslo Region, Norway 22, Preliminary Report on Conodonts from the Oslo-Asker and Ringerike Districts�FGyörgy Hamar�x�B
�@^*1971�wLower Ordovician Conodonts of Europe�FStig Magnus Bergström�x�B
�@^*1978�wConodonts from the Cobbs Arm Formation, Middle Ordovician, North-Central Newfoundland�FDavid Roy Hunter�x�B
�@^*1994�wConodonts of the Mójcza Limestone�FJerzy Dzik�x�B
�@^*2001�wConodont Biostratigraphy and Taxonomy of the Ordovician Shelf Margin Deposits in the Scandinavian Caledonides�FJan Audun Rasmussen�x�B
�@^*2015�wThe Balognathiid Ordovician Conodonts Eoplacognathus robustus Bergström and E.lindstroemi Hamar�FSusana Heredia1 & Ana Mestre�x�B
�@^*2019�wThe Middle Ordovician Conodonts Eoplacognathus robustus Bergström and E.lindstroemi (Hamar), Taxonomy and Apparatus Reconstruction�FSusana Heredia & Ana Mestre�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒ�ƒuƒ‹ƒX (�â–Å)
�@^†Eoplacognathus lobulus Viĭra 1972
�@^*1972�wOn Symmetry of Some Middle Ordovician Conodonts�FViive Viĭra�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒvƒZƒEƒhƒvƒ‰ƒkƒX (�â–Å)
�@^†Eoplacognathus pseudoplanus (Viĭra 1974)
�@�@�@syn.Ambalodus pseudoplanus Viĭra 1974
�@�@�@�@�@Lenodus pseudoplanus Viĭra 1974
�@^*1974�w„K„€„~„€„t„€„~„„„� „€„‚„t„€„r„y„{„p „P„‚„y„q„p„|„„„y„{„y 1�F„B„y„z„r„u „`„p„~„€„r„~„p „B„y„z„‚„p�x�B
�@^*2012�wBioestratigrafía de Conodontes del Darriwiliano Medio, Ordovícico de Argentina, la Formación Las Aguaditas, Precordillera Central�FSusana Heredia�x�B
�@^*2013�wBiostratigraphic Significance of Darriwilian Conodonts from Sierra de La Trampa, Central Precordillera, San Juan, Argentina�FAna Mestre & Susana Emma Heredia�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒXƒGƒLƒNƒX (�â–Å)
�@^†Eoplacognathus suecicus Bergstörm 1971
�@^*1971�wLower Ordovician Conodonts of Europe�FStig Magnus Bergström�x�B
�@^*1973�wLower and Middle Ordovician Conodonts from the Mystic Formation, Quebec, Canada�FChristopher Richard Barnes & M.L.Silvana Poplawski�x�B
�@^*2001�wConodont Biostratigraphy and Taxonomy of the Ordovician Shelf Margin Deposits in the Scandinavian Caledonides�FJan Audun Rasmussen�x�B
�@^*2012�wBioestratigrafía de Conodontes del Darriwiliano Medio, Ordovícico de Argentina, la Formación Las Aguaditas, Precordillera Central�FSusana Heredia�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒgƒŠƒfƒ“ƒX (�â–Å)
�@^†Eoplacognathus tridens Viĭra 1972
�@^*1972�wOn Symmetry of Some Middle Ordovician Conodonts�FViive Viĭra�x�B

�ŸƒGƒIƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒYƒMƒGƒ‹ƒ[ƒ“ƒVƒX (�â–Å)
�@^†Eoplacognathus zgierzensis Dzik 1976
�@^*1976�wRemarks on the Evolution of the Ordovician Conodonts�FJerzy Dzik�x�B
�@^*1994�wConodonts of the Mójcza Limestone�FJerzy Dzik�x�B

---

Genus Polyplacognathus^♂ STAUFFER 1935�@ƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX‘® (�â–Å)

