| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Astraspida
Taxonomy
Astraspida was named by Berg (1940).
It was reranked as the subclass Astraspida by Long (2011), Nelson et al. (2016) and Van Der Laan (2019).
It was assigned to Pteraspidomorphi by Long (2011); and to Pteraspidomorpha by Nelson et al. (2016) and Van Der Laan (2019).
It was reranked as the subclass Astraspida by Long (2011), Nelson et al. (2016) and Van Der Laan (2019).
It was assigned to Pteraspidomorphi by Long (2011); and to Pteraspidomorpha by Nelson et al. (2016) and Van Der Laan (2019).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Astraspida Long p. 241 |
| 2016 | Astraspida Nelson et al. p. 27 |
| 2019 | Astraspida Van Der Laan p. 15 |
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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.
Subcl. †Astraspida Berg 1940
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Or. †Astrapidiformes Berg 1940
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Or. †Astraspidiformes Berg 1940
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Fm. †Tesakoviaspididae Karatajute-Talimaa and Smith 2004
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G. †Tesakoviaspis Karatajute-Talimaa and Meredith Smith 2004
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†Tesakoviaspis concentrica Karatajute-Talimaa and Meredith Smith 2004
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 Franklinian to the top of the Llandovery or 457.30000 to 433.40000 Ma
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Caradoc | USA (Colorado) | Astraspis desiderata, Astraspis splendens, Eriptychius americanus (10380) | |
| Franklinian | USA (Colorado) | Astraspis desiderata (155772) Astraspis desiderata, Eriptychius americanus (155756) | |
| Franklinian | Canada (Ontario) | Astraspis desiderata (90403 90404 90405 90406 90407 90408 90410 90411 90412) Eriptychius sp., Astraspis desiderata (90381 90409) | |
| Richmondian | USA (Wyoming) | Astraspis desiderata, Eriptychius americanus (65239) | |
| Llandovery | Russian Federation | Tesakoviaspis concentrica (90402) |