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Semilingula
Taxonomy
Semilingula was named by Yegorov and Popov (1990) [Semilingula Popov, in Yegorov & Popov (1990); Sepkoski's age data: P Leon-u Sepkoski's reference number: 1064].
It was assigned to Lingulida by Sepkoski (2002); and to Lingulidae by Williams et al. (2000), Peng and Shi (2008).
It was assigned to Lingulida by Sepkoski (2002); and to Lingulidae by Williams et al. (2000), Peng and Shi (2008).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Semilingula Yegorov and Popov p. 109 |
| 2000 | Semilingula Williams et al. p. 38 |
| 2002 | Semilingula Sepkoski |
| 2008 | Semilingula Peng and Shi p. 149 |
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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. †Semilingula Yegorov and Popov 1990
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†Semilingula arctica Miloradovich 1936
†Semilingula occidentaustralis Archbold 1981
†Semilingula taimyrensis Einor 1946
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 1 | 2.80 | - | - | - | - | |
| valve height | 10 | 1.40 | 1.20 | 1.70 | 1.35 | 0.191 |
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| Source: f = family, o = order, c = class, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Bambach et al. 2007, Aberhan et al. 2004 | |||||
Age range: base of the Artinskian to the top of the Roadian or 290.10000 to 266.90000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | Australia (Western Australia) | Lingula occidentaustralis (101281 101282) | |
| Kungurian | Russian Federation (Nenets Autonomous Okrug) | Lingula arctica (126166 126167 126171 126172) | |
| Kungurian | Russian Federation | Lingula arctica (126169 126170) | |
| Roadian | Russian Federation | Lingula credneri (88410) S. taimyrensis (95650 121201) |