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Mamenchisauridae (mamenchisaurid)
Taxonomy
Mamenchisauridae was named by Chao (1965). It was considered monophyletic by Sekiya (2011).
It was reranked as the subfamily Mamenchisaurinae by McIntosh (1990) and McIntosh (1990); it was synonymized subjectively with Euhelopodidae by Hunt et al. (1995); it was reranked as the unranked clade Mamenchisauridae by Moore et al. (2023).
It was assigned to Diplodocidae by McIntosh (1990) and McIntosh (1990); to Mamenchisauroidea by Dong (1998); to Sauropoda by McIntosh (1997) and Tang et al. (2001); to Sauropoda by Young and Chao (1972), Dong and Tang (1984), He et al. (1988), Zhang and Chen (1996) and Ouyang and Ye (2002); and to Eusauropoda by Suteethorn et al. (2010), Sekiya (2011), Suteethorn et al. (2013), Xing et al. (2015) and Moore et al. (2023).
It was reranked as the subfamily Mamenchisaurinae by McIntosh (1990) and McIntosh (1990); it was synonymized subjectively with Euhelopodidae by Hunt et al. (1995); it was reranked as the unranked clade Mamenchisauridae by Moore et al. (2023).
It was assigned to Diplodocidae by McIntosh (1990) and McIntosh (1990); to Mamenchisauroidea by Dong (1998); to Sauropoda by McIntosh (1997) and Tang et al. (2001); to Sauropoda by Young and Chao (1972), Dong and Tang (1984), He et al. (1988), Zhang and Chen (1996) and Ouyang and Ye (2002); and to Eusauropoda by Suteethorn et al. (2010), Sekiya (2011), Suteethorn et al. (2013), Xing et al. (2015) and Moore et al. (2023).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1965 | Mamenchisauridae Chao p. 36 |
| 1972 | Mamenchisauridae Young and Chao p. 2 |
| 1984 | Mamenchisauridae Dong and Tang |
| 1988 | Mamenchisauridae He et al. p. 6 |
| 1990 | Mamenchisaurinae McIntosh p. 56 |
| 1996 | Mamenchisauridae Zhang and Chen |
| 1997 | Mamenchisauridae McIntosh p. 657 |
| 1998 | Mamenchisauridae Dong p. 84 |
| 2001 | Mamenchisauridae Tang et al. p. 14 |
| 2002 | Mamenchisauridae Ouyang and Ye p. 90 |
| 2002 | Omeisauridae Wilson p. 240 fig. 13 |
| 2008 | Omeisauridae Allain and Aquesbi p. 403 |
| 2010 | Mamenchisauridae Suteethorn et al. |
| 2011 | Mamenchisauridae Sekiya |
| 2013 | Mamenchisauridae Suteethorn et al. p. 461 |
| 2015 | Mamenchisauridae Xing et al. |
| 2023 | Mamenchisauridae Moore 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.
Unr. †Mamenchisauridae Chao 1965 [mamenchisaurid]
show all | hide all
G. †Mamenchisaurus Young 1954
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†Mamenchisaurus anyuensis He et al. 1996
†Mamenchisaurus constructus Young 1954
†Mamenchisaurus hochuanensis Chao 1965
†Mamenchisaurus jingyanensis Zhang et al. 1998
†Mamenchisaurus sinocanadorum Russell and Zheng 1994
†Mamenchisaurus youngi Pi et al. 1996
G. †Omeisaurus Young 1939
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†Omeisaurus changshouensis Young 1958
†Omeisaurus fuxiensis Dong et al. 1983
†Omeisaurus jiaoi Jiang et al. 2011
†Omeisaurus junghsiensis Young 1939
†Omeisaurus luoquanensis Li 1988
†Omeisaurus maoianus Tang et al. 2001
†Omeisaurus puxiani Tan et al. 2020
†Omeisaurus tianfuensis He et al. 1984
G. †Tienshanosaurus Young 1937
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Invalid names: Tienshanosaurus chitaiensis Young 1937 [nomen dubium]
G. †Zigongosaurus Hou et al. 1976
Invalid names: Omeisauridae Wilson 2002 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C.-C. Young and H. C. Chao 1972 | Extremely long cervical region (19 vertebrae); dorsal, sacral, and caudal vertebrae short and few in number (4 sacral vertebrae); massive and long cervical ribs; pleurocoels not well developed on dorsal vertebrae; anterior dorsal vertebrae with bifid neural spine; medial caudal vertebrae with bifurcated haemal spines; anterior caudal vertebrae procoelous; centrally positioned pubic peduncle on ilium. | |
