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Bajarunia euomphala
Taxonomy
Ceratites euomphalus was named by Keyserling (1845).
It was recombined as Meekoceras euomphalum by Mojsisovics (1882); it was recombined as Xenodiscus euomphalus by Mojsisovics (1886); it was recombined as Nordophiceras euomphalus by Kummel (1969) and Zakharov (1978); it was recombined as Bajarunia euomphala by Dagis and Ermakova (1988) and Dagis et al. (1996).
It was recombined as Meekoceras euomphalum by Mojsisovics (1882); it was recombined as Xenodiscus euomphalus by Mojsisovics (1886); it was recombined as Nordophiceras euomphalus by Kummel (1969) and Zakharov (1978); it was recombined as Bajarunia euomphala by Dagis and Ermakova (1988) and Dagis et al. (1996).
Synonymy list
| Year | Name and author |
|---|---|
| 1845 | Ceratites euomphalus Keyserling |
| 1882 | Meekoceras euomphalum Mojsisovics |
| 1886 | Xenodiscus euomphalus Mojsisovics |
| 1969 | Nordophiceras euomphalus Kummel |
| 1978 | Nordophiceras euomphalus Zakharov figs. Pl 9, figs 1-4 |
| 1988 | Bajarunia euomphala Dagis and Ermakova p. 23 figs. Pl 3, figs 3-5 |
| 1996 | Bajarunia euomphala Dagis et al. p. 96 figs. Pl 50, fig 2 |
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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.
†Bajarunia euomphala Keyserling 1845
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 5 | 25.1 | 20.5 | 32.0 | 24.0 | 5.08 | |
| shell diameter | 5 | 64.4 | 52.0 | 82.0 | 61.0 | 14.9 | |
| shell inflation | 5 | 19.1 | 13.5 | 26.5 | 19.0 | 5.82 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Olenekian or 251.20000 to 247.20000 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Spathian | Russian Federation | Bajarunia euomphala (99909 99910 99916 107108 123384 123497 123498 123499 123500 123501 123502) Nordophiceras euomphalus (123495) | |
| Spathian | Svalbard and Jan Mayen (Spitsbergen) | Bajarunia euomphala (211371) | |
| Olenekian | Russian Federation (Siberia) | Nordophiceras euomphalus (72343 72344 72350 72355) | |
| Olenekian | Norway | Bajarunia euomphala (31369) | |
| Olenekian | Russian Federation | Bajarunia euomphala (124535) |