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒAƒ“ƒKƒŒƒ“ƒVƒX (�â–Å)
�@^†Polyplacognathus angarensis Moskalenko 1984
�@^*1984�w„O„‚„t„€„r„y„{ „x„p„�„p„t„~„€„z „‰„p„ƒ„„„y „I„‚„{„…„„„ƒ„{„€„s„€ „p„}„†„y„„„u„p„„„‚„p�F„@„|„u„{„ƒ„p„~„t„‚ „B„p„ƒ„y„|„Ž„u„r„y„‰ „K„p„~„�„s„y„~, „S„p„}„p„‚„p „@„|„u„{„ƒ„p„~„t„‚„€„r„~„p „M„€„ƒ„{„p„|„u„~„{„€, „S„p„„„Ž„‘„~„p „@„|„u„{„ƒ„p„~„t„‚„€„r„~„p „D„y„r„y„~„p, „B„p„|„u„~„„„y„~„p „C„‚„y„s„€„‚„Ž„u„r„~„p „M„p„„„…„‡„y„~„p & „@„~„p„ƒ„„„p„ƒ„y„y „C„u„~„~„p„t„Ž„u„r„~„� „`„t„‚„u„~„{„y„~„p�x�B
�@<sup>*1990</sup>�w„M„…„{„„„�„z„ƒ„{„y„z „s„€„‚„y„x„€„~„„ „y „u„s„€ „ƒ„„„‚„p„„„€„„„y„� in „N„€„r„€„u „r „�„p„|„u„€„~„„„€„|„€„s„y„y „y „q„y„€„ƒ„„„‚„p„„„y„s„‚„p„†„y„y „�„p„|„u„€„x„€„‘ „@„x„y„p„„„ƒ„{„€„z „‰„p„ƒ„„„y „R„R„R„Q�F„S„p„}„p„‚„p „@„|„u„{„ƒ„p„~„t„‚„€„r„~„p „M„€„ƒ„{„p„|„u„~„{„€ & „@„~„p„ƒ„„„p„ƒ„y„y „C„u„~„~„p„t„Ž„u„r„~„� „`„t„‚„u„~„{„y„~„p�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒrƒ�ƒoƒgƒDƒX (�â–Å)
�@^†Polyplacognathus bilobatus Schopf 1964
�@^*1964�wConodonts of the Trenton Group, Ordovician in New York, Southern Ontario and Quebec�FThomas Joseph Morton Schopf�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒKƒ‹ƒ‹ƒX (�â–Å)
�@^†Polyplacognathus gallus Viĭra 1974
�@^*1974�w„K„€„~„€„t„€„~„„„� „€„‚„t„€„r„y„{„p „P„‚„y„q„p„|„„„y„{„y 1�F„B„y„z„r„u „`„p„~„€„r„~„p „B„y„z„‚„p�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒ~ƒAƒIƒ|ƒGƒ“ƒVƒX (�â–Å)
�@^†Polyplacognathus miaopoensis An, Du, Gao, Chen & Li 1981
�@^*1981�wŒÎ–k‹X�¹‰©‰Ô—g’n‹æ‰œ“©Œn‰åŒ`�Î�¶•¨’n‘w�FˆÀ‘×›÷�^“m�‘�´�^�‚‹Õ‹Õ�^’‹ԕÛ�^—›ˆÌ“¯�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒ~ƒ‹ƒX (�â–Å)
�@^†Polyplacognathus mirus Viĭra 1974
�@^*1974�w„K„€„~„€„t„€„~„„„� „€„‚„t„€„r„y„{„p „P„‚„y„q„p„|„„„y„{„y 1�F„B„y„z„r„u „`„p„~„€„r„~„p „B„y„z„‚„p�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒyƒ^ƒ�ƒCƒfƒEƒX (�â–Å)
�@^†Polyplacognathus petaloideus Moskalenko 1970
�@^*1970�w„K„€„~„€„t„€„~„„„� „{„‚„y„r„€„|„…„ˆ„{„€„s„€ „‘„‚„…„ƒ„p, „ƒ„‚„u„t„~„y„J „€„‚„t„€„r„y„{ „R„y„q„y„‚„ƒ„{„€„z „�„|„p„„„†„€„‚„}„��F„S„p„}„p„‚„p „@„|„u„{„ƒ„p„~„t„‚„€„r„~„p „M„€„ƒ„{„p„|„u„~„{„€�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒNƒCƒ“ƒNƒGƒtƒHƒŠƒEƒX (�â–Å)
�@^†Rotundacodina quinquefolius Drygant 1974
�@^*1974�w„P„‚„€„ƒ„„„�„u „{„€„~„€„t„€„~„„„� „ƒ„y„|„…„‚„p „y „~„y„x„€„r „t„u„r„€„~„p „B„€„|„�„~„€-„P„€„t„€„|„Ž„‘�F„D„p„~„y„|„€ „M„y„‡„p„z„|„€„r„y„‰ „D„‚„y„s„p„~„„�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒ‰ƒ‚ƒXƒX (�â–Å)
�@^†Polyplacognathus ramosus Stauffer 1935
�@^*1935�wConodonts of the Glenwood Beds�FClinton Raymond Stauffer�x�B
�@^*1964�wConodonts of the Trenton Group, Ordovician in New York, Southern Ontario and Quebec�FThomas Joseph Morton Schopf�x�B
�@^*1966�wConodonts from the Lexington Limestone, Middle Ordovigian of Kentucky and Its Lateral Equivalents in Ohio and Indiana�FStig Magnus Bergström & Walter Clarence Sweet�x�B
�@^*1971�wConodonts and Biostratigraphy of the Wisconsin Paleozoic�FDavid Leigh Clark�x�B
�@^*1974�wConodonts of the Hull Formation, Ottawa Group, Middle Ordovician of the Ottawa-Hull Area, Ontario and Quebec�FThomas T.Uyeno�x�B
�@^*1977�wOrdovician Conodonts from the Ship Point and Bad Cache Rapids Formations, Melville Peninsula, South-Eastern District of Franklin�FChristopher Richard Barnes�x�B
�@^*1979�wConodonts and Conodont Biostratigraphy of Post-Tyrone Ordovician Rocks of the Cincinnati Region by Walter Clarence Sweet in Contributions to the Ordovician Paleontology of Kentucky and Nearby States�FJohn Pojeta Jr.�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒ‰ƒ€ƒX (�â–Å)
�@^†Polyplacognathus ramus Viĭra 1974
�@^*1974�w„K„€„~„€„t„€„~„„„� „€„‚„t„€„r„y„{„p „P„‚„y„q„p„|„„„y„{„y 1�F„B„y„z„r„u „`„p„~„€„r„~„p „B„y„z„‚„p�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒŠƒ“ƒQƒŠƒPƒ“ƒVƒX (�â–Å)
�@^†Polyplacognathus ringerikensis Hamar 1964
�@^*1964�wThe Middle Ordovician of the Oslo Region, Norway 17, Conodonts from the Lower Middle Ordovician of Ringerike�FGyörgy Hamar�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒXƒeƒ‹ƒŠƒtƒHƒ‹ƒ~ƒX (�â–Å)
�@^†Polyplacognathus stelliformis Sweet & Bergström 1962
�@^*1962�wConodonts from the Pratt Ferry Formation, Middle Ordovician of Alabama�FWalter Clarence Sweet & Stig Magnus Bergström�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒXƒeƒ‹ƒ‹ƒX (�â–Å)
�@^†Polyplacognathus stellus Viĭra 1972
�@^*1972�wOn Symmetry of Some Middle Ordovician Conodonts�FViive Viĭra�x�B

