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Placosteus

Pteraspidomorpha - Pteraspidiformes - Psammosteidae

Taxonomy
Placosteus was named by Agassiz (1843).

It was assigned to Psammosteidae by Jordan (1963).

Synonymy list
YearName and author
1843Placosteus Agassiz p. 177
1963Placosteus Jordan p. 585

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassPteraspidomorphi(Goodrich 1909)
RankNameAuthor
classPteraspidomorpha
subclassHeterostraciLankester 1868
orderPteraspidiformesBerg 1940
suborderPteraspidoidei(Janvier 1996)
familyPsammosteidaeTraquair 1896
genusPlacosteus

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. †Placosteus Agassiz 1843
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†Placosteus alatus Mark-Kurik 1965
†Placosteus undulatus Agassiz 1844
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilep
Created: 2017-04-17 15:11:50
Modified: 2017-04-17 15:11:50
Source: subp = subphylum, p = phylum
References: Carroll 1988, Kiessling 2004

Age range: Late/Upper Givetian or 383.40000 to 382.31000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Givetian387.95 - 382.31Latvia P. undulatus (239144)
Givetian387.95 - 382.31Estonia P. alatus (239670)
Late/Upper Givetian383.4 - 382.31Latvia P. undulatus (239671)