分類トップ

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＊カンブリア紀〜現代【無顎上綱】。
＊軟骨【無顎上綱】。
＊淡水棲、汽水棲、海水棲、底棲【無顎上綱】。
＊鱗を欠く【無顎上綱】。
＊鰾を欠く【無顎上綱】。
＊耳石を欠く【無顎上綱】。
＊対鰭を欠く(例外あり）【無顎上綱】。
＊成魚は側線を欠く【無顎上綱】。
＊外鼻孔は正中線上に１個【無顎上綱】。
＊舌に角質歯【無顎上綱】。
＊嚢状鰓(鰓嚢）は体表に開口【無顎上綱】。
＊消化管は直走【無顎上綱】。
＊卵生・体外受精【無顎上綱】。
＊カンブリア紀〜三畳紀〜ジュラ紀【錐歯綱】。
　＝示準化石。【錐歯綱】。
＊現世のヌタとヤツメの中間に位置する存在【錐歯綱】。
＊世界中【錐歯綱】。
＊海水棲、底棲【錐歯綱】。
＊体高低く円筒形の鰻様【錐歯綱】。
＊１対の大きな眼球【錐歯綱】。
＊鰓孔【錐歯綱】。
＊微細な歯状突起を有する【錐歯綱】。
＊歯状突起はリン酸カルシウムで形成【錐歯綱】。
　≠スコレコドント Scolecodonts [Annelida]。キチン質。
＊単歯状(真性コノドント）・複歯状(ズラリ）・板状(顎状）など様々【錐歯綱】。
＊体節＋【錐歯綱】。
＊眼球は大きく前方に突出【錐歯綱】。
＊口は下方に開く【錐歯綱】。
＊歯は丸い口にヤツメウナギのように備わる【錐歯綱】。
＊非対鰭は連続性、鰭条に支持される【錐歯綱】。
＊幼生はオタマジャクシのよう【錐歯綱】。



Family PARACORDYLODONTIDAE BERGSTRÖM 1981　パラコルディロドゥス科
Conodonts (コノドント類)
Paracordylodontids (パラコルディロドゥス科魚種)


Genus Cooperignathus^♂ ZHEN ex ZHEN, PERCIVAL & WEBBY 2003　コオペリグナトゥス属 (絶滅)

◆コオペリグナトゥス・アランドゥス (絶滅)
　^†Cooperignathus arandus (Cooper 1981) Zhen ex Zhen, Percival & Webby 2003
　　　syn.Protoprioniodus arandus Cooper 1981
　^*1981『Early Ordovician Conodonts from the Horn Valley Siltstone, Central Australia：Barry John Cooper』。
　^*1985『Ibexian-Whiterockian, Ordovician Conodont Palaeontology of East and Eastern North Greenland：Michael Paul Smith』。
　^*1986『Early Ordovician, Arenig Conodonts from Saint Pauls Inlet and Martin Point, Cow Head Group, Western Newfoundland：David Ian Johnston』。
　^*1989『Conodonts and Phosphatic Problematica from the Cambro-Ordovician Cooks Brook and Middle Arm Point Formations, Bay of Islands, Western Newfoundland：Kaustuv Roy』。
　^*2000『Stratigraphy, Conodont Taxonomy and Biostratigraphy of Upper Cambrian to Lower Silurian Platform to Basin Facies, Northern British Columbia：Leanne J.Pyle』。
　^*2002『Taxonomy, Evolution and Biostratigraphy of Conodonts from the Kechika Formation, Skoki Formation and Road River Group, Upper Cambrian to Lower Silurian, North-Eastern British Columbia：Leanne J.Pyle & Christopher Richard Barnes』。
　^*2003『Early Ordovician Conodonts from Far Western New South Wales, Australia：Yong-Yi Zhen, Ian G.Percival & Barry Deane Webby』。
　^*2006『Lower and Middle Ordovician Conodonts from the Thung Song and Thung Wa Areas, Southern Peninsular Thailand：Sachiko Agematsu, Katsuo Sashida, Sirot Salyapongse & Apsorn Sardsud』。