�Ÿƒ|ƒŠƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒXƒgƒGƒ‹ƒ�ƒŠ (�â–Å)
�@^†Polyplacognathus stoermeri Hamar 1966
�@^*1966�wThe Middle Ordovician of the Oslo Region, Norway 22, Preliminary Report on Conodonts from the Oslo-Asker and Ringerike Districts�FGyörgy Hamar�x�B

---

Genus Prattognathus^♂ BERGSTRÖM 1983�@ƒvƒ‰ƒbƒgƒOƒiƒgƒDƒX‘® (�â–Å)�@�¦•ª—Þ‚ÍŽb’è�B

�Ÿƒvƒ‰ƒbƒgƒOƒiƒgƒDƒX�Eƒ‹ƒgƒŠƒtƒHƒ‹ƒ~ƒX (�â–Å)
�@^†Prattognathus rutriformis (Sweet & Bergström 1962)
�@�@�@syn.Polyplacognathus rutriformis Sweet & Bergström 1962
�@^*1962�wConodonts from the Pratt Ferry Formation, Middle Ordovician of Alabama�FWalter Clarence Sweet & Stig Magnus Bergström�x�B
�@^*1983�wBiogeography, Evolutionary Relationships and Biostratigraphic Significanee of Ordovician Platform Conodonts�FStig Magnus Bergström�x�B

---

Genus Yangtzeplacognathus^♂ ZHANG 1998�@ƒ„ƒ“ƒOƒgƒ[ƒvƒ‰ƒRƒOƒiƒgƒDƒX‘® (�â–Å)

