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Stegocoelia
Taxonomy
Murchisonia (Stegocoelia) was named by Donald (1889) [Sepkoski's age data: D Emsi P Djhu Sepkoski's reference number: 109,797,1004].
It was reranked as Stegocoelia by Knight et al. (1960), Nützel and Bandel (2000), Pan and Erwin (2002), Bandel (2002), Sepkoski (2002), Nützel and Pan (2005), Mazaev (2011), Nützel and Ketwetsuriya (2016), Ketwetsuriya et al. (2020).
It was assigned to Murchisonia by Donald (1889); to Goniasmidae by Nützel and Bandel (2000); to Archaeogastropoda by Sepkoski (2002); to Orthonemidae by Bandel (2002); to Murchisoniidae by Knight et al. (1960), Pan and Erwin (2002); to Orthonematidae by Mazaev (2011); to Goniasmatinae by Nützel and Pan (2005), Nützel and Ketwetsuriya (2016); and to Goniasmatidae by Ketwetsuriya et al. (2020).
It was reranked as Stegocoelia by Knight et al. (1960), Nützel and Bandel (2000), Pan and Erwin (2002), Bandel (2002), Sepkoski (2002), Nützel and Pan (2005), Mazaev (2011), Nützel and Ketwetsuriya (2016), Ketwetsuriya et al. (2020).
It was assigned to Murchisonia by Donald (1889); to Goniasmidae by Nützel and Bandel (2000); to Archaeogastropoda by Sepkoski (2002); to Orthonemidae by Bandel (2002); to Murchisoniidae by Knight et al. (1960), Pan and Erwin (2002); to Orthonematidae by Mazaev (2011); to Goniasmatinae by Nützel and Pan (2005), Nützel and Ketwetsuriya (2016); and to Goniasmatidae by Ketwetsuriya et al. (2020).
Subtaxa
S. (Stegocoelia), S. abscisa, S. acuta, S. acutiformis, S. agraciada, S. akasakaensis, S. alta (syn. S. procera, S. altiformis, S. acris), S. arta, S. berestovensis, S. centrosinuata, S. compacta, S. gzheliensis, S. hoffmani, S. kentuckiensis, S. klyazmaensis, S. knighti (syn. S. compactiformis, S. rara), S. korobcheevoensis, S. laschmaensis, S. longissima (syn. Hypergonia gracilis), S. nerinaeformis, S. nodosa, S. okaensis, S. okawensis, S. quadricincta, S. quadricostata, S. quinquecostata, S. samaraensis, S. smithiana, S. turabievoensis, S. variabilis
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1889 | Murchisonia (Stegocoelia) Donald p. 623 |
| 1960 | Stegocoelia Knight et al. p. 293 |
| 2000 | Stegocoelia Nützel and Bandel |
| 2002 | Stegocoelia Bandel p. 100 |
| 2002 | Stegocoelia Pan and Erwin p. 19 |
| 2002 | Stegocoelia Sepkoski |
| 2005 | Stegocoelia Nützel and Pan p. 1176 |
| 2011 | Stegocoelia Mazaev p. 1562 |
| 2016 | Stegocoelia Nützel and Ketwetsuriya p. 504 |
| 2020 | Stegocoelia Ketwetsuriya et al. p. 66 |
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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. †Stegocoelia Donald 1889
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Subg. †Stegocoelia (Stegocoelia) Donald 1889
†Stegocoelia abscisa Mazaev 2019
†Stegocoelia acuta Mazaev 2001
†Stegocoelia acutiformis Mazaev 2001
†Stegocoelia agraciada Kues and Batten 2001
†Stegocoelia akasakaensis Nützel and Nakazawa 2012
†Stegocoelia alta Licharev 1975
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Invalid names: Stegocoelia acris Licharev 1975 [synonym], Stegocoelia altiformis Licharev 1975 [synonym], Stegocoelia procera Licharev 1975 [synonym]
†Stegocoelia arta Mazaev 2019
†Stegocoelia berestovensis Zernetskaya 1983
†Stegocoelia centrosinuata Ketwetsuriya et al. 2020
†Stegocoelia compacta Donald 1889
†Stegocoelia gzheliensis Mazaev 2001
†Stegocoelia hoffmani Kues and Batten 2001
†Stegocoelia kentuckiensis Thein and Nitecki 1974
†Stegocoelia klyazmaensis Mazaev 2001
†Stegocoelia knighti Licharev 1975
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Invalid names: Stegocoelia compactiformis Licharev 1975 [synonym], Stegocoelia rara Licharev 1975 [synonym]
†Stegocoelia korobcheevoensis Mazaev 2001
†Stegocoelia laschmaensis Mazaev 2001
