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Tetravirga
Taxonomy
Tetravirga was named by Frizzell and Exline (1955) [Sepkoski's age data: C Vise-u Tr Nori-u Sepkoski's reference number: 2,768,982]. It is not extant. It is considered to be a form taxon. Its type is Tetravirga imperforata.
It was assigned to Aspidochirotida by Pawson (1966); to Stichopitidae by Frizzell and Exline (1955), Deflandre-Rigaud (1962), Frizzell and Exline (1966), Mostler (1968), Kozur and Mostler (1971), Mostler (1971), Mostler and Rahimi-Yazd (1976), Wernlund (1977), Mostler (1980), Krainer and Mostler (1997); to Holothuroidea by Broglio Loriga et al. (1999); and to Elasipodida by Sepkoski (2002).
It was assigned to Aspidochirotida by Pawson (1966); to Stichopitidae by Frizzell and Exline (1955), Deflandre-Rigaud (1962), Frizzell and Exline (1966), Mostler (1968), Kozur and Mostler (1971), Mostler (1971), Mostler and Rahimi-Yazd (1976), Wernlund (1977), Mostler (1980), Krainer and Mostler (1997); to Holothuroidea by Broglio Loriga et al. (1999); and to Elasipodida by Sepkoski (2002).
Species
T. etheridgei, T. fordelensis, T. gracilis, T. imperforata (type species), T. liassica, T. perforata
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1955 | Tetravirga Frizzell and Exline |
| 1962 | Tetravirga Deflandre-Rigaud p. 43 |
| 1966 | Tetravirga Frizzell and Exline p. U663 |
| 1966 | Tetravirga Pawson p. U645 |
| 1968 | Tetravirga Mostler p. 432 |
| 1971 | Tetravirga Kozur and Mostler p. 27 |
| 1971 | Tetravirga Mostler p. 6 |
| 1976 | Tetravirga Mostler and Rahimi-Yazd p. 5 |
| 1977 | Tetravirga Wernlund p. 80 |
| 1980 | Tetravirga Mostler p. 337 |
| 1997 | Tetravirga Krainer and Mostler p. 8 |
| 1999 | Tetravriga Broglio Loriga et al. p. 62 |
| 2002 | Tetravirga Sepkoski |
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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. †Tetravirga Frizzell and Exline 1955
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†Tetravirga etheridgei Frizzell and Exline 1955
†Tetravirga fordelensis Frizzell and Exline 1955
†Tetravirga gracilis Mostler 1968
†Tetravirga imperforata Frizzell and Exline 1955
†Tetravirga liassica Mostler 1968
†Tetravirga perforata Mostler 1968
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan 1992, Aberhan et al. 2004 | |||||
Age range: base of the Mississippian to the top of the Liasicus or 358.86000 to 199.50000 Ma
Collections (24 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Mississippian | Afghanistan | T. imperforata, T. perforata (99508) | |
| Virgilian | USA (Nebraska) | T. sp. (94391) | |
| Capitanian | USA (Texas) | T. sp. (99860) | |
| Wuchiapingian | Iran | T. sp. (75773) | |
| Anisian | Türkiye | T. levis (98001) | |
| Pelsonian | Türkiye | T. levis (98000) | |
| Pelsonian | Austria | T. levis, T. imperforata, T. perforata (99797) | |
| Illyrian | Türkiye | T. sp. (98002) | |
| Fassanian | Hungary | T. imperforata (99503) | |
| Longobardian | China (Guizhou) | T. sp. (85165) | |
| Longobardian | Hungary | T. imperforata (99504) | |
| Julian | Italy | T. sp. (163815) | |
| Julian | Italy (Belluno) | T. sp., T. perforata (207478) | |
| Julian | Hungary | T. imperforata (99502) | |
| Carnian | Italy | Tetravriga imperforata (50979 50982 50984 50985) | |
| Lacian | Slovakia | T. gracilis (99561) | |
| Norian | Austria | T. gracilis (94109) | |
| Sevatian | Slovakia | T. gracilis (99558 99562) | |
| Liasicus | Austria | T. gracilis (227857) T. gracilis, T. liassica (227858) |