Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Ariaspis

Pteraspidomorphi - Ariaspididae

Taxonomy
Ariaspis was named by Denison (1963) [Sepkoski's age data: "S (Wenl-u) - D (Sieg)?"]. Its type is Ariaspis ornata.

It was assigned to Cyathaspididae by Denison (1963); to Pteraspidomorphes by Sepkoski (2002); and to Ariaspididae by Elliott and Swift (2010).

Synonymy list
YearName and author
1963Ariaspis Denison p. 120
2002Ariaspis Sepkoski, Jr.
2010Ariaspis Elliott and Swift p. 1876

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
RankNameAuthor
subphylumVertebrata
classPteraspidomorphiGoodrich 1909
subclassHeterostraciLankester 1868
familyAriaspididae
genusAriaspis

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.

Diagnosis
ReferenceDiagnosis
R. H. Denison 1963The dorsal shield is relatively broad and weakly vaulted. There is no median process on the rostral margin, but the preorbital processes are strongly developed. Narrow lateral laminae extend from the orbits to the branchial openings and are separated fromtherestoftheshieldbysharpdownwardangulations. There are no postbranchial lobes, and the postero-lateral corners of the shield are small points. The posterior edge of the dorsal shield is nearly transverse except for the incorporation of a small, median, projecting scale. No separate epitega are distinguishable.