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Bilotina acantha
Taxonomy
Septasteges acanthus was named by Waterhouse and Piyasin (1970). Its type specimen is University of Toronto B300, a shell (Articulated shell), and it is a 3D body fossil. Its type locality is Khao Phrik, Rat Buri, which is in a Wordian offshore shelf limestone/limestone in the Rat Buri Formation of Thailand. It is the type species of Septasteges.
It was recombined as Bilotina acantha by Grant (1976), Yanagida and Pillevuit (1994), Verna and Angiolini (2011).
It was recombined as Bilotina acantha by Grant (1976), Yanagida and Pillevuit (1994), Verna and Angiolini (2011).
Synonymy list
| Year | Name and author |
|---|---|
| 1970 | Septasteges acanthus Waterhouse and Piyasin p. 120 figs. Pl 19, figs 13-12; text-fig 7 |
| 1976 | Bilotina acantha Grant p. 148 |
| 1994 | Bilotina acantha Yanagida and Pillevuit p. 68 figs. Pl 5, figs 1-4; pl 6, fig 6 |
| 2011 | Bilotina acantha Verna and Angiolini figs. Pl 2, figs 4-8 |
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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.
†Bilotina acantha Waterhouse and Piyasin 1970
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 4 | 9.24 | 6.70 | 14.0 | 8.95 | 3.34 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Williams et al. 2000, Nesnidal et al. 2013 | |||||
Age range: base of the Asselian to the top of the Capitanian or 298.90000 to 259.51000 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Asselian - Kungurian | China (Qinghai) | Bilotina acantha (68583) | |
| Roadian | Thailand | Bilotina acantha (40868) | |
| Roadian | Thailand (Trang) | Bilotina acantha (40878) | |
| Roadian | Ukraine | Bilotina acantha (110830) | |
| Roadian | Thailand (Ratchaburi) | Bilotina acantha (40936) | |
| Wordian | Türkiye | Bilotina acantha (107227 107229 107233) | |
| Wordian | Thailand (Ratchaburi) | Cancrinella sp. (116879) Septasteges acanthus (type locality: 40954) | |
| Wordian - Capitanian | Oman | Bilotina acantha (97216) | |
| Capitanian | Türkiye | Bilotina acantha (107245 107247 107249 107250 107251 107252 107256 107257 107267) |