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Xiaohenautilus
Taxonomy
Xiaohenautilus was named by Xu (1988). Its type is Xiaohenautilus sinensis.
It was assigned to Grypoceratidae by Shigeta and Zakharov (2009) and Jenks et al. (2021).
It was assigned to Grypoceratidae by Shigeta and Zakharov (2009) and Jenks et al. (2021).
Species
Synonymy list
Year | Name and author |
---|---|
1988 | Xiaohenautilus Xu p. 439 |
2009 | Xiaohenautilus Shigeta and Zakharov p. 47 |
2021 | Xiaohenautilus Jenks et al. p. 20 |
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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.
G. †Xiaohenautilus Xu 1988
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†Xiaohenautilus abrekensis Shigeta and Zakharov 2009
†Xiaohenautilus huananensis Xu 1988
†Xiaohenautilus mulleni Jenks et al. 2021
†Xiaohenautilus sinensis Xu 1988
Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 24 | 24.1 | 4.40 | 40.0 | 25.6 | 8.26 | |
shell diameter | 24 | 48.8 | 8.30 | 82.9 | 51.0 | 17.2 | |
shell inflation | 24 | 12.9 | 7.40 | 17.9 | 13.1 | 3.09 |
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Source: o = order, c = class | |||||
References: Kiessling 2004, Kiessling 2003 |
Age range: Griesbachian or 251.90200 to 250.50000 Ma
Collections (17 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Griesbachian | China (Guizhou) | X. huananensis (198883 198884 198885) X. sinensis (198881 198882 198887 198889) X. sinensis, X. huananensis (113871 198888) X. sp. (104961 104962) | |
Griesbachian | USA (Nevada) | X. mulleni (220330) | |
Griesbachian | China (Hubei) | X. sinensis (204871) X. sinensis, X. huananensis (204866 204867) | |
Griesbachian | Russian Federation | X. abrekensis (90208) | |
Dienerian | China (Hubei) | X. sinensis, X. huananensis (95718) |