PBDB Taxon

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

Savignaster

Asteroidea

Taxonomy

Savignaster was named by Gale (2011). Its type is Savignaster wardi. It was considered monophyletic by Gale (2011) and Gale (2018).

It was assigned to Pterasteridae by Gale (2011), Gale (2011) and Rousseau et al. (2018); and to Pterasteridae by Gale (2018).

Species

S. septemtrionalis, S. wardi (type species)

Synonymy list

Year	Name and author
2011	Savignaster Gale p. 82
2018	Savignaster Gale p. 301
2018	Savignaster Rousseau et al. p. 9 figs. fig. 3

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
—	Ambulacraria
phylum	Echinodermata
subphylum	Eleutherozoa
—	Asterozoa	()
class	Asteroidea

Rank	Name	Author
subclass	Ambuloasteroidea
infraclass	Neoasteroidea	()
superorder	Surculifera
—	Spinulosida	()
—	Chevronida
—	Velatida	()
—	Pterasteridae	()
genus	Savignaster

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.

G. †Savignaster Gale 2011

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†Savignaster septemtrionalis Rousseau et al. 2018

†Savignaster wardi Gale 2011

Diagnosis

Reference	Diagnosis
A. S. Gale 2011	A pterasterid that bears megapaxillae with short stout, vase-shaped pedicels, distally hollow; adambulacrals with short, broad, rod-like lateral extensions, carrying fan-shaped, trellis-laike spines at their lateral margin.
A.S. Gale 2018	Pterasteridae in which the radials abactinals are trapezoidal and bear a short, abactinally expanding pedicel; primary radial ossicle carries a short proximal spur.

Measurements

No measurements are available

Composition:

high Mg calcitef

Ontogeny:

accretion, addition of partsp

Grouping:

solitaryf

Environment:

outer shelf, oceanic, marineo

Locomotion:

actively mobilef

Life habit:

epifaunalf

Depth habitat:

subthermoclineo

Diet:

carnivoref

Vision:

limitedc

Reproduction:

oviparouso

Dispersal:

watero

Dispersal 2:

planktonico

Created:

2009-09-04 12:22:18

Modified:

2009-09-04 14:22:18

Source: f = family, o = order, c = class, p = phylum

References: Aberhan et al. 2004, Aberhan 1992, Blake 1990

Age range: Late/Upper Oxfordian or 161.20000 to 155.70000 Ma

Collections: one only

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Oxfordian	161.2 - 155.7	France	S. wardi (61724)