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Towapteria scythica
Taxonomy
Oxytoma scythicum was named by Wirth (1936). It is not extant.
It was misspelled as Towapteria scythicum by Shen et al. (1995); it was recombined as Towapteria scythica by Yang et al. (1986), Broglio Loriga et al. (1986), Pan et al. (2014), Hautmann et al. (2015), Hofmann et al. (2015), Foster et al. (2019).
It was misspelled as Towapteria scythicum by Shen et al. (1995); it was recombined as Towapteria scythica by Yang et al. (1986), Broglio Loriga et al. (1986), Pan et al. (2014), Hautmann et al. (2015), Hofmann et al. (2015), Foster et al. (2019).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Oxytoma scythicum Wirth |
| 1978 | Towapteria scythicum Xu p. 321 figs. Pl 104, fig 34 |
| 1986 | Towapteria scythica Broglio Loriga et al. figs. Pl 2, fig 18 |
| 1986 | Towapteria scythica Yang et al. figs. Pl 1, figs 1,2,7,15 |
| 1995 | Towapteria scythicum Shen et al. fig. 2.1b,2.21,2.22 |
| 2014 | Towapteria scythica Pan et al. p. 145 figs. 5B-D |
| 2015 | Towapteria scythica Hautmann et al. p. 886 fig. 9F |
| 2015 | Towapteria scythica Hofmann et al. fig. 3G |
| 2019 | Towapteria scythica Foster et al. p. 626 fig. 7M,N |
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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.
†Towapteria scythica Wirth 1936
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 4.24 | 3.27 | 5.50 | 4.39 | 1.57 | |
| valve height | 5 | 5.92 | 4.90 | 7.62 | 5.75 | 1.04 |
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| Source: f = family, superf = superfamily, o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004, Sanchez Roig 1926 | |||||
Age range: base of the Changhsingian to the top of the Dienerian or 254.14000 to 249.90000 Ma
Collections (64 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | China (Zhejiang) | Oxytoma scythicum (60533) Towapteria scythica (105215) | |
| Changhsingian | China (Chongqing) | Towapteria scythica (94989) | |
| Changhsingian | Italy | Towapteria scythica (44450) | |
| Griesbachian | China (Zhejiang) | Towapteria scythica (105221) | |
| Griesbachian | Italy | Towapteria scythica (88658 165012 165013 165102 165107) | |
| Griesbachian | China (Guizhou) | Towapteria scythica (112112 121324 157352 200982 200983 200984 200985 200987 200988 200989 200990 200991 200994 200997 201000 201001 201002 201003 201004 201007 201013 205994) | |
| Griesbachian | China (Hubei) | Towapteria scythicum (149224 149225) | |
| Griesbachian | China (Guangxi) | Towapteria scythica (121128 121129 121130 187266 187267 187275 187276 187277 187278 187279 187280 187281 187282 187283) Towapteria scythicum (117512 149202) | |
| Griesbachian | China (Chongqing) | Towapteria scythicum (148537 149147 149148) | |
| Griesbachian | China (Sichuan) | Towapteria scythica (48946 48948 89361 89362 95607 95609) Towapteria scythicum (117506) | |
| Induan | China (Zhejiang) | Towapteria scythica (201714) | |
| Induan | China (Sichuan) | Towapteria scythicum (123723) | |
| Early/Lower Triassic | Vietnam (Ha Giang) | Towapteria scythica (201713) | |
| Dienerian | China (Chongqing) | Oxytoma scythicum (149146) |