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Sphenocephalidae
Taxonomy
Sphenocephalidae was named by Patterson (1964).
It was assigned to Polymixioidei by Patterson (1964); and to Sphenocephaliformes by Newbrey et al. (2013) and Nelson et al. (2016).
It was assigned to Polymixioidei by Patterson (1964); and to Sphenocephaliformes by Newbrey et al. (2013) and Nelson et al. (2016).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1964 | Sphenocephalidae Patterson p. 383 |
| 2013 | Sphenocephalidae Newbrey et al. |
| 2016 | Sphenocephalidae Nelson et al. p. 287 |
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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.
Fm. †Sphenocephalidae Patterson 1964
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subo = suborder, subc = subclass, c = class | |||||
| References: Hendy et al. 2009, Uhen 2004, Ji et al. 2002 | |||||
Age range: base of the Turonian to the top of the Late/Upper Campanian or 93.90000 to 70.60000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turonian | Mexico (Puebla) | Xenyllion sp. (215805) | |
| Late/Upper Campanian | Germany | Sphenocephalus fissicaudus (221711 221717) |