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Pycnosteus
Taxonomy
Pycnosteus was named by Preobrajenski (1911) [Sepkoski's age data: D Give-u Sepkoski's reference number: 689].
It was assigned to Psammosteidae by Jordan (1963); and to Pteraspidomorphes by Sepkoski (2002).
It was assigned to Psammosteidae by Jordan (1963); and to Pteraspidomorphes by Sepkoski (2002).
Synonymy list
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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. †Pycnosteus Preobrajenski 1911
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Early/Lower Givetian to the top of the Eifelian or 388.10000 to 387.70000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Eifelian | Belarus | P. sp. (225881 225882) | |
| Eifelian | Russian Federation | P. sp. (90332) | |
| Eifelian | Estonia | P. sp. (225793) | |
| Early/Lower Givetian | Belarus | P. sp. (225886) | |
| Early/Lower Givetian | Estonia | P. palaeformis (225804) P. pauli (225803) | |
| Early/Lower Givetian | Latvia | P. palaeformis (225850) P. palaeformis, P. pauli (225802) |