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Taxonomy
Gervillia ussurica was named by Kiparisova (1938).
It was recombined as Pteria ussurica by Kumagae and Nakazawa (2009), Hofmann et al. (2013) and Hofmann et al. (2015).
It was recombined as Pteria ussurica by Kumagae and Nakazawa (2009), Hofmann et al. (2013) and Hofmann et al. (2015).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Gervillia ussurica Kiparisova |
| 2009 | Pteria ussurica Kumagae and Nakazawa p. 158 figs. 144.6-144.8 |
| 2013 | Pteria ussurica Hofmann et al. p. 864 fig. 8.4 |
| 2015 | Pteria ussurica Hofmann et al. fig. 3A |
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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.
†Pteria ussurica Kiparisova 1938
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 11 | 6.61 | 3.75 | 11.7 | 6.50 | 2.69 |
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| Source: g = genus, f = family, c = class | |||||
| References: Aberhan et al. 2004, Voigt 1973 | |||||
Age range: base of the Changhsingian to the top of the Smithian or 254.17000 to 247.20000 Ma
Collections (104 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | China (Guizhou) | Pteria ussurica (108553) | |
| Changhsingian | Russian Federation (Sakha) | Pteria ussurica (206755) | |
| Changhsingian | China (Sichuan) | Pteria ussurica (95604 95605) | |
| Changhsingian | China (Chongqing) | Pteria ussurica (94989) | |
| Changhsingian - Griesbachian | China (Yunnan) | Pteria ussurica (205963 205964 205965 205966 205967 205968 205969 205970) | |
| Changhsingian - Griesbachian | China (Guizhou) | Pteria ussurica (205986 205987 205988 205989 205992 205993) | |
| Changhsingian - Griesbachian | China (Sichuan) | Pteria ussurica (205974 205975 205976 205977 205978 205979 205980) | |
| Induan | China (Guangxi) | Pteria ussurica (121141) | |
| Induan | China (Zhejiang) | Pteria ussurica (201714) | |
| Early/Lower Triassic | Vietnam (Ha Giang) | Pteria ussurica (201713) | |
| Griesbachian | USA (Montana) | Pteria ussurica (150715 150718 150719 150722) | |
| Griesbachian | China (Sichuan) | Pteria ussurica (89357 89359 89360 89361 89365 95607 98559 117505 123720 123721 205982 205983 205984) | |
| Griesbachian | China (Hubei) | Pteria ussurica (204853 204855) | |
| Griesbachian | USA (Wyoming) | Pteria ussurica (150701 150704 150706 150712) | |
| Griesbachian | China (Guizhou) | Pteria ussurica (85127 111978 112008 112110 112111 112112 151146 151149 205960 205962 205990 205991 205994 205995 205996 205997 205998) | |
| Griesbachian | China (Guangxi) | Pteria ussurica (117512) | |
| Griesbachian | USA (Idaho) | Pteria ussurica (150727) | |
| Griesbachian | Italy | Pteria ussurica (165006 165007 165008 165012 165103) | |
| Griesbachian | China (Yunnan) | Pteria ussurica (112118 112119 112120 112121 112122 205971 205972 205973) | |
| Griesbachian | Russian Federation | Pteria ussurica (90207) | |
| Griesbachian | China (Zhejiang) | Pteria ussurica (105220 105221) | |
| Smithian | Svalbard and Jan Mayen | Pteria ussurica (212571 212572 212573) | |
| Smithian | Japan | Pteria ussurica (115247 115248 115249) | |
| Spathian | Russian Federation (Primorye) | Pteria ussurica (47282 47295) | |
| Dienerian | USA (Wyoming) | Pteria ussurica (150707 150708 150713) | |
| Dienerian | Italy | Pteria ussurica (165024 165119 165126) | |
| Dienerian | Russian Federation | Pteria ussurica (90210 90211) | |
| Dienerian | China (Qinghai) | Pteria ussurica (112812) |