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Palaeoanacystis
Taxonomy
Palaeoanacystis was named by Schopf (1968). It is considered to be a form taxon.
It was assigned to Chroococcaceae by Schopf (1968), Hofmann (1976), Oehler (1978), Zhang (1981) and Allison and Awramik (1989); and to Chlorococcaceae by Maithy and Babu (1993).
It was assigned to Chroococcaceae by Schopf (1968), Hofmann (1976), Oehler (1978), Zhang (1981) and Allison and Awramik (1989); and to Chlorococcaceae by Maithy and Babu (1993).
Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Palaeoanacystis Schopf p. 672 |
| 1976 | Palaeoanacystis Hofmann p. 1061 |
| 1978 | Palaeoanacystis Oehler p. 292 |
| 1981 | Palaeoanacystis Zhang p. 497 |
| 1989 | Palaeoanacystis Allison and Awramik p. 269 |
| 1993 | Palaeoanacystis Maithy and Babu |
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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. †Palaeoanacystis Schopf 1968
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†Palaeoanacystis magna Awramik 1989
†Palaeoanacystis plumbii Muir 1976
†Palaeoanacystis psilata Maithy 1975
†Palaeoanacystis punctatus Maithy and Shukla 1977
†Palaeoanacystis reticulatus Maithy and Shukla 1977
†Palaeoanacystis suketensis Maithy and Shukla 1977
†Palaeoanacystis verrucosus Maithy and Shukla 1977
†Palaeoanacystis vulgaris Schopf 1968
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range: base of the Orosirian to the top of the Nemakit-Daldynian or 2050.00000 to 525.50000 Ma
Collections (25 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Orosirian | Canada (Nunavut) | P. sp. (227732 227736) P. vulgaris (227437 227441) | |
| Statherian | India (Rajasthan) | P. vulgaris (227965) | |
| Statherian | India (Madhya Pradesh) | P. suketensis, P. punctatus, P. verrucosus, P. reticulatus (227768) | |
| Statherian | Australia (Northern Territory) | P. plumbii (227566) | |
| Calymmian | Australia (Northern Territory) | P. plumbii (227557 227558 227560) P. vulgaris, P. plumbii (227559) | |
| Calymmian | China (Hebei) | P. vulgaris (227616) | |
| Stenian | Canada (Nunavut) | P. sp. (227548 227554) | |
| Tonian | Congo-Kinshasa | P. psilata (227766) | |
| Tonian | Canada (Yukon) | P. magna (227529) P. vulgaris (148721 227534) P. vulgaris, P. magna (148719 148720 227531) | |
| Tonian | Australia (Northern Territory) | P. vulgaris (227452 227538) | |
| Tonian - Cryogenian | India (Madhya Pradesh) | P. verrucosus (140265) | |
| Nemakit-Daldynian | China (Yunnan) | P. vulgaris (227763) |