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Permoperna
Taxonomy
Waagenoperna (Permoperna) was named by Nakazawa and Newell (1968).
It was reranked as Permoperna by Fang (1982), Fang (1987), Fang et al. (2009).
It was assigned to Bakevelliidae by Fang (1982), Fang (1987), Fang et al. (2009); and to Waagenoperna by Nakazawa and Newell (1968), Ros-Franch et al. (2014).
It was reranked as Permoperna by Fang (1982), Fang (1987), Fang et al. (2009).
It was assigned to Bakevelliidae by Fang (1982), Fang (1987), Fang et al. (2009); and to Waagenoperna by Nakazawa and Newell (1968), Ros-Franch et al. (2014).
Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Waagenoperna (Permoperna) Nakazawa and Newell p. 61 |
| 1982 | Permoperna Fang |
| 1987 | Permoperna Fang p. 369 |
| 2009 | Permoperna Fang et al. |
| 2014 | Waagenoperna (Permoperna) Ros-Franch 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.
G. †Permoperna Nakazawa and Newell 1968
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†Permoperna trapezoidalis Kayser 1883
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Invalid names: Permoperna sinensis Frech 1911 [synonym], Waagenoperna (Permoperna) hayamii Nakazawa and Newell 1968 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 14 | 21.2 | 7.25 | 53.3 | 18.8 | 13.1 |
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| Source: f = family, superf = superfamily, o = order, c = class | |||||
| References: Aberhan et al. 2004, Sanchez Roig 1926, Kiessling 2004 | |||||
Age range: base of the Artinskian to the top of the Changhsingian or 290.10000 to 251.90200 Ma
Collections (35 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | Japan (Iwate) | Waagenoperna hayamii (182561) | |
| Roadian | Japan | Liebea sinensis (109636) | |
| Wordian | Japan | Waagenoperna hayamii (114492 114493 114494) | |
| Capitanian | China (Fujian) | P. sinensis (102116) | |
| Capitanian | Japan | Liebea sinensis (109637) | |
| Capitanian | Russian Federation (Khabarovsk) | Waagenoperna hayamii (82997) | |
| Capitanian | China (Guangdong) | P. trapezoidalis (113864) | |
| Wuchiapingian | China (Guizhou) | P. sinensis (112002) | |
| Wuchiapingian | Greece | P. sp. (64171) | |
| Wuchiapingian | China (Hunan) | P. trapezoidalis (95695 97261 107816 107820 107826) Waagenoperna sinensis (121731) | |
| Lopingian | China (Jiangxi) | Myalina trapezoidalis, Liebea sinensis (109628) P. sinensis (102142) | |
| Lopingian | China (Jiangsu) | P. sinensis (102119) | |
| Changhsingian | China (Hunan) | Waagenoperna sinensis (123620) | |
| Changhsingian | China (Guangxi) | Waagenoperna sinensis (149205 149208) | |
| Changhsingian | China (Chongqing) | P. trapezoidalis (94984 94985) | |
| Changhsingian | China (Fujian) | P. sp. (95489 95512) P. trapezoidalis (95481 111732) | |
| Changhsingian | China (Guizhou) | Isognomon sinensis (108551) Liebea indica (98029) P. trapezoidalis (117464 117465 117481) | |
| Changhsingian | China (Anhui) | P. sinensis (102125) |