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Bajarunia
Taxonomy
Bajarunia was named by Dagys (1983).
It was assigned to Meekoceratidae by Dagis et al. (1996), Zakharov and Smyshlyaeva (2016); and to Ceratitida by Brayard et al. (2019).
It was assigned to Meekoceratidae by Dagis et al. (1996), Zakharov and Smyshlyaeva (2016); and to Ceratitida by Brayard et al. (2019).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Bajarunia Dagys |
| 1996 | Bajarunia Dagis et al. p. 96 |
| 2016 | Bajarunia Zakharov and Smyshlyaeva p. 231 |
| 2019 | Bajarunia Brayard et al. p. 26 |
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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. †Bajarunia Dagys 1983
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†Bajarunia alexeevae Popov 1961
†Bajarunia confusionensis Guex et al. 2005
†Bajarunia eiekitensis Popov 1962
†Bajarunia euomphala Keyserling 1845
†Bajarunia magna Zakharov and Smyshlyaeva 2016
†Bajarunia pilata Hyatt and Smith 1905
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Invalid names: Meekoceras curticostatum Smith 1932 [synonym], Meekoceras micromphalus Smith 1932 [synonym], Meekoceras sanctorum Smith 1932 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 33 | 19.0 | 8.50 | 35.0 | 21.0 | 7.20 | |
| shell diameter | 33 | 49.1 | 25.0 | 94.0 | 52.0 | 18.9 | |
| shell inflation | 33 | 15.6 | 9.50 | 42.0 | 14.0 | 8.10 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Collections (49 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Triassic | Afghanistan (Paktia) | Nordophiceras euomphalum (41670) | |
| Smithian | Russian Federation | Nordophiceras alexeevae (127725) | |
| Smithian | Russian Federation (Primorye) | B. dagysi (47286) | |
| Olenekian | Russian Federation | B. euomphala (124535) B. sp. (124534) | |
| Olenekian | Norway | B. euomphala (31369) | |
| Olenekian | Russian Federation (Siberia) | Nordophiceras euomphalus (72343 72344 72350 72355) | |
| Spathian | USA (Idaho) | B. pilata (109405 109406 123899 123900 123902 150129 150131 202145 202192 202193 202195) B. pilatum, B. jacksoni (90300) B. sp. (202191) B. sp., B. pilata (202194) Meekoceras pilatum, Meekoceras curticostatum, Meekoceras micromphalus, Meekoceras sanctorum (33319) Nordophiceras pilatum (110958) | |
| Spathian | USA (Utah) | B. confusionensis (109386 109387) | |
| Spathian | Russian Federation | B. alexandri, B. taimyrensis, B. euomphala (99916) B. eiekitensis (107017) B. eiekitensis, B. euomphala (107108) B. euomphala (99909 99910 123384 123497 123498 123499 123500 123501 123502) B. magna (179357 179380 179381 179382) B. sp. (99917 123504) Nordophiceras alexeevae (123503) Nordophiceras euomphalus (123495) | |
| Spathian | Svalbard and Jan Mayen (Spitsbergen) | B. euomphala (211371) |