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Ussuridiscus
Taxonomy
Ussuridiscus was named by Shigeta and Zakharov (2009). Its type is Meekoceras (Kingites) varaha.
It was assigned to Meekoceratidae by Shigeta and Zakharov (2009); to Gyronitidae by Ware et al. (2011); and to Mullericeratidae by Zhang et al. (2017), Ware and Bucher (2018), Ware and Bucher (2018), Dai et al. (2019), Jenks et al. (2025).
It was assigned to Meekoceratidae by Shigeta and Zakharov (2009); to Gyronitidae by Ware et al. (2011); and to Mullericeratidae by Zhang et al. (2017), Ware and Bucher (2018), Ware and Bucher (2018), Dai et al. (2019), Jenks et al. (2025).
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Ussuridiscus Shigeta and Zakharov p. 69 |
| 2011 | Ussuridiscus Ware et al. |
| 2017 | Ussuridiscus Zhang et al. p. 660 |
| 2018 | Ussuridiscus Ware and Bucher |
| 2019 | Ussuridiscus Dai et al. p. 61 |
| 2025 | Ussuridiscus Jenks et al. p. 17 |
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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. †Ussuridiscus Shigeta and Zakharov 2009
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†Ussuridiscus ensanus Krafft 1909
†Ussuridiscus ornatus Ware and Bucher 2018
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Invalid names: Koninckites vidharba Diener 1897 [replaced]
†Ussuridiscus varaha Diener 1897
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Invalid names: Hubeitoceras wangi Zakharov and Mu 2007 [synonym]
†Ussuridiscus ventriosus Ware and Bucher 2018
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 45 | 18.0 | 4.00 | 42.3 | 17.8 | 8.72 | |
| shell diameter | 45 | 34.4 | 7.90 | 78.0 | 35.2 | 15.8 | |
| shell inflation | 45 | 3.97 | 1.30 | 10.2 | 4.20 | 2.07 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Griesbachian to the top of the Smithian or 251.90200 to 248.10000 Ma
Collections (56 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Griesbachian | China (Hubei) | U. varaha (204866 204869 204882) | |
| Griesbachian | Russian Federation | U. varaha (90206 90207 90208) | |
| Griesbachian | China | U. sp. (195901) | |
| Griesbachian | China (Guizhou) | Hubeitoceras wangi (113866) Koninckites timorense (104961 104962) | |
| Griesbachian | India | Meekoceras vidharba (85463) | |
| Induan | India | Koninckites vidharba (211001) | |
| Dienerian | China (Guizhou) | U. varaha (198890 198891) | |
| Dienerian | China (Guangxi) | Koninckites timorense (104964 104967 104968 104971 104973) | |
| Dienerian | China (Hubei) | U. varaha (218270 218272) | |
| Dienerian | USA (Nevada) | U. sp. (120318) U. varaha (238991 238992 238993 238994) | |
| Dienerian | Madagascar (Diana) | Koninckites ensanus (153773) | |
| Dienerian | India (Uttarakhand) | Clypeoceras ensanum (215030) | |
| Dienerian | India (Himachal Pradesh) | U. ensanus (217563 217564 217583 217591 217600 217601 217610 217612 217613) U. ensanus, U. ornatus (217573) U. ornatus (217590) U. varaha (217561 217572 217581) U. ventriosus (217562) | |
| Dienerian | Russian Federation | U. varaha (90210) | |
| Dienerian | China (Xizang) | U. sp. (189588) U. varaha (229695 229729) | |
| Dienerian | Pakistan (Punjab) | U. ensanus (217481 217482 217501 217502) U. ensanus, U. ornatus (217508) U. ensanus, U. ventriosus, U. ornatus (217480) U. sp. (217479) U. varaha (217500) | |
| Smithian | Russian Federation (Primorye) | Meekoceras varaha (47215) |