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Polysitum
Taxonomy
Polysitum was named by Dunstan (1923). Its type is Polysitum punctatus.
It was assigned to Permosynidae by Rohdendorf (1961); to Ademosynidae by Lin (1986) and Carpenter (1992); and to Polyphaga by Ponomarenko (2014).
It was assigned to Permosynidae by Rohdendorf (1961); to Ademosynidae by Lin (1986) and Carpenter (1992); and to Polyphaga by Ponomarenko (2014).
Species
P. elongatum, P. hosbayari, P. kuznetskiense, P. latum, P. majus, P. minutus, P. ovale, P. punctatus (type species), P. rugosum, P. sharategense, P. wudenghaoensis
Synonymy list
| Year | Name and author |
|---|---|
| 1923 | Polysitum Dunstan p. 40 |
| 1961 | Polysitum Rohdendorf p. 468 |
| 1986 | Polysitum Lin p. 74 |
| 1992 | Polysitum Carpenter |
| 2014 | Polysitum Ponomarenko p. 1665 |
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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. †Polysitum Dunstan 1923
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†Polysitum elongatum Ponomarenko 1985
†Polysitum hosbayari Ponomarenko 1986
†Polysitum kuznetskiense Rohdendorf 1961
†Polysitum latum Ponomarenko 1985
†Polysitum majus Ponomarenko 1990
†Polysitum minutus Dunstan 1923
†Polysitum ovale Ponomarenko 1990
†Polysitum punctatus Dunstan 1923
†Polysitum rugosum Ponomarenko 1986
†Polysitum sharategense Ponomarenko 2014
†Polysitum wudenghaoensis Hong 1976
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Bush and Bambach 2015, Kiessling 2004 | |||||
Age range: base of the Wuchiapingian to the top of the Aptian or 259.90000 to 113.00000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wuchiapingian | Russian Federation | P. kuznetskiense (124608) | |
| Norian | Australia (Queensland) | P. punctatus, P. minutus (111558) | |
| Hettangian | Poland (Swietokrzyskie) | P. sp. (123446) | |
| Bajocian - Bathonian | Russian Federation (Krasnoyarsk) | P. elongatum, P. latum (118010) | |
| Tithonian | Russian Federation (Chita) | P. ovale (114307) | |
| Tithonian | Mongolia | P. sharategense (104748) | |
| Hauterivian | Russian Federation (Chita) | P. majus (125409) | |
| Barremian - Albian | China (Nei Mongol) | P. wudenghaoensis (156006) | |
| Aptian | Mongolia (Govi-Altai) | P. rugosum, P. hosbayari (122332) |