◆コオペリグナトゥス・ニンティ (絶滅)
　^†Cooperignathus nyinti (Cooper 1981) Zhen ex Zhen, Percival & Webby 2003
　　　syn.Protoprioniodus nyinti Cooper 1981
　^*1981『Early Ordovician Conodonts from the Horn Valley Siltstone, Central Australia：Barry John Cooper』。
　^*2000『Stratigraphy, Conodont Taxonomy and Biostratigraphy of Upper Cambrian to Lower Silurian Platform to Basin Facies, Northern British Columbia：Leanne J.Pyle』。
　^*2002『Taxonomy, Evolution and Biostratigraphy of Conodonts from the Kechika Formation, Skoki Formation and Road River Group, Upper Cambrian to Lower Silurian, North-Eastern British Columbia：Leanne J.Pyle & Christopher Richard Barnes』。
　^*2003『Early Ordovician Conodonts from Far Western New South Wales, Australia：Yong-Yi Zhen, Ian G.Percival & Barry Deane Webby』。
　^*2006『Lower and Middle Ordovician Conodonts from the Thung Song and Thung Wa Areas, Southern Peninsular Thailand：Sachiko Agematsu, Katsuo Sashida, Sirot Salyapongse & Apsorn Sardsud』。

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Genus Fahraeusodus^♂ STOUGE & BAGNOLI 1988　ファーラエウソドゥス属 (絶滅)

◆ファーラエウソドゥス・アデンタトゥス (絶滅)
　^†Fahraeusodus adentatus (McTavish 1973)
　　　syn.Microzarkodina adentata McTavish 1973
　^*1973『Prioniodontacean Conodonts from the Emanuel Formation, Lower Ordovician of Western Australia：Robert A.McTavish』。
　^*1988『Early Ordovician Conodonts from Cow Head Peninsula, Western Newfoundland：Svend Josef Høegh Sandbergh Stouge & Gabriella Bagnoli』。
　^*2009『Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna [Conodonta] from the Emanuel Formation, Early Ordovician of the Canning Basin, Western Australia：Yong-Yi Zhen & Robert S.Nicoll』。
　^*2023『Revision of the Ordovician Conodont Species Fahraeusodus adentatus and the New Genus Pohlerodus：Yong-Yi Zhen』。

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Genus Oleandodus^♂ VAN WAMEL 1974　オレアンドドゥス属 (絶滅)

◆オレアンドドゥス・コスタトゥス (絶滅)
　^†Oleandodus costatus van Wamel 1974
　^*1974『Conodont Biostratigraphy of the Upper Cambrian and Lower Ordovician of North-Western and South-Eastern Sweden：Willem Anton van Wamel』。

◆オレアンドドゥス・エロンガトゥス (絶滅)
　^†Oleandodus elongatus (Lindström 1955) van Wamel 1974
　　　syn.Oleandodus elongatus van Wamel 1974
　　　　　Oistodus elongatus Lindström 1955
　^*1955『Conodonts from the Lower-Most Ordovician Strata of South-Central Sweden：Maurits Lindström』。
　^*1974『Conodont Biostratigraphy of the Upper Cambrian and Lower Ordovician of North-Western and South-Eastern Sweden：Willem Anton van Wamel』。
　^*1994『Conodont Biofacies of Lower to Lower Middle Ordovician Megaconglomerates, Cow Head Group, Western Newfoundland：Susanne Margarete Luise Pohler』。
　^*2000『Stratigraphy, Conodont Taxonomy and Biostratigraphy of Upper Cambrian to Lower Silurian Platform to Basin Facies, Northern British Columbia：Leanne J.Pyle』。
　^*2001『Conodont Biostratigraphy and Taxonomy of the Ordovician Shelf Margin Deposits in the Scandinavian Caledonides：Jan Audun Rasmussen』。
　^*2002『Taxonomy, Evolution and Biostratigraphy of Conodonts from the Kechika Formation, Skoki Formation and Road River Group, Upper Cambrian to Lower Silurian, North-Eastern British Columbia：Leanne J.Pyle & Christopher Richard Barnes』。
　^*2014『Биостратиграфия и биогеография конодонтов ордовика, западной части Центрально-Азиатского складчатого пояса：Татьяна Юрьевна Толмачева』。

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Genus Paracordylodus^♂ LINDSTRÖM 1955 emend. BARNES & POPLAWSKI 1973　パラコルディロドゥス属 (絶滅)