| S. Suteethorn et al. 2013 | Posterior cervical vertebrae of mamenchisaurids can be diagnosed by their bifid neural spine with a U−shaped cleft and no median tubercle; the centrum and neural spine are entirely filled with numerous small pneumatic camellae (cancellous inner structure); the centra show large pleurocoels with successive generations of smaller chambers. |
Measurements
No measurements are available
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| Source: g = genus, infrao = infraorder | |||||
| References: Peczkis 1995, Marsh 1875 | |||||
Age range: base of the Early/Lower Jurassic to the top of the Early/Lower Albian or 201.40000 to 109.00000 Ma
Collections (61 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Jurassic | China (Sichuan) | Tonganosaurus hei (74735) | |
| Middle Jurassic | China (Sichuan) | Omeisaurus sp. (232460) | |
| Middle Jurassic | China (Yunnan) | Yuanmousaurus jiangyiensis, Eomamenchisaurus yuanmouensis (64016) | |
| Middle Jurassic | China (Anhui) | Anhuilong diboensis (196538) Huangshanlong anhuiensis (163944) | |
| Middle Jurassic - Late/Upper Jurassic | Thailand (Krabi) | Euhelopodidae indet. (52916) | |
| Bajocian | China (Sichuan) | Sauropoda indet. (47072) | |
| Bajocian | China (Yunnan) | Mamenchisaurus sp., Chuanjiesaurus anaensis (70438) | |
| Bajocian - Oxfordian | China (Sichuan) | Mamenchisauridae indet., Omeisaurus tianfuensis, Abrosaurus dongpoensis, Omeisaurus jiaoi (24883) | |
| Bathonian | Russian Federation (Krasnoyarsk) | Titanosauriformes indet. (61891) | |
| Bathonian - Callovian | China (Sichuan) | Mamenchisaurus hochuanensis (28231 53662 58975) Mamenchisaurus hochuanensis, Mamenchisaurus jingyanensis (60064) Mamenchisaurus sp. (47134) Mamenchisaurus youngi (58974) Omeisaurus changshouensis (57771) Omeisaurus fuxiensis (51914) Sauropoda indet. (47071) | |
| Bathonian - Callovian | China (Chongqing) | Omeisaurus sp. (205726) | |
| Bathonian - Late/Upper Jurassic | China (Xinjiang) | Xinjiangtitan shanshanesis (153762) | |
| Late/Upper Bathonian | China (Gansu) | Mamenchisauridae indet. (204947) | |
| Callovian | China (Xinjiang) | Klamelisaurus gobiensis (140200) | |
| Oxfordian | China (Sichuan) | Omeisaurus luoquanensis (53665) | |
| Oxfordian | China (Xinjiang) | Bellusaurus sui (53670) Mamenchisauridae indet. (76193) Tienshanosaurus chitaiensis (53658 57774) Tienshanosaurus sp. (70960) | |
| Late/Upper Jurassic | China (Sichuan) | Mamenchisaurus anyuensis (58976) Mamenchisaurus constructus (57772) | |
| Late/Upper Jurassic | China (Gansu) | Mamenchisaurus constructus (49792 57770) Omeisaurus junghsiensis (53671) | |
| Late/Upper Jurassic | Mongolia (Govi-Altay) | Mamenchisaurus sp. (48822) | |
| Late/Upper Jurassic | China (Chongqing) | Qijianglong guokr (165720) | |
| Early/Lower Oxfordian | China (Xinjiang) | Sauropoda indet. (36569) | |
| Late/Upper Oxfordian - Kimmeridgian | China (Xinjiang) | Mamenchisauridae indet. (47056) | |
| Kimmeridgian | China (Guangxi Zhuang) | Jingia dongxingensis (233635) | |
| Kimmeridgian - Tithonian | China (Sichuan) | Daanosaurus zhangi (89050) Mamenchisaurus constructus (24864) Omeisaurus maoianus (131866) | |
| Late/Upper Kimmeridgian - Tithonian | China (Xinjiang) | Hudiesaurus sinojapanorum (45172 169944 223916) | |
| Tithonian | China (Sichuan) | Omeisaurus junghsiensis (47076 47077) | |
| Tithonian | Mongolia (Govi-Altay) | Mamenchisaurus sp. (179178 179181 179182 179183 179184) Sauropoda indet. (69913) | |
| Tithonian | Tanzania (Lindi) | Gigantosaurus robustus (48349 48360) | |
| Tithonian - Berriasian | Thailand (Kalasin) | Mamenchisauridae indet. (157421) Mamenchisaurus sp. (141557) | |
| Tithonian - Berriasian | Thailand (Mukdahan) | Mamenchisaurus sp. (78979) Sauropoda indet., Euhelopodidae indet. (92150) | |
| Late/Upper Aptian | China (Sichuan) | Mamenchisaurus anyuensis (58977) | |
| Early/Lower Albian | China (Gansu) | Mamenchisauridae indet. (45167) |