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Ctenophoraster downeyae

Asteroidea - Paxillosida - Astropectinidae

Taxonomy
Ctenophoraster downeyae was named by Blake and Zinsmeister (1979). It is not extant. It was considered monophyletic by Blake and Zinsmeister (1979).

Synonymy list
YearName and author
1979Ctenophoraster downeyae Blake and Zinsmeister p. 1150 figs. pl. 1
1988Ctenophoraster downeyae Blake and Zinsmeister p. 494 fig. 3.1
1998Ctenophoraster downeyae Blake and Aronson p. 345 fig. 7.6

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Asterozoa()
RankNameAuthor
classAsteroidea
subclassAmbuloasteroidea
infraclassNeoasteroidea()
superorderValvatacea
orderPaxillosida
familyAstropectinidae
genusCtenophoraster
speciesdowneyae

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.

†Ctenophoraster downeyae Blake and Zinsmeister 1979
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Diagnosis
ReferenceDiagnosis
D. B. Blake and W. J. Zinsmeister 1979A large Ctenophoraster species bearing a single prominent spine on each superomarginal, the remainder of the ossicle covered by stout spinelets. Paxillae arranged in regular rows of approximately 16 ossicles across the arm near the base, with paxillary pedicellariae probably absent. Inferomarginals probably absent. Inferomarginals probably with 3 lateral and 2 actinal surface spine rows. Actinolaterals relatively few beyong row adjacent to furrow, approximately 10 in a specimen of r (estimated) = 12mm. Ambulacral lacks progress for muscle band extending between superambulacral and dorsal adradial ends of ambulacral.
Measurements
No measurements are available
Composition: high Mg calcitef
Ontogeny: accretion, addition of partsp
Grouping: solitaryf
Environment: marinef
Locomotion: slow-movingf
Life habit: semi-infaunalf
Diet: carnivoref
Vision: limitedc
Reproduction: oviparousf
Dispersal: waterf
Dispersal 2: planktonicf
Created: 2007-10-02 03:56:56
Modified: 2009-10-10 10:31:00
Source: f = family, c = class, p = phylum
References: Blake 1990, Aberhan et al. 2004, Aberhan 1992

Age range: base of the Ypresian to the top of the Lutetian or 56.00000 to 41.30000 Ma

Collections (16 total)


Time interval Ma Country or state Original ID and collection number
Ypresian56.0 - 47.8Antarctica Ctenophoraster downeyae (7296 42446 81846 98515 203480)
Lutetian47.8 - 41.3Antarctica Ctenophoraster downeyae (98330 98416 98514 203483 203484 203486 203493 203498)
Lutetian - Priabonian47.8 - 33.9Antarctica Ctenophoraster downeyae (98517 203489 203502)