�Ÿƒ„ƒ“ƒOƒgƒ[ƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒNƒ‰ƒbƒXƒX (�â–Å)
�@^†Yangtzeplacognathus crassus (Chen & Zhang ex Ding, Chen, Zhang & Cao 1993)
�@�@�@syn.Eoplacognathus crassus Chen & Zhang ex Ding, Chen, Zhang & Cao 1993
�@^*1993�wŠ¦•�‹I�A‰œ“©‹I‰åŒ`Žh�F’š˜A�¶�^’•q›N�^’£Œš‰Ø�^‘‚ŠC“ø�x�B
�@^*2011�wMiddle to Late Ordovician, Darriwilian-Sandbian Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, North-Western China�FYong-Yi Zhen, Zhi-Hao Wang, Yuan-Dong Zhang, Stig Magnus Bergström, Ian G.Percival & Jun-Feng Cheng�x�B
�@^*2013�wLa Zona de Yangtzeplacognathus crassus [Conodonta], Darriwiliano de la Precordillera Central, San Juan, Argentina�FAna Mestre & Susana Heredia�x�B

�Ÿƒ„ƒ“ƒOƒgƒ[ƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒtƒHƒŠƒAƒPƒEƒX (�â–Å)
�@^†Yangtzeplacognathus foliaceus (Fåhræus 1966)
�@�@�@syn.Ambalodus foliaceus Fåhræus 1966
�@�@�@�@�@Eoplacognathus foliaceus (Fåhræus 1966)
�@�@�@�@�@Polyplacognathus humilis Viĭra 1974
�@^*1966�wLower Viruan, Middle Ordovician Conodonts from the Gullhögen Quarry, Southern Central Sweden�FLars E.Fåhræus�x�B
�@^*1974�w„K„€„~„€„t„€„~„„„� „€„‚„t„€„r„y„{„p „P„‚„y„q„p„|„„„y„{„y 1�F„B„y„z„r„u „`„p„~„€„r„~„p „B„y„z„‚„p�x�B
�@^*2015�wOrdovician, Middle Darriwilian-Earliest Sandbian Conodonts from the Wuhai area of Inner Mongolia, North China�FXiu-Chun Jing, Hong-Rui Zhou & Xun-Lian Wang�x�B

�Ÿƒ„ƒ“ƒOƒgƒ[ƒvƒ‰ƒRƒOƒiƒgƒDƒX�EƒCƒAƒjƒGƒGƒ“ƒVƒX (�â–Å)
�@^†Yangtzeplacognathus jianyeensis (An & Ding 1982)
�@�@�@syn.Eocoplacognathus jianyeensis (An & Ding 1982)
�@�@�@�@�@Eoplacognathus ramosus Chen, Chen & Zhang 1983
�@�@�@�@�@Polyplacognathus jianyeensis An & Ding 1982
�@^*1982�w”J镇ŽRãõ’n‹æ‰œ“©Œn‰åŒ`�ΓI�‰•àŒ¤‹†‹y‘Δä�FˆÀ‘×›÷�^’š˜A�¶�x�B
�@<sup>*1983</sup>�w”J’Á’n‹æ‰œ“©Œn‰åŒ`Žh�˜—ñ�F’•q›N�^’‰_“°�^’£Œš‰Ø�x�B
�@^*1998�wConodonts from the Guniutan Formation, Llanvirnian in Hubei and Hunan Provinces, South-Central China�FJian-Hua Zhang�x�B
�@^*2011�wMiddle to Late Ordovician, Darriwilian-Sandbian Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, North-Western China�FYong-Yi Zhen, Zhi-Hao Wang, Yuan-Dong Zhang, Stig Magnus Bergström, Ian G.Percival & Jun-Feng Cheng�x�B

�Ÿƒ„ƒ“ƒOƒgƒ[ƒvƒ‰ƒRƒOƒiƒgƒDƒX�Eƒvƒ�ƒgƒ‰ƒ‚ƒXƒX (�â–Å)
�@^†Yangtzeplacognathus protoramosus (Chen, Chen & Zhang 1983)
�@�@�@syn.Cahabagnathus protoramosus (Chen, Chen & Zhang 1983)
�@�@�@�@�@Eoplacognathus protoramosus Chen, Chen & Zhang 1983
�@^*1983�w”J’Á’n‹æ‰œ“©Œn‰åŒ`Žh�˜—ñ�F’•q›N�^’‰_“°�^’£Œš‰Ø�x�B
�@^*1994�wConodonts of the Mójcza Limestone�FJerzy Dzik�x�B
�@^*2011�wMiddle to Late Ordovician, Darriwilian-Sandbian Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, North-Western China�FYong-Yi Zhen, Zhi-Hao Wang, Yuan-Dong Zhang, Stig Magnus Bergström, Ian G.Percival & Jun-Feng Cheng�x�B

---