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Sphenosiagon
Taxonomy
Sphenosiagon was named by Gao and Fox (1991). Its type is Sphenosiagon simplex.
It was assigned to Mongolochamopini by Alifanov (1993); to Teiidae by Gao and Fox (1991), Gao and Fox (1996); and to Mongolochamopidae by Alifanov (2000).
It was assigned to Mongolochamopini by Alifanov (1993); to Teiidae by Gao and Fox (1991), Gao and Fox (1996); and to Mongolochamopidae by Alifanov (2000).
Species
S. simplex (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1991 | Sphenosiagon Gao and Fox |
| 1993 | Sphenosiagon Alifanov p. 74 |
| 1996 | Sphenosiagon Gao and Fox p. 28 |
| 2000 | Sphenosiagon Alifanov p. 374 |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Kiessling 2004, Behler and King 1979, Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Late/Upper Santonian to the top of the Late/Upper Campanian or 85.70000 to 72.20000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Santonian | Canada (Alberta) | S. simplex (14425) | |
| Judithian | Canada (Alberta) | S. simplex (14463) | |
| Middle Campanian - Late/Upper Campanian | Canada (Alberta) | S. simplex (116538) |