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Sphaerophycus
Taxonomy
Sphaerophycus was named by Schopf (1968). It is considered to be a form taxon. Its type is Sphaerophycus parvum.
It was assigned to Chroococcales by Zhang (1985); and to Chroococcaceae by Schopf (1968), Hofmann (1976), Oehler (1978), Horodyski and Donaldson (1980), Allison and Awramik (1989), Sergeev et al. (1995) and Amard and Bertrand-Sarfati (1997).
It was assigned to Chroococcales by Zhang (1985); and to Chroococcaceae by Schopf (1968), Hofmann (1976), Oehler (1978), Horodyski and Donaldson (1980), Allison and Awramik (1989), Sergeev et al. (1995) and Amard and Bertrand-Sarfati (1997).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Sphaerophycus Schopf p. 672 |
| 1976 | Sphaerophycus Hofmann p. 1058 |
| 1978 | Sphaerophycus Oehler p. 293 |
| 1980 | Sphaerophycus Horodyski and Donaldson p. 140 |
| 1985 | Sphaerophycus Zhang p. 291 |
| 1989 | Sphaerophycus Allison and Awramik p. 271 |
| 1995 | Sphaerophycus Sergeev et al. p. 27 |
| 1997 | Sphaerophycus Amard and Bertrand-Sarfati p. 209 |
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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. †Sphaerophycus Schopf 1968
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†Sphaerophycus densus Maithy 1975
†Sphaerophycus medium Horodyski and Donaldson 1980
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Invalid names: Sphaerophycus wilsonii Knoll 1982 [synonym]
†Sphaerophycus parvum Schopf 1968
†Sphaerophycus reticulatum Muir 1976
†Sphaerophycus tetragonalis Muir 1976
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Vachard and Aretz 2004 | |||||
Collections (42 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Orosirian | Canada (Nunavut) | S. parvum (227439 227441 227442 227444 227449) S. sp. (227732 227736) | |
| Orosirian | Gabon | S. parvum (227624) | |
| Statherian | Australia (Northern Territory) | S. parvum (227590) S. reticulatum (227565) S. tetragonalis (227566) | |
| Statherian | Canada (Nunavut) | S. parvum (227620) | |
| Calymmian | China (Beijing) | S. medium (227625) | |
| Calymmian | Russian Federation | S. medium (227524) | |
| Calymmian | Australia (Northern Territory) | S. parvum (227558) S. reticulatum (227559 227560) | |
| Ectasian | Russian Federation | S. medium (227489) | |
| Ectasian | Canada (Nunavut) | S. sp., S. parvum, S. medium (227526) | |
| Stenian | Canada (Nunavut) | S. medium (227544) S. parvum (227546 227547 227549 227553 227554) S. parvum, S. medium (227548) | |
| Tonian | Russian Federation (Bashkortostan) | S. medium (227759) | |
| Tonian | Congo-Kinshasa | S. densus (227766) | |
| Tonian | Greenland | S. parvum (227745 227747 227748) S. parvum, S. medium (227746 227749) | |
| Tonian | Australia (Northern Territory) | S. parvum (227452 227538) | |
| Tonian | Canada (Yukon) | S. parvum (148717 148718 148720 227529 227531 227536 227537) |