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Pteraspidomorpha -

Astraspida was named by Berg (1940).

It was reranked as the subclass Astraspida by Long (2011) and Van Der Laan (2019).

It was assigned to Pteraspidomorphi by Long (2011); and to Pteraspidomorpha by Van Der Laan (2019).

Sister taxa
Astrapidiformes, Astraspidiformes

View classification of included taxa

Synonymy list
YearName and author
2011Astraspida Long p. 241
2019Astraspida Van Der Laan p. 15

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phylumChordataHaeckel 1847
superclassPteraspidomorphi(Goodrich 1909)
subclassAstraspida(Berg 1940)
subclassAstraspida(Berg 1940)

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.

No diagnoses are available
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 Caradoc to the top of the Llandovery or 460.90000 to 433.40000 Ma

Collections (16 total)

Time interval Ma Country or state Original ID and collection number
Caradoc460.9 - 449.5USA (Colorado) Astraspis desiderata, Astraspis splendens, Eriptychius americanus (10380)
Franklinian460.9 - 449.5USA (Colorado) Astraspis desiderata (155772) Astraspis desiderata, Eriptychius americanus (155756)
Franklinian460.9 - 449.5Canada (Ontario) Astraspis desiderata (90403 90404 90405 90406 90407 90408 90410 90411 90412) Eriptychius sp., Astraspis desiderata (90381 90409)
Richmondian449.5 - 443.7USA (Wyoming) Astraspis desiderata, Eriptychius americanus (65239)
Llandovery443.4 - 433.4Russian Federation Tesakoviaspis concentrica (90402)