†Stegocoelia nerinaeformis Massa et al. 1974
†Stegocoelia nodosa Yoo 1988
†Stegocoelia okaensis Mazaev 2001
†Stegocoelia okawensis Thein and Nitecki 1974
†Stegocoelia quadricincta Winchell 1863
†Stegocoelia quadricostata Chronic 1952
†Stegocoelia quinquecostata Yin 1932
†Stegocoelia samaraensis Mazaev 2020
†Stegocoelia smithiana Donald 1895
†Stegocoelia turabievoensis Mazaev 2001
†Stegocoelia variabilis Donald 1895
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. G. Donald 1889 | Whorls angular, keeled ; sinus wide, situated on the posterior part of the whorl above the angle, umbilicated when young; inner lip reflected on the columella and forming a callosity round the base of the pillar, covering the umbilicus in adult specimens. |
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 9 | 4.19 | 1.90 | 14.7 | 3.00 | 5.06 | |
| shell diameter | 9 | 1.37 | 0.800 | 5.70 | 1.10 | 1.76 |
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| Reference: Kiessling 2004 | |||||
Age range: base of the Eifelian to the top of the Wuchiapingian or 393.47000 to 254.14000 Ma
Collections (52 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Eifelian | USA (Nevada) | S. sp. (3826) | |
| Famennian | USA (Iowa) | Murchisonia quadricincta (146537) | |
| Late/Upper Famennian | United Kingdom (England) | Aclisina longissima (38143) | |
| Hastarian | Australia (New South Wales) | S. nodosa (43901) | |
| Tournaisian | Australia (New South Wales) | S. nodosa (43904 44088 44158 44159 44160 44161) | |
| Meramecian | USA (Nevada) | S. sp. A, S. sp. B, S. sp. (62674) | |
| Brigantian | United Kingdom (Scotland) | S. sp. A, Murchisonia smithiana, Murchisonia variabilis (155580) | |
| Brigantian | USA (Alabama) | S. sp. (6764) | |
| Brigantian | United Kingdom (England) | Hypergonia gracilis (73424) S. compacta (57131) | |
| Chesterian | USA (Illinois) | S. okawensis (58998 59826) | |
| Chesterian | USA (Kentucky) | S. kentuckiensis (59823) | |
| Moscovian | Libya | S. nerinaeformis (177535) | |
| Moscovian | Russian Federation | S. okaensis (121038) | |
| Desmoinesian | USA (Oklahoma) | S. sp. (111 112) | |
| Myachkovian | Russian Federation (Chelyabinskaya) | Cyclozyga knighti, S. alta (156080) | |
| Myachkovian | Russian Federation (Moscow) | S. knighti, S. korobcheevoensis (156078) | |
| Myachkovian | Russian Federation (Ryazan) | S. laschmaensis (154865) | |
| Krevyakinian | Russian Federation (Ryazan) | S. knighti, S. okaensis, S. alta (154808) | |
| Dorogomilovian | Russian Federation (Moscow) | S. knighti, S. alta (155816) | |
| Gzhelian - Asselian | China (Hopei) | Solenospira quinquecostata, Solenospira amaena (149177) | |
| Rusavkinian | Russian Federation (Vladimir) | S. acuta (155908) S. okaensis (155909) | |
| Rusavkinian | Russian Federation (Moscow) | S. klyazmaensis, S. gzheliensis, S. knighti (155804) S. turabievoensis, S. okaensis (155803) | |
| Asselian | Russian Federation (Bashkortostan) | S. quinquecostata (204134 220899) S. quinquecostata, S. abscisa (202159) | |
| Sakmarian | Russian Federation | S. samaraensis (205219) | |
| Sakmarian | Russian Federation (Bashkortostan) | S. arta (220898) | |
| Pavlovoposadian | Russian Federation (Moscow) | S. klyazmaensis, S. gzheliensis, S. knighti (155899) | |
| Kungurian | Malaysia (Perak) | S. sp. (62131) | |
| Kungurian | USA (New Mexico) | Stegocoelia indet. (10139) | |
| Roadian | USA (Arizona) | S. quadricostata (39998) | |
| Wordian | USA (Texas) | S. sp. (43550) | |
| Wordian | Thailand (Ratchaburi) | S. sp. 1, S. sp. 2, S. centrosinuata (40954) | |
| Wordian | Thailand | S. sp. 1 (167692 181783) S. sp. 2 (167694) | |
| Capitanian | Japan | S. akasakaensis (109667) | |
| Wuchiapingian | Greece | S. sp. (64172 64173 64174 64175) | |
| Wuchiapingian | Pakistan | Murchisonia quinquecostata (125902) |