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Orthis
Taxonomy
Orthis was named by Dalman (1828).
It was reranked as Dalmanella (Orthis) by Cleland (1900).
It was assigned to Dalmanella by Cleland (1900); to Orthinae by Phleger (1933), Rubel (1961), Jaanusson and Bassett (1993); to Orthidae by Raymond (1911), Oraspold (1959), Williams et al. (2000); and to Orthida by Sepkoski (2002).
It was reranked as Dalmanella (Orthis) by Cleland (1900).
It was assigned to Dalmanella by Cleland (1900); to Orthinae by Phleger (1933), Rubel (1961), Jaanusson and Bassett (1993); to Orthidae by Raymond (1911), Oraspold (1959), Williams et al. (2000); and to Orthida by Sepkoski (2002).
Species
O. (Finkelnburgia), O. (Orusia), O. acuminata, O. australis, O. berthoisi, O. biforata, O. biloba, O. bilobata, O. callactis, O. christianae, O. cypha, O. davidsoni, O. expansa, O. gwalia, O. intercostata, O. kreklingensis, O. laticostata, O. perveta, O. piger, O. reversa, O. ribeiroi, O. spinigera, O. subalata, O. subvulvaria, O. testudinaria, O. tulliensis
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1828 | Orthis Dalman |
| 1900 | Dalmanella (Orthis) Cleland |
| 1911 | Orthis Raymond |
| 1933 | Orthis Phleger, Jr. p. 7 |
| 1959 | Orthis Oraspold |
| 1961 | Orthis Rubel |
| 1993 | Orthis Jaanusson and Bassett |
| 2000 | Orthis Williams et al. p. 724 |
| 2002 | Orthis Sepkoski |
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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. †Orthis Dalman 1828
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Subg. †Orthis (Finkelnburgia) Walcott 1905
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†Orthis (Finkelnburgia) osceola Walcott 1905
†Orthis (Finkelnburgia) osceola corrugata Walcott 1905
†Orthis acuminata Billings 1859
†Orthis australis M'Coy 1847
†Orthis berthoisi Davidson 1869
†Orthis biforata Nicholson 1875
†Orthis biforata reversata Foerste 1885
†Orthis biloba Linnaeus 1758
†Orthis bilobata Portlock 1843
†Orthis callactis Dalman 1827
†Orthis christianae Kjerulf 1865
†Orthis cypha James 1874
†Orthis davidsoni de Verneuil 1845
†Orthis expansa de Sowerby and Murchison 1839
†Orthis gwalia Bancroft 1949
†Orthis intercostata de Sowerby and Murchison 1839
†Orthis kreklingensis Opik 1939
†Orthis laticostata James 1871
†Orthis perveta Conrad 1843
†Orthis piger Billings 1859
†Orthis reversa McCoy 1862
†Orthis ribeiroi Sharpe 1853
†Orthis spinigera M'Coy 1847
†Orthis subalata Ulrich and Cooper 1938
†Orthis subvulvaria Asselberghs 1913
†Orthis testudinaria Dalman 1828
†Orthis tulliensis Vanuxem 1842
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 6.00 |
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004, Hendy 2009 | |||||
Age range: base of the Dawan to the top of the Early/Lower Bathonian or 478.80000 to 165.30000 Ma
Collections (254 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ibexian | USA (New York) | O. sp. (64618) | |
| Tremadoc | China (Sichuan) | O. sp. (7681) | |
| Tremadoc | China (YunNan) | O. sp. (7736) | |
| Tremadoc | China (Hunan and Hubei) | O. sp. (7719 7720) | |
| Tremadoc | China (Hubei) | O. sp. (7728) | |
| Tremadoc | China (JiangSu) | O. sp. (7879) | |
| Tremadoc | China (HeBei) | O. sp. (7958 7985) | |
| Tremadoc | USA (Vermont) | O. sp. (277) | |
| Dawan | China (YunNan) | O. sp. (7745 7746) | |
| Dawan | China (Sichuan) | O. sp. (7661) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Late/Upper Givetian | Germany (Rhineland-Palatinate) | O. sacculus (275563) | |
| Frasnian | Colombia (Boyaca) | O. sp. (36012) | |
| Asbian | Australia (New South Wales) | O. spinigera (133349) | |
| Gzhelian - Artinskian | Bolivia | O. resupinata (120479) | |
| Asselian | Slovenia | O. sp. (129658) | |
| Wordian | Laos | O. sp. (125044) | |
| Wuchiapingian | Pakistan | O. sp. (125909 126278 127025) | |
| Lopingian | India | O. sp. (117558) | |
| Wuchiapingian - Changhsingian | Pakistan | O. sp. (126751) | |
| Early/Lower Bathonian | France | O. sp. (38741) | |