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

Paragonaster

Asteroidea - Valvatida - Goniasteridae

Taxonomy
Paragonaster was named by Sladen (1889) [Sepkoski's age data: J u R]. It is extant.

It was assigned to Goniasteridae by Sladen (1889) and Clark and Downey (1992); and to Valvatida by Sepkoski (2002).

Synonymy list
YearName and author
1889Paragonaster Sladen
1992Paragonaster Clark and Downey p. 255
2002Paragonaster Sepkoski, Jr.

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

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumAsterozoa
RankNameAuthor
classAsteroidea
subclassAmbuloasteroidea
infraclassNeoasteroidea()
superorderValvatacea
orderValvatida
familyGoniasteridae
genusParagonaster

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
A. M. Clark and M.E. Downey 1992A genus of Goniasteridae with stellate form; abactinal plates paxilliform, covered with rounded granules; one median row of abactinals extending to terminal, usually somewhat rectangular in shape and wider than long; adambulacral furrow margin angular; apical oral spine unpaired; no pedicellariae.