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Pseudarchaster motutaraensis

Asteroidea - Valvatida - Goniasteridae

Taxonomy
Pseudarchaster motutaraensis was named by Eagle (1999). Its type specimen is AK72834, an other, and it is a 3D body fossil. Its type locality is Q11/f0041, Powell Bay [Nihotupu Fm], which is in an Altonian deep-water sandstone in the Nihotupu Formation of New Zealand.

Synonymy list
YearName and author
1999Pseudarchaster motutaraensis Eagle pp. 551-555 figs. fig. 2-5, 9

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

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
M.K. Eagle 1999Body stellate, plat. Low, tabulate abactinal plates in radial rows, extending along arm in more than one series, reaching terminal plate. Paxillae crowns weakly enlarged with numerous, small irregular patterned granules. Fasciolar grooves shallow. Superomarginals varying from wider than long in the interbrachial arc to longer than wide near the arm tip. External face convex to flat. Ornament of dense granules, larger in medial part of the plate. Inferomarginals wider than superomarginals.