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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