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Psammosteus

Pteraspidomorpha - Pteraspidiformes - Psammosteidae

Taxonomy
Psammosteus was named by Agassiz (1844).

It was assigned to Psammosteidae by Jordan (1963), Moloshnikov (2009) and Randle and Sansom (2017).

Synonymy list
YearName and author
1844Psammosteus Agassiz
1963Psammosteus Jordan p. 585
2009Psammosteus Moloshnikov
2017Psammosteus Randle and Sansom p. 597

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumCraniata
superclassPteraspidomorphi(Goodrich 1909)
RankNameAuthor
classPteraspidomorpha
subclassHeterostraciLankester 1868
orderPteraspidiformesBerg 1940
suborderPteraspidoidei(Janvier 1996)
familyPsammosteidaeTraquair 1896
genusPsammosteusAgassiz 1844

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. †Psammosteus Agassiz 1844
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†Psammosteus arenatus Agassiz 1845
†Psammosteus granulatus M'Coy 1848
†Psammosteus maeandrinus Agassiz 1845
†Psammosteus paradoxus Agassiz 1845
†Psammosteus praecursor Obruchev 1947
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatitesubp
Locomotion: actively mobilep
Created: 2007-09-27 04:49:26
Modified: 2017-03-09 14:07:44
Source: subp = subphylum, p = phylum
Reference: Kiessling 2004

Age range: base of the Emsian to the top of the Pennsylvanian or 407.60000 to 298.90000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Emsian407.6 - 393.3Belarus (Gormel) P. toriensis (232955)
Eifelian393.3 - 387.7Russian Federation P. sp. (90332)
Early/Lower Givetian388.1 - 383.7Russian Federation P. sp. (90333)
Early/Lower Frasnian383.7 - 382.4Russian Federation P. praecursor (90343) P. sp. (90335)
Late/Upper Givetian380.2 - 382.7Russian Federation P. sp. (90334)
Late/Upper Givetian380.2 - 382.7Belarus P. praecursor (225888)
Late/Upper Givetian380.2 - 382.7Estonia P. spp. (225778)
Late/Upper Frasnian379.5 - 376.1Russian Federation P. sp. (90336)
Pennsylvanian323.2 - 298.9Ireland P. granulatus (132818)
Pennsylvanian323.2 - 298.9United Kingdom P. vermicularis (132819)