◆パラコルディロドゥス・ベルグストロエミ (絶滅)
　^†Paracordylodus bergstroemi Hamar 1964
　^*1964『The Middle Ordovician of the Oslo Region, Norway 17, Conodonts from the Lower Middle Ordovician of Ringerike：György Hamar』。

◆パラコルディロドゥス・グイゾウエンシス (絶滅)
　^†Paracordylodus guizhouensis Zhou, Zhai & Xian 1981
　^*1981『貴州志留系生物地層及新種：周希雲／翟志強／鮮思遠』。
　^*1983『志留紀牙形石−西南地区古生物図冊／微体古生物分冊：周希雲／翟志強』。

◆パラコルディロドゥス・グラキリス (絶滅)
　^†Paracordylodus gracilis Lindström 1955 emend. van Wamel 1974
　　　syn.Oistodus gracilis Lindström 1955 non Branson & Mehl 1933
　^*1955『Conodonts from the Lower-Most Ordovician Strata of South-Central Sweden：Maurits Lindström』。
　^*1958『A Key to Conodont Genera and Sub-Genera：Robert Oran Fay』。
　^*1973『Conodonts from the Cow Head Group, Western Newfoundland：Godfrey S.Nowlan』。
　^*1973『Lower and Middle Ordovician Conodonts from the Mystic Formation, Quebec, Canada：Christopher Richard Barnes & M.L.Silvana Poplawski』。
　^*1974『Conodont Biostratigraphy of the Upper Cambrian and Lower Ordovician of North-Western Öland, South-Eastern Sweden：Willem Anton van Wamel』。
　^*1976『Early Ordovician, Arenigian Conodont and Graptolite Biostratigraphy of the Taconic Allochthon, Eastern New York：Ed Landing』。
　^*1982『Conodonts from El Paso Group, Lower Ordovician of Westernmost Texas and Southern New Mexico：John E.Repetski』。
　^*1986『Early Ordovician, Arenig Conodonts from Saint Pauls Inlet and Martin Point, Cow Head Group, Western Newfoundland：David Ian Johnston』。
　^*1989『Upper Canadian to Whiterockian, Ordovician in Saint John's Conodont Biostratigraphy of the Upper Saint George Group, Western Newfoundland：Kathleen Anne Stait』。
　^*2000『Stratigraphy, Conodont Taxonomy and Biostratigraphy of Upper Cambrian to Lower Silurian Platform to Basin Facies, Northern British Columbia：Leanne J.Pyle』。
　^*2000『Конодонты и Зональная стратиграфия пограничных отложений кембрия и ордовика：Светлана Викторовна Дубинина』。
　^*2001『Conodont Biostratigraphy and Taxonomy of the Ordovician Shelf Margin Deposits in the Scandinavian Caledonides：Jan Audun Rasmussen』。
　^*2002『Taxonomy, Evolution and Biostratigraphy of Conodonts from the Kechika Formation, Skoki Formation and Road River Group, Upper Cambrian to Lower Silurian, North-Eastern British Columbia：Leanne J.Pyle & Christopher Richard Barnes』。
　^*2003『Aspects of Ordovician Conodonts and the Stratigraphy of Thailand, Malaysia and Tasmania 1：Robin Crawford Cantrill』。
　^*2009『Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna [Conodonta] from the Emanuel Formation, Early Ordovician of the Canning Basin, Western Australia：Yong-Yi Zhen & Robert S.Nicoll』。
　^*2014『Биостратиграфия и биогеография конодонтов ордовика, западной части Центрально-Азиатского складчатого пояса：Татьяна Юрьевна Толмачева』。

◆パラコルディロドゥス・オリエンタリス (絶滅)
　^†Paracordylodus orientalis An 1983
　^*1983『寒武紀和奥陶紀牙形石 in 地質鉱産部成都地質鉱産研究所編西南地区古生物図冊微体古生物分冊牙形石：安泰庠』。

◆パラコルディロドゥス・スペキオスス (絶滅)
　^†Paracordylodus speciosus Fåhræus 1966
　^*1966『Lower Viruan, Middle Ordovician Conodonts from the Gullhögen Quarry, Southern Central Sweden：Lars E.Fåhræus』。

