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Ariaspididae
Taxonomy
Ariaspididae was named by Elliott and Swift (2010).
It was assigned to Heterostraci by Elliott and Swift (2010); and to Heterostraci by Van Der Laan (2019).
It was assigned to Heterostraci by Elliott and Swift (2010); and to Heterostraci by Van Der Laan (2019).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2010 | Ariaspididae Elliott and Swift p. 1874 |
| 2019 | Ariaspididae Van Der Laan p. 16 |
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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.
Fm. †Ariaspididae Elliott and Swift 2010
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G. †Ariaspis Denison 1963
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†Ariaspis arctata Elliott and Swift 2010
†Ariaspis ornata Denison 1963
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. K. Elliott and S. Swift 2010 | Dorsal shield relatively broad and weakly vaulted. No median process on rostral margin; preorbital processes strongly developed. Narrow lateral
laminae extend from orbit to posterolateral branchial openings; separated from dorsal surface by lateral angulations, developing into posterolateral points. Posterior margin transverse but for a posteromedian projection that may be scale-like. No epitega vis ible; elliptical ornamentation of sharp-crested dentine ridges. |