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Phractocephalus (cajaro)
Taxonomy
Phractocephalus was named by Spix and Agassiz (1829). It is extant. It was considered monophyletic by Lundberg and Littmann (2003).
It was assigned to Pimelodidae by Lundberg and Littmann (2003).
It was assigned to Pimelodidae by Lundberg and Littmann (2003).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1829 | Phractocephalus Spix and Agassiz |
| 2003 | Phractocephalus Lundberg and Littmann |
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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. Phractocephalus Spix and Agassiz 1829 [cajaro]
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†Phractocephalus acreornatus Aguilera et al. 2008 [cajaro]
Phractocephalus hemiliopterus Lundberg 1997
†Phractocephalus nassi Lundberg and Aguilera 2003 [cajaro]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| Complete left interopercle, maximum length and depth height | 1 | 54.0 | |||||
| Complete left opercle, anterior edge depth height | 1 | 37.0 | |||||
| Precaudal vertebral centrum, width between bases of transverse processes, depth, height | 1 | 53.0 | |||||
| Right posttemporal-supracleithrum, maximal depth height | 1 | 47.0 | |||||
| Right posttemporal-supracleithrum, maximum depth height | 1 | 57.0 |
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| Source: o = order, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||
Age range
Maximum range based only on fossils: base of the Early/Lower Oligocene to the top of the Laventan or 33.90000 to 11.00000 Ma
Minimum age of oldest fossil (stem group age): 28.4 Ma
Minimum age of oldest fossil (stem group age): 28.4 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Oligocene | Peru | Phractocephalus sp. (199563) | |
| Late/Upper Oligocene | Peru (Loreto) | Phractocephalus sp. (176147) | |
| Santacrucian - Friasian | Venezuela (Portugesa) | Phractocephalus sp. (190535) | |
| Langhian | Colombia (Guajira) | Phractocephalus sp. (190376) | |
| Laventan | Colombia (Huila) | Phractocephalus hemiliopterus (186680 186683) | |
| Tortonian | Brazil (Acre) | Phractocephalus acreornatus (136717) | |
| Tortonian | Venezuela (Falcon) | Phractocephalus nassi (136777) | |
| Tortonian | Peru | Phractocephalus sp. (176162) | |
| Late/Upper Miocene | Brazil (Acre) | Phractocephalus acreornatus (134808 136714 136716 136718 136719 136720) | |
| Late/Upper Miocene | Venezuela (Falcón) | Phractocephalus nassi (136769) | |
| Late/Upper Miocene | Venezuela (Falcon) | Phractocephalus nassi (136767 136776 136778) |