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Paracrurithyris pigmaea
Taxonomy
Crurithyris pigmaea was named by Liao (1980). Its type specimen is NIGP 43723 and is a mold.
It was recombined as Paracrurithyris pigmaea by Wang et al. (1982), Liao (1987), He et al. (2005), Chen and Liao (2009), Chen (2009) and He et al. (2012); it was synonymized subjectively with Crurithyris pusilla by Xu and Grant (1994); it was considered a nomen nudum by Liao (1979); it was recombined as Paracrurithyris pygmaea by He et al. (2019).
It was recombined as Paracrurithyris pigmaea by Wang et al. (1982), Liao (1987), He et al. (2005), Chen and Liao (2009), Chen (2009) and He et al. (2012); it was synonymized subjectively with Crurithyris pusilla by Xu and Grant (1994); it was considered a nomen nudum by Liao (1979); it was recombined as Paracrurithyris pygmaea by He et al. (2019).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Crurithyris pusilla Zhan p. 96 figs. Pl 13, figs 24-26 |
| 1980 | Crurithyris pigmaea Liao p. 264 figs. Pl 8, figs 1-4 |
| 1982 | Paracrurithyris pigmaea Wang et al. p. 249 figs. Pl 96, figs 1-3 |
| 1984 | Crurithyris pigmaea Liao figs. Pl 2, figs 26,27 |
| 1987 | Paracrurithyris pigmaea Liao figs. Pl 6, fig 5 |
| 1994 | Crurithyris pusilla Xu and Grant p. 43 figs. 32,34.1-32.47,34.52 |
| 2005 | Paracrurithyris pigmaea He et al. p. 935 figs. 6.6-6.15 |
| 2006 | Orbicoelia pusilla Chen p. 306 |
| 2009 | Paracrurithyris pigmaea Chen p. 177 figs. 6A-C |
| 2009 | Paracrurithyris pigmaea Chen and Liao p. 331 fig. 5K,L |
| 2012 | Crurithyris tazawai He and Shi p. 521 figs. 5A-S, 6A-J |
| 2012 | Paracrurithyris pigmaea He et al. p. 523 figs. 7A-N |
| 2014 | Paracrurithyris pygmaea Garbelli et al. p. 124 fig. 4 |
| 2019 | Paracrurithyris pygmaea He et al. p. 178 figs. 9.61, 9.62a-h, 9.63 |
| 2019 | Orbicoelia pusilla Wu et al. p. 625 figs. 7L-P |
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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.
†Paracrurithyris pigmaea Liao 1980
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Invalid names: Crurithyris pusilla Zhan 1979 [synonym], Crurithyris tazawai He and Shi 2012 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 6 | 2.96 | 2.00 | 4.60 | 2.90 | 0.975 |
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| Source: superf = superfamily, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Changhsingian to the top of the Griesbachian or 254.17000 to 250.50000 Ma
Collections (105 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | Russian Federation (South Primorye) | Paracrurithyris pigmaea (52820) | |
| Changhsingian | China (Anhui) | Paracrurithyris pigmaea (112386 121413 136859 136860 136861 136862 136863 136864 136865 136866 136871 149198) Paracrurithyris pigmaea, Crurithyris tazawai (136867 136868 136869 136870) | |
| Changhsingian | China (Fujian) | Paracrurithyris pigmaea (95483 95485 95486 95490 95492 95503 120152) | |
| Changhsingian | China (Sichuan) | Crurithyris pigmaea (111613 148459) Crurithyris pusilla (50030 120790 148462) Paracrurithyris pigmaea (149120) | |
| Changhsingian | China (Zhejiang) | Crurithyris pusilla (50028) Paracrurithyris pigmaea (48895 122711) | |
| Changhsingian | China (Guangxi) | Paracrurithyris pigmaea (112424) | |
| Changhsingian | China (Guangdong) | Crurithyris pusilla (96803 109775) | |
| Changhsingian | China (Chongqing) | Crurithyris pusilla (50033 120783 120793 149256) Paracrurithyris pigmaea, Crurithyris pusilla (148539 149153) | |
| Changhsingian | China (Guizhou) | Crurithyris pigmaea (81341 111986 111987 111988) Crurithyris tazawai (136846) Orbicoelia pusilla (99630 180415) Paracrurithyris pigmaea (89321 105173 136831 136832 136833 136834 136836 136838 136840 136841 136842 136844 136845) Paracrurithyris pigmaea, Crurithyris tazawai (136835 136837 136839 136843 136847 136848) Paracrurithyris pygmaea (145677) | |
| Changhsingian | China (Hunan) | Crurithyris pusilla (31420) Paracrurithyris pigmaea (136849 136855 136856 136857) Paracrurithyris pigmaea, Crurithyris tazawai (136850 136851 136852 136853 136854) | |
| Changhsingian | Iran | Paracrurithyris pygmaea (156732 156733 156734) | |
| Changhsingian | China (Jiangsu) | Crurithyris pigmaea (112369 112372) Paracrurithyris pigmaea (121636 136874 136876) Paracrurithyris pigmaea, Crurithyris tazawai (136873 136875) | |
| Changhsingian | China (Xizang) | Paracrurithyris pigmaea (48916) | |
| Griesbachian | China (Guangxi) | Paracrurithyris pigmaea (112402 112408) | |
| Griesbachian | China (Chongqing) | Crurithyris pusilla (148537) Paracrurithyris pigmaea (149125) | |
| Griesbachian | China (Zhejiang) | Paracrurithyris pigmaea (43790 105222 105223 105225) | |
| Griesbachian | China (Hunan) | Paracrurithyris pigmaea (136858) | |
| Griesbachian | China (Fujian) | Paracrurithyris pigmaea (95494) | |
| Griesbachian | China (Anhui) | Paracrurithyris pigmaea (136872) | |
| Griesbachian | China (Jiangsu) | Paracrurithyris pigmaea (63510 63511 112385) | |
| Griesbachian | China (Hubei) | Paracrurithyris pigmaea (149219) |