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Genus Pohlerodus^♀ ZEN 2023　ポーレロドゥス属 (絶滅)
　　　※≠Genus Texania^♀ CASEY 1909 [Buprestidae, Coleoptera, Insecta]。
　　　※＝Genus Texania^♀ POHLER 1994。

◆ポーレロドゥス・ヘリグムス (絶滅)
　^†Texania heligmus (Pohler 1994) Zhen 2023
　　　syn.Texania heligma Pohler 1994
　^*1994『Conodont Biofacies of Lower to Lower Middle Ordovician Megaconglomerates, Cow Head Group, Western Newfoundland：Susanne Margarete Luise Pohler』。
　^*2023『Revision of the Ordovician Conodont Species Fahraeusodus adentatus and the New Genus Pohlerodus：Yong-Yi Zhen』。

◆ポーレロドゥス・ヤカレンシス (絶滅)
　^†Pohlerodus jachalensis (Serra, Feltes, Henderson & Albanes 2017)
　　　syn.Fahraeusodus jachalensis Serra, Feltes, Henderson & Albanes 2017
　^*2017『Darriwilian, Middle Ordovician Conodont Biofacies from the Central Precordillera of Argentina：Fernanda Serra, Nicolás A.Feltes, Miles A.Henderson & Guillermo Luis Albanesi』。

◆ポーレロドゥス・マラトネンシス (絶滅)
　^†Pohlerodus marathonensis (Bradshaw 1969)
　　　syn.Fahraeusodus marathonensis (Bradshaw 1969)
　　　　　Gothodus marathonensis Bradshaw 1969
　　　　　Microzarkodina marathonensis (Bradshaw 1969)
　　　　　Oepikodus marathonensis (Bradshaw 1969)
　^*1969『Conodonts from th e Fort Peña Formation Middle Ordo vician, Marathon Basin, Texas：Lael Ely Bradshaw』。
　^*1982『Conodonts from El Paso Group, Lower Ordovician of Westernmost Texas and Southern New Mexico：John E.Repetski』。
　^*1985『Ibexian-Whiterockian, Ordovician Conodont Palaeontology of East and Eastern North Greenland：Michael Paul Smith』。
　^*1986『Early Ordovician, Arenig Conodonts from Saint Pauls Inlet and Martin Point, Cow Head Group, Western Newfoundland：David Ian Johnston』。
　^*1987『Conodont Biostratigraphy, Correlation and Depositional Environments of Middle Ordovician Rocks in Oklahoma：Jeffrey A.Bauer』。
　^*1989『Lower Ordovician Conodonts from the Saint George Group of Port au Port Peninsula, Western Newfoundland：Zai-Liang Ji』。
　^*1989『Upper Canadian to Whiterockian, Ordovician in Saint John's Conodont Biostratigraphy of the Upper Saint George Group, Western Newfoundland：Kathleen Anne Stait』。
　^*1991『Early Ordovician Conodonts of East and North Greenland：Michael Paul Smith』。
　^*2000『Stratigraphy, Conodont Taxonomy and Biostratigraphy of Upper Cambrian to Lower Silurian Platform to Basin Facies, Northern British Columbia：Leanne J.Pyle』。
　^*2001『Conodont Biostratigraphy and Taxonomy of the Ordovician Shelf Margin Deposits in the Scandinavian Caledonides：Jan Audun Rasmussen』。
　^*2002『Taxonomy, Evolution and Biostratigraphy of Conodonts from the Kechika Formation, Skoki Formation and Road River Group, Upper Cambrian to Lower Silurian, North-Eastern British Columbia：Leanne J.Pyle & Christopher Richard Barnes』。
　^*2010『Conodonts and Conodont Biostratigraphy of the Joins and Oil Creek Formations, Arbuckle Mountains, South-Central Oklahoma：Jeffrey A.Bauer』。
　^*2014『Биостратиграфия и биогеография конодонтов ордовика, западной части Центрально-Азиатского складчатого пояса：Татьяна Юрьевна Толмачева』。

