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Pentasteria liasica

Asteroidea - Paxillosida - Astropectinidae

Taxonomy
Pentasteria liasica was named by Villier et al. (2004). It is not extant. Its type specimen is Holotype MHNH 9003, paratype 9004-9007. Its type locality is Echinodermata, Marls of the Variabilis zone, Thouars, which is in a Toarcian offshore marl in France. It was considered monophyletic by Villier et al. (2004).

Synonymy list
YearName and author
2004Pentasteria liasica Villier et al. p. 818 figs. 3.1–7, 4.10, 4.11
2011Pentasteria liasica Gale p. 57

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
Asterozoa()
RankNameAuthor
classAsteroidea
subclassAmbuloasteroidea
infraclassNeoasteroidea()
superorderValvatacea
orderPaxillosida
familyAstropectinidae
genusPentasteria
speciesliasica

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.

Pentasteria liasica Villier et al. 2004
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Diagnosis
ReferenceDiagnosis
L. Villier et al. 2004Marginal plates are bordered by shallow lateral fascioles. Inferomarginal plates show a rectangular andhooked profile. The ornament consists of a network of rounded tubercles. Two rows of tubercles occur on the abradial side one of those made up of enlarged horseshoe-shaped tubercles. Abradial tubercle rows may be prolonged on