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Sachitida
Taxonomy
Sachitida was named by He (1980). It is not extant.
It was reranked as the unranked clade Sachitida by Vinther et al. (2017).
It was assigned to Coeloscleritophora by Sepkoski (2002); to Diplacophora by Parkhaev and Demidenko (2010); and to Mollusca by Vinther et al. (2017) and Kouchinsky et al. (2017).
It was reranked as the unranked clade Sachitida by Vinther et al. (2017).
It was assigned to Coeloscleritophora by Sepkoski (2002); to Diplacophora by Parkhaev and Demidenko (2010); and to Mollusca by Vinther et al. (2017) and Kouchinsky et al. (2017).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1980 | Sachitida He |
| 1981 | Thambetolepida Jell |
| 2002 | Sachitida Sepkoski |
| 2007 | Halwaxida Conway Morris and Caron p. 1258 |
| 2010 | Sachitida Parkhaev and Demidenko p. 955 |
| 2017 | Sachitida Kouchinsky et al. p. 373 |
| 2017 | Sachitida Vinther 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.
Unr. †Sachitida He 1980
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Cl. Aculifera Blumrich 1891
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Fm. †Halkieriidae Poulsen 1967
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Subfm. †Halkieriinae Poulson 1967
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G. †Eohalobia Luo et al. 1982
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Invalid names: Meishucunchiton Yü 1987 [synonym], Parapunctella Luo and Jiang 1982 [synonym], Zeugites Qian et al. 1979 [synonym]
G. †Halkieria Poulsen 1967
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†Halkieria amorphe Meshkova 1974
†Halkieria curvativa Missarzhevsky and Mambetov 1981
†Halkieria denlanatiformis Missarzhevsky and Mambetov 1981
†Halkieria evangelista Conway Morris and Peel 1995
†Halkieria mira Qian and Xiao 1984
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Invalid names: Sachites glossoides Gao et al. 1985 [synonym], Sachites liratus Gao et al. 1985 [synonym]
†Halkieria obliqua Poulsen 1967
†Halkieria sacciformis Meshkova 1969
†Halkieria sthenobasis Luo and Jiang 1982
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Invalid names: Halkieria toruliformis Wang 1994 [synonym]
†Halkieria stonei Landing et al. 1989
†Halkieria trianguliformis Missarzhevsky and Mambetov 1981
†Halkieria undulatus Wang 1994
†Halkieria wangi Parkhaev and Demidenko 2010
Invalid names: Acrosquama Qian and Xiao 1984 [synonym], Acuminachites Qian and Yin 1984 [synonym], Dactyosachites He 1981 [synonym], Microsachites He 1981 [synonym]
G. †Ocruranus Liu 1979
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†Ocruranus finial Liu 1979
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Invalid names: Chengjiangoconus trilophodes He and Yang 1982 [synonym], Dengyingoconus trianguliformis Xing et al. 1984 [synonym], Liorichita sublaevis Liu 1987 [synonym], Ocruranus diandongensis Luo et al. 1982 [synonym], Ocruranus gryphus Liu 1987 [synonym], Ocruranus regularis Liu 1987 [synonym], Parascenella typica Chen and Xiong 1984 [synonym], Pileconus veloides Jiang 1980 [synonym], Postestephaconus tentes Jiang 1980 [synonym], Stephaconus subpentaedrus Jiang 1980 [synonym], Stoliconus usitatus Jiang 1980 [synonym], Stoliconus vemeres Jiang 1980 [synonym]
†Ocruranus kangerluk Peel 2021
†Ocruranus modestus Yü 1987
†Ocruranus septentrionalis Peel and Skovsted 2005
†Ocruranus trulliformis Jiang 1980
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Invalid names: Ginella yichangensis Chen and Zhang 1980 [synonym]
Invalid names: Chengjiangoconus He and Yang 1982 [synonym], Cremnodinotus Liu 1987 [synonym], Dengyingoconus [synonym], Hanshuiella Yue and Xing 1984 [synonym], Jiangiconus Starobogatov and Moskalev 1987 [synonym], Liorichita Liu 1987 [synonym], Parascenella Chen and Xiong 1984 [synonym], Pileconus [synonym], Postephaconus Jiang 1980 [synonym], Postestephaconus Jiang 1980 [synonym], Runnegarochiton Yü 1987 [synonym], Stephaconus Jiang 1980 [synonym], Stoliconus Jiang 1980 [synonym], Yuanjiapingella Yue 1984 [synonym]
G. †Sinosachites He 1980
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†Sinosachites flabelliformis He 1980
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Invalid names: Sinosachites triangularis Yin and He 1980 [synonym]
Invalid names: Thambetolepis [synonym]
G. †Adversella
G. †Carubacgutes
G. †Hippopharangites Bengtson 1990
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†Hippopharangites dailyi Bengston 1990
†Hippopharangites groenlandicus Peel 2021
G. †Miriella
Fm. †Siphogonuchitidae Qian 1977
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G. †Drepanochites
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†Drepanochites dilatatus Luo et al. 1982
Invalid names: Drepanochites deminatus Jiang 1980 [nomen nudum]
G. †Lomasulcachites
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†Lomasulcachites macrus Luo et al. 1982
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Invalid names: Heterosculpotheca phaneres Luo et al. 1982 [synonym], Siphogonuchites spinatus Xing 1984 [synonym]
G. †Lopochites Qian 1977
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G. †Quadrosiphogonuchites Chen 1982
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Invalid names: Paraconularoides He 1984 [synonym], Paranabarites Jiang 1982 [synonym]
G. †Siphogonuchites Qian 1977
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†Siphogonuchites bisulcatus Qian and Yin 1984
†Siphogonuchites equilateralis Qian and Yin 1984
†Siphogonuchites intermedius Qian 1977
†Siphogonuchites pusilliformis Qian 1977
†Siphogonuchites subremualis Bokova 1985
†Siphogonuchites triangularis Qian 1977
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Invalid names: Palaeosulcachites biformis Qian 1977 [synonym], Palaeosulcachites irregularis Qian 1977 [synonym], Palaeosulcachites minus Qian 1984 [synonym], Palaeosulcachites shipaiensis Qian 1984 [synonym], Trapezochites minuta Jiang 1980 [synonym]
Invalid names: Palaeosulcachites Qian 1977 [synonym], Sachitelus intercostatus Jiang 1980 [nomen nudum], Trapezochites Qian and Yiang 1982 [synonym], Trapezochites chordoides Jiang 1980 [nomen nudum]
G. †Tianzhushania Qian et al. 1979
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†Tianzhushania longa Qian et al. 1979
†Tianzhushania obesa Qian et al. 1979
Invalid names: Halkierioidea Poulsen 1967 [empty], Halwaxida Conway Morris and Caron 2007 [synonym], Siphogonuchitoidea Qian 1977 [empty], Thambetolepida Jell 1981 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Y. Parkhaev and Y. Demidenko 2010 | "Dorsum bears sclerites of two types, i.e., two relatively large low-conical shell plates on anterior and posterior parts of body (posterior or both plates can be reduced), and numerous scaly sclerites on rest of surface." |