◆ポーレロドゥス・ミルス (絶滅)
　^†Pohlerodus mirus (Stouge & Bagnoli 1988)
　　　syn.Fahraeusodus mirus Stouge & Bagnoli 1988
　^*1988『Early Ordovician Conodonts from Cow Head Peninsula, Western Newfoundland：Svend Josef Høegh Sandbergh Stouge & Gabriella Bagnoli』。

◆ポーレロドゥス・テラス (絶滅)
　^†Pohlerodus teras (Pohler 1994)
　　　syn.Texania teras Pohler 1994
　^*1994『Conodont Biofacies of Lower to Lower Middle Ordovician Megaconglomerates, Cow Head Group, Western Newfoundland：Susanne Margarete Luise Pohler』。

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Genus Protoprioniodus^♂ MCTAVISH 1973　プロトプリオニオドゥス属 (絶滅)

◆プロトプリオニオドゥス・コウヘアデンシス (絶滅)
　^†Protoprioniodus cowheadensis Stouge & Bagnoli 1988
　^*1988『Early Ordovician Conodonts from Cow Head Peninsula, Western Newfoundland：Svend Josef Høegh Sandbergh Stouge & Gabriella Bagnoli』。
　^*2000『Stratigraphy, Conodont Taxonomy and Biostratigraphy of Upper Cambrian to Lower Silurian Platform to Basin Facies, Northern British Columbia：Leanne J.Pyle』。
　^*2002『Taxonomy, Evolution and Biostratigraphy of Conodonts from the Kechika Formation, Skoki Formation and Road River Group, Upper Cambrian to Lower Silurian, North-Eastern British Columbia：Leanne J.Pyle & Christopher Richard Barnes』。

◆プロトプリオニオドゥス・ヒスティオン (絶滅)
　^†Protoprioniodus histion Watson 1988
　^*1988『Conodonts from a Core of the Nita and Goldwyer Formations, Lower Middle Ordovician, of the Canning Basin Western Australia：Simon Timothy Watson』。

◆プロトプリオニオドゥス・パピリオスス (絶滅)
　^†Protoprioniodus papiliosus (van Wamel 1974)
　　　syn.Oistodus papiliosus van Wamel 1974
　^*1974『Conodont Biostratigraphy of the Upper Cambrian and Lower Ordovician of North-Western and South-Eastern Sweden：Willem Anton van Wamel』。
　^*1985『Ibexian-Whiterockian, Ordovician Conodont Palaeontology of East and Eastern North Greenland：Michael Paul Smith』。
　^*1986『Early Ordovician, Arenig Conodonts from Saint Pauls Inlet and Martin Point, Cow Head Group, Western Newfoundland：David Ian Johnston』。
　^*1991『Early Ordovician Conodonts of East and North Greenland：Michael Paul Smith』。
　^*2014『Биостратиграфия и биогеография конодонтов ордовика, западной части Центрально-Азиатского складчатого пояса：Татьяна Юрьевна Толмачева』。

◆プロトプリオニオドゥス・シムプリキッシムス (絶滅)
　^†Protoprioniodus simplicissimus McTavish 1973
　^*1973『Prioniodontacean Conodonts from the Emanuel Formation, Lower Ordovician of Western Australia：Robert A.McTavish』。
　^*1986『Early Ordovician, Arenig Conodonts from Saint Pauls Inlet and Martin Point, Cow Head Group, Western Newfoundland：David Ian Johnston』。
　^*1989『Lower Ordovician Conodonts from the Saint George Group of Port au Port Peninsula, Western Newfoundland：Zai-Liang Ji』。

◆プロトプリオニオドゥス・ヤプ (絶滅)
　^†Protoprioniodus yapu Cooper 1981
　　　syn.Protoprioniodus costatus An 1987
　^*1981『Early Ordovician Conodonts from the Horn Valley Siltstone, Central Australia：Barry John Cooper』。
　^*1987『中国南部早古生代牙形石：安泰庠』。
　^*2003『Early Ordovician Conodonts from Far Western New South Wales, Australia：Yong-Yi Zhen, Ian G.Percival & Barry Deane Webby』。
　^*2006『Lower and Middle Ordovician Conodonts from the Thung Song and Thung Wa Areas, Southern Peninsular Thailand：Sachiko Agematsu, Katsuo Sashida, Sirot Salyapongse & Apsorn Sardsud』。

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