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Palaeomutela (Palaeanodonta)
Taxonomy
Palaeanodonta was named by Amalitsky (1895).
It was reranked as Palaeomutela (Palaeanodonta) by Silantiev and Carter (2015).
It was assigned to Anthracosiidae by Amalitsky (1895), Bradshaw (1984); to Palaeanodontinae by Bouchet et al. (2010); and to Palaeomutela by Silantiev and Carter (2015).
It was reranked as Palaeomutela (Palaeanodonta) by Silantiev and Carter (2015).
It was assigned to Anthracosiidae by Amalitsky (1895), Bradshaw (1984); to Palaeanodontinae by Bouchet et al. (2010); and to Palaeomutela by Silantiev and Carter (2015).
Subtaxa
Species lacking formal opinion data
Palaeanodonta novoculchumica, Palaeanodonta trapezoidalis, Palaeomutela attenuata, Palaeomutela castor, Palaeomutela doratioformis, Palaeomutela extensiva, Palaeomutela longissima, Palaeomutela marposadica, Palaeomutela olgae, Palaeomutela pseudoumbonata, Palaeomutela rectodorsala, Palaeomutela rhomboidea, Palaeomutela semilunulata, Palaeomutela solenoides, Palaeomutela tschuvashica, Palaeomutela verneuili, Palaeomutela vjatkensis
Synonymy list
| Year | Name and author |
|---|---|
| 1895 | Palaeanodonta Amalitsky p. 341 |
| 1984 | Palaeanodonta Bradshaw |
| 2010 | Palaeanodonta Bouchet et al. |
| 2015 | Palaeomutela (Palaeanodonta) Silantiev and Carter p. 1137 |
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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.
Subg. †Palaeomutela (Palaeanodonta) Amalitsky 1895
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†Palaeanodonta dubia Amalitsky 1892
†Palaeanodonta fischeri Amalitsky 1892
†Palaeanodonta fuyuanensis Guo 1985
†Palaeanodonta pseudolongissima Khalfin 1950
†Palaeanodonta yunnanensis Guo 1985
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| V. V. Silantiev and J. G. Carter 2015 | Thin walled shells (less than 1.5 mm thick) with reduced pseudotaxodont hinge apparatus; hinge area narrow, consisting of either two branches (anterior and posterior) or only one reduced posterior branch. Anterior branch with 1–5 tubercu late teeth. Posterior branch with 1–5 dental plates or tubercles. Distal part of posterior branch occasionally with relatively small subhorizontal plates resembling lateral teeth of heterodont hinges. Number of teeth in branches of hinge area occasionally decreasing down to complete disappearance. |
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| height | 3 | 24.6 | 23.2 | 27.3 | 23.6 | 2.26 | |
| valve height | 13 | 12.5 | 6.70 | 21.0 | 12.7 | 3.94 |
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| Source: g = genus, c = class | |||||
| References: Silantiev and Carter 2015, Aberhan et al. 2004 | |||||
Age range: base of the Kungurian to the top of the Changhsingian or 283.30000 to 251.90200 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Permian | Antarctica | Palaeanodonta fischeri (200131) | |
| Kungurian | USA (Texas) | Palaeanodonta sp. (67737) | |
| Capitanian | Falkland Islands (Malvinas) | Palaeanodonta dubia (136877) | |
| Capitanian - Lopingian | Zambia | Palaeanodonta sp. (208781) | |
| Wuchiapingian | China (Qinghai) | Palaeanodonta pseudolongissima (88259) | |
| Wuchiapingian | Russian Federation (Vologda) | Palaeanodonta novoculchumica, Palaeanodonta trapezoidalis (104754) | |
| Changhsingian | China (Yunnan) | Palaeanodonta fuyuanensis, Palaeanodonta yunnanensis (98543) |