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Praesibirites
Taxonomy
Praesibirites was named by Dagis and Ermakova (1988). Its type is Praesibirites egorovi.
It was assigned to Sibiritidae by Dagis et al. (1996), Dagys (1997), Guex et al. (2010).
It was assigned to Sibiritidae by Dagis et al. (1996), Dagys (1997), Guex et al. (2010).
Species
P. egorovi (type species), P. tuberculatus
Synonymy list
| Year | Name and author |
|---|---|
| 1988 | Praesibirites Dagis and Ermakova p. 82 |
| 1996 | Praesibirites Dagis et al. p. 109 |
| 1997 | Praesibirites Dagys p. 217 |
| 2010 | Praesibirites Guex et al. p. 50 |
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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. †Praesibirites Dagis and Ermakova 1988
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†Praesibirites egorovi Dagis and Ermakova 1988
†Praesibirites tuberculatus Dagis and Konstantinov 1984
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 8 | 10.5 | 7.60 | 14.0 | 10.5 | 2.00 | |
| shell diameter | 8 | 38.9 | 27.0 | 59.0 | 37.7 | 10.3 | |
| shell inflation | 8 | 18.8 | 12.8 | 29.0 | 19.8 | 5.60 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Spathian or 248.10000 to 246.70000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Spathian | USA (Idaho) | P. sp. (109415) | |
| Spathian | Russian Federation | P. egorovi (107199) P. tuberculatus (107018 123940 123941) P. tuberculatus, P. egorovi (99912 99913) |