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Hypergonia
Taxonomy
Murchisonia (Hypergonia) was named by Donald (1892) [Sepkoski's age data: C Tour P Guad-l Sepkoski's reference number: 896,1205.].
It was Stegocoelia (Hypergonia) by Knight et al. (1960); it was reranked as Hypergonia by Longstaff (1926), Bandel (2002), Sepkoski (2002) and Wagner (2023).
It was assigned to Murchisonia by Donald (1892); to Murchisoniidae by Longstaff (1926); to Stegocoelia by Knight et al. (1960); to Archaeogastropoda by Sepkoski (2002); and to Orthonemidae by Bandel (2002) and Wagner (2023).
It was Stegocoelia (Hypergonia) by Knight et al. (1960); it was reranked as Hypergonia by Longstaff (1926), Bandel (2002), Sepkoski (2002) and Wagner (2023).
It was assigned to Murchisonia by Donald (1892); to Murchisoniidae by Longstaff (1926); to Stegocoelia by Knight et al. (1960); to Archaeogastropoda by Sepkoski (2002); and to Orthonemidae by Bandel (2002) and Wagner (2023).
Subtaxa
H. agraciada, H. attenuata, H. baldwinensis, H. deplanata, H. elongata, H. hoffmani, H. illinoiensis, H. kirkbyi, H. marvinwelleri, H. mcoyi, H. percarinata, H. percostata, H. prolixa, H. quadricarinata (syn. Stegocoelia (Hypergonia) pentonensis, Donaldina tenuis), H. tatei, H. tenuis, H. turritella, H. vermicula, H. youngiana, Murchisonia (Hypergonia) fastigiata, Stegocoelia (Hypergonia) acuminata, Stegocoelia (Hypergonia) cincta (syn. Stegocoelia (Hypergonia) acuticarinata), Stegocoelia (Hypergonia) jonathanensis, Stegocoelia (Hypergonia) korobkovi
Synonymy list
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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.
G. †Hypergonia Donald 1892
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†Hypergonia agraciada Kues and Batten 2001
†Hypergonia attenuata Hall 1856
†Hypergonia baldwinensis Thein and Nitecki 1974
†Hypergonia deplanata Donald 1895
†Hypergonia elongata Yoo 1988
†Hypergonia hoffmani Kues and Batten 2001
†Hypergonia illinoiensis Weller 1916
†Hypergonia kirkbyi Donald 1892
†Hypergonia marvinwelleri Thein and Nitecki 1974
†Hypergonia mcoyi Donald 1895
†Hypergonia percarinata Longstaff 1926
†Hypergonia percostata Girty 1939
†Hypergonia prolixa White and Whitfield 1862
†Hypergonia quadricarinata M'Coy 1844
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Invalid names: Donaldina tenuis de Koninck 1883 [synonym], Stegocoelia (Hypergonia) pentonensis Donald 1892 [synonym]
†Hypergonia tatei Donald 1892
†Hypergonia tenuis Yoo 1988
†Hypergonia turritella Hall 1856
†Hypergonia vermicula Hall 1856
†Hypergonia youngiana Donald 1895
†Murchisonia (Hypergonia) fastigiata Donald 1895
†Stegocoelia (Hypergonia) acuminata de Koninck 1883
†Stegocoelia (Hypergonia) cincta Donald 1895
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Invalid names: Stegocoelia (Hypergonia) acuticarinata Longstaff 1926 [synonym]
†Stegocoelia (Hypergonia) jonathanensis Hoare 2004
†Stegocoelia (Hypergonia) korobkovi Licharev 1975
Diagnosis
Reference | Diagnosis | |
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J. D. Longstaff 1926 | Shell of small or medium size. turriculated, and greatly elongated. Whorls numerous, increasing slowly, slightly convex. Ornamentation consisting of foul' threads, the three lower stronger than the uppermost, and nearly equidistant. The sinus is situated between the upper of these three and the finer thread above. Base convex. Aperture subovoid. Columellar lip slightly curved. |
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 2 | 3.74 | 3.50 | 4.00 | 3.75 | 0.354 |
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Source: c = class | |||||
Reference: Kiessling 2004 |
Age range: base of the Tournaisian to the top of the Wuchiapingian or 358.90000 to 254.17000 Ma
Collections (43 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Kinderhookian | USA (Iowa) | Stegocoelia percarinata (49823 49824 49825) | |
Tournaisian | Australia (New South Wales) | Stegocoelia elongata (43904 44080 44143) Stegocoelia tenuis, Stegocoelia elongata (44088 44159 44160) | |
Ivorian | Belgium (Namur) | Murchisonia acuminata (37243) | |
Visean | Australia (New South Wales) | Stegocoelia sp. A, Stegocoelia sp. B (44144) | |
Arundian | Poland (Swietokrzyskie) | Stegocoelia kirkbyi (60116) | |
Meramecian | USA (Indiana) | Murchisonia attenuata, Murchisonia turritella, Murchisonia vermicula (129910) Murchisonia turritella, Murchisonia vermicula (129930) Murchisonia vermicula (129912) | |
Chesterian - Brigantian | USA (Ohio) | Stegocoelia jonathanensis (85368) | |
Chesterian | USA (Ohio) | Murchisonia vermicula (128005) | |
Chesterian | USA (Kentucky) | Aclisina marvinwelleri (59823) | |
Chesterian | USA (Illinois) | Aclisina marvinwelleri (59826) Solenospira illinoiensis (68188) Stegocoelia baldwinensis (58998) | |
Brigantian | United Kingdom (Scotland) | Murchisonia cincta, Murchisonia youngiana, Murchisonia deplanata, Murchisonia mcoyi (155580) | |
Brigantian | Poland (Malopolskie) | Stegocoelia sp. (101993) | |
Brigantian | United Kingdom (England) | Murchisonia fastigiata (155620) Stegocoelia sp., Stegocoelia percarinata, Stegocoelia kirkbyi, Stegocoelia cincta, Stegocoelia quadricarinata, Stegocoelia acuminata (57131) | |
Serpukhovian | USA (Oklahoma) | Donaldina tenuis, Murchisonia tatei (5611) | |
Arnsbergian | United Kingdom (Scotland) | Murchisonia deplanata (155621) | |
Arnsbergian | China (Ningxia) | Stegocoelia kirkbyi (671) | |
Morrowan | USA (Texas) | Stegocoelia percostata (79966) | |
Kashirian - Myachkovian | USA (New mexico) | Stegocoelia percostata (46548) | |
Desmoinesian | USA (New Mexico) | Stegocoelia percostata, Stegocoelia agraciada, Stegocoelia hoffmani (46536) | |
Gzhelian | USA (New Mexico) | Stegocoelia percostata (156716) Stenocoelia percostata (160176 160177 160178) | |
Virgilian | USA (New Mexico) | H. n. sp. (146819 146828) Stegocoelia percostata (156695 156709 156713 156715) | |
Wuchiapingian | USA (Wyoming) | Stegocoelia percostata (61950) Stegocoelia sp. (61936) |