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Permoperna trapezoidalis
Taxonomy
Myalina trapezoidalis was named by Kayser (1883). It is a 3D body fossil. Its type locality is Mingshan Coalfield, Loping Area, which is in a Lopingian carbonate limestone in China.
It was recombined as Permoperna trapezoidalis by Fang (1987), Wang (1993), Li (1995).
It was recombined as Permoperna trapezoidalis by Fang (1987), Wang (1993), Li (1995).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1883 | Myalina trapezoidalis Kayser p. 169 figs. Pl 21, figs 1-4 |
| 1911 | Myalina trapezoidalis Frech p. 114 figs. Pl 15, fig 4 |
| 1911 | Liebea sinensis Frech p. 115 figs. Pl 15, figs 1a-d |
| 1968 | Waagenoperna (Permoperna) hayamii Nakazawa and Newell p. 62 figs. Pl 3, figs 9-11 |
| 1977 | Waagenoperna (Permoperna) sinensis Zhang p. 502 figs. Pl 195, fig 8 |
| 1982 | Permoperna sinensis Li et al. p. 314 figs. Pl 120, figs 6-7; pl 121, figs 11-13 |
| 1986 | Waagenoperna (Permoperna) hayamii Kushnar p. 50 figs. Pl 1, figs 3-7 |
| 1987 | Permoperna trapezoidalis Fang p. 369 figs. Pl 8, figs 21-24 |
| 1993 | Permoperna trapezoidalis Wang p. 464 figs. Pl 1, figs 9-11 |
| 1995 | Permoperna trapezoidalis Li p. 360 figs. Pl 1, fig 13 |
| 2009 | Isognomon sinensis Gao 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.
†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 (31 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 | Russian Federation (Khabarovsk) | Waagenoperna hayamii (82997) | |
| Capitanian | Japan | Liebea sinensis (109637) | |
| Capitanian | China (Guangdong) | Permoperna trapezoidalis (113864) | |
| Capitanian | China (Fujian) | Permoperna sinensis (102116) | |
| Wuchiapingian | China (Hunan) | Permoperna trapezoidalis (95695 97261 107816 107820 107826) Waagenoperna sinensis (121731) | |
| Wuchiapingian | China (Guizhou) | Permoperna sinensis (112002) | |
| Lopingian | China (Jiangsu) | Permoperna sinensis (102119) | |
| Lopingian | China (Jiangxi) | Myalina trapezoidalis, Liebea sinensis (109628) Permoperna sinensis (102142) | |
| Changhsingian | China (Guizhou) | Isognomon sinensis (108551) Permoperna trapezoidalis (117464 117465 117481) | |
| Changhsingian | China (Fujian) | Permoperna trapezoidalis (95481 111732) | |
| Changhsingian | China (Chongqing) | Permoperna trapezoidalis (94984 94985) | |
| Changhsingian | China (Hunan) | Waagenoperna sinensis (123620) | |
| Changhsingian | China (Anhui) | Permoperna sinensis (102125) | |
| Changhsingian | China (Guangxi) | Waagenoperna sinensis (149205 149208) |