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Helcionellida
Taxonomy
Helcionellida was named by Geyer (1994).
It was assigned to Archaeobranchia by Bouchet et al. (2017); to Mollusca by Kouchinsky et al. (2017); and to Helcionelloida by Geyer (1994), Wotte (2006), Jacquet et al. (2016), Jacquet and Brock (2016), Wagner (2023), Noriega-Ruiz et al. (2023), Ebbestad et al. (2024).
It was assigned to Archaeobranchia by Bouchet et al. (2017); to Mollusca by Kouchinsky et al. (2017); and to Helcionelloida by Geyer (1994), Wotte (2006), Jacquet et al. (2016), Jacquet and Brock (2016), Wagner (2023), Noriega-Ruiz et al. (2023), Ebbestad et al. (2024).
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Helcionellida Geyer |
| 2006 | Helcionellida Wotte p. 149 |
| 2016 | Helcionellida Jacquet and Brock |
| 2016 | Helcionellida Jacquet et al. |
| 2017 | Helcionellida Bouchet et al. p. 322 |
| 2017 | Helcionellida Kouchinsky et al. p. 331 |
| 2023 | Helcionellida Noriega-Ruiz et al. p. 12 |
| 2023 | Helcionellida Wagner p. S7207 |
| 2024 | Helcionellida Ebbestad et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Or. †Helcionellida Geyer 1994
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Fm. †Coreospiridae Knight 1952
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G. †Coreospira Saito 1936
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†Coreospira raymondi Shaw 1957
†Coreospira rugosa Saito 1936
†Coreospira walcotti Knight 1947
G. †Shabaktiella Missarzhevsky and Mambetov 1981
G. †Tichkaella Geyer 1986
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†Tichkaella carinata Rasetti 1957
†Tichkaella hamata Geyer 1986
†Tichkaella insulcata Rasetti 1957
Invalid names: Archaeospiridae Yu 1979 [synonym], Latouchellidae Golikov and Starobogatov 1989 [synonym], Yangtzespiridae Yu 1984 [synonym]
Superfm. †Helcionelloidea Wenz 1938
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Fm. †Carinopeltidae Parkhaev 2013
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G. †Carinopelta Parkhaev 2013
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†Carinopelta carinata Parkhaev 2001
Invalid names: Igarkiella Vasil’yeva 1998 [replaced]
G. †Protoconus Yü 1979
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†Protoconus crestatus Yü 1979
Invalid names: Patellella Vassiljeva 1990 [synonym]
G. †Squamiconus Vassiljeva 1990
Invalid names: Procarinariidae Wenz 1938 [empty]
Fm. †Pelagiellidae Knight 1952
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G. †Pelagiella Matthew 1895
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†Pelagiella adunca He et al. 1984
†Pelagiella asymmetrica Ermak and Pelman 1986
†Pelagiella atlantoides Mathews 1894
†Pelagiella atlasensis Geyer 1986
†Pelagiella bentica Ermak and Pelman 1986
†Pelagiella broeggeri Grönwall 1902
†Pelagiella corinthiana Runnegar and Jell 1976
†Pelagiella crassa Geyer 1986
†Pelagiella deltoides Runnegar and Jell 1976
†Pelagiella escayachensis Kobayashi 1937
†Pelagiella exigua Resser and Howell 1938
†Pelagiella lorenzi Kobayashi 1939
†Pelagiella madianensis Zhou and Xiao 1984
†Pelagiella mareki Horný 1964
†Pelagiella nevadense Skovsted 2006
†Pelagiella primaeva Billings 1872
†Pelagiella serpentis Ermak and Pelman 1986
Invalid names: Auriculaspira Zhou and Xiao 1984 [synonym], Cambretina Horný 1964 [synonym], Costipelagiella Horný 1964 [synonym], Protoscaevogyra Kobayashi 1939 [synonym]
Invalid names: Proeccyliopteridae Kobayashi 1962 [synonym], Protoscaevogyridae Kobayashi 1962 [synonym]
Superfm. †Yochelcionelloidea Runnegar and Jell 1976
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Fm. †Rugaeconidae Vassiljeva 1990
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G. †Dorispira Parkhaev and Demidenko 2010
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†Dorispira aliciae Brock 1998
†Dorispira aperta Orlowski 1968
†Dorispira arguta Resser 1939
†Dorispira burlingi Resser 1939
†Dorispira comma Geyer 1986
†Dorispira holmdalense Peel 1988
†Dorispira lauta Yü 1979
†Dorispira merino Runnegar and Jell 1976
†Dorispira pearylandica Peel 1988
†Dorispira penecyrano Runnegar and Jell 1976
†Dorispira pocatelloensis Geyer 1994
†Dorispira terraustralis Runnegar and Jell 1976
G. †Xianfengella He and Yang 1982
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†Xianfengella prima He and Yang 1982
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Invalid names: Scutatestomaconus latus Chen and Zhang 1980 [synonym]
†Xianfengella yatesi Parkhaev 2001
Invalid names: Obscurania Vassiljeva 1990 [synonym], Rugaeconus Vassiljeva 1990 [synonym], Scutatestomaconus [synonym]
Fm. †Trenellidae Parkhaev 2001
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G. †Mackinnonia Bengtson et al. 1990
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†Mackinnonia anabarica Parkhaev 2005
†Mackinnonia corrugata Bengtson et al. 1990
G. †Parailsanella Voronova et al. 1987
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†Parailsanella acris Voronova et al. 1987
†Parailsanella inpocera Zhegallo 1983
†Parailsanella lata Parkhaev 2001
†Parailsanella murenica Esakova and Zhegallo 1996
†Parailsanella sayutinae Parkhaev 2004
Invalid names: Isitella Missarzhevsky 1989 [synonym]
G. †Udzhella Vassiljeva 1990
Fm. †Yochelcionellidae Runnegar and Jell 1976
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G. †Enigmaconus MacKinnon 1985
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†Enigmaconus parvus MacKinnon 1985
†Enigmaconus pyramidalis Kouchinsky et al. 2013
G. †Eotebenna Runnegar and Jell 1976
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†Eotebenna arctica Peel 1989
†Eotebenna papilio Runnegar and Jell 1976
†Eotebenna pontifex Runnegar and Jell 1976
†Eotebenna recta Missarzhevsky and Mambetov 1981
†Eotebenna viviannae Peel 1991
G. †Janospira
G. †Yochelcionella Runnegar and Pojeta 1974
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†Yochelcionella aichalica Schabanov et al. 1987
†Yochelcionella americana Runnegar and Pojeta 1980
†Yochelcionella angustiplicata Hinz-Schallreuter 1997
†Yochelcionella chinensis Pei 1985
†Yochelcionella crassa Esakova and Zhegallo 1996
†Yochelcionella cyrano Runnegar and Pojeta 1974
†Yochelcionella daleki Runnegar and Jell 1976
†Yochelcionella erecta Walcott 1891
†Yochelcionella gracilis Atkins and Peel 2004
†Yochelcionella greenlandica Atkins and Peel 2004
†Yochelcionella ostentata Runnegar and Jell 1976
†Yochelcionella pelmani Vassiljeva 1990
†Yochelcionella saginata Vendrasco et al. 2010
†Yochelcionella snorkorum Vendrasco et al. 2010
†Yochelcionella stylifera Missarzhevsky and Mambetov 1981
Invalid names: Runnegarella Parkhaev 2002 [synonym]
Invalid names: Enigmaconidae MacKinnon 1985 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Hendy et al. 2009 | |||||
Age range: base of the Jinnigian to the top of the Trempealeauan or 538.80000 to 486.85000 Ma
Collections (376 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Jinnigian | China (Yunnan) | Protoconus crestatus, Purella elegans (201551) | |
| Nemakit-Daldynian | Russian Federation (Khabarovsk Krai) | Isitiella inpocera (50418) | |
| Nemakit-Daldynian | Poland | Pelagiella sp. (72260) | |
| Nemakit-Daldynian | China (Yunnan) | Xianfengella prima (171896) | |
| Placentian | USA (Massachusetts) | Pelagiella sp. (56833 56837 56853) | |
| Early/Lower Cambrian | China (Shaanxi) | Yochelcionella chinensis (86613) | |
| Early/Lower Cambrian | Australia (South Australia) | Pelagiella subangulata (215353 215354 215369 215377 215443 215444 215446 215447 215448 215449 215450 215451 215452 275191 275203) Tribelopoma amygdala (190396 190397 190398 190399 190401) | |
| Cambrian | USA (New York) | Pelagiella sp. (254) | |
| Meishucunian - Nemakit-Daldynian | China (Yunnan) | Tubatoconus yuluensis (87093) | |
| Meishucunian | China (Anhui) | Protoconus sp. (107772) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Dresbachian | USA (Indiana) | Pelagiella sp. (232) | |
| Franconian | USA (Idaho) | Pelagiella sp. (251) | |
| Franconian | USA (Wisconsin) | Pelagiella sp. (248 267) | |
| Franconian | USA (Montana) | Pelagiella primordialis (249) | |
| Furongian | Poland | Latouchella aperta (72275) | |
| Furongian | Svalbard and Jan Mayen | Platyceras primaevum (212582) | |
| Furongian - Tremadoc | Poland | Latouchella aperta (72274) | |
| Trempealeauan | USA (Texas) | Anconochilus barnesi (156381) Owenella sp. (216013 216014 216018) | |
| Trempealeauan | USA (Wisconsin) | Owenella antiquata (93598) Owenella sp. (255) | |
| Trempealeauan | USA (Utah) | Owenella sp. (259) | |