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

Ambuloasteroidea

Asteroidea -

Synonymy list
YearName and author
2003Ambuloasteroidea Blake and Hagdorn p. 33
2017Ambuloasteroidea Blake et al. p. 324

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
RankNameAuthor
phylumEchinodermata
subphylumAsterozoa
classAsteroidea
subclassAmbuloasteroidea
subclassAmbuloasteroidea

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
D. B. Blake and H. Hagdorn 2003Asteroids with ambulacrals and adambulacrals alternating (offset), ambulacrals abutting two successive adambulacrals. More or less prominent winglike facets on ambulacrals support connective tissues extending to grooves on adambulacrals. Adradially, longitudinal
ambulacral-ambulacrat articular surfaces clearly differentiated. Dorsal podial pores well developed, therefore ambulacrals more or less hourglassshaped.
Adambulacrals broadly of inverted J-shape, linked ventrally by large interadambulacral muscle depressions; hook of inverted "J" abuts, overlaps successively; direction of overlap either distal or proximal. In ventral arm view of undistorted specimen, subsequent adambulacrals separated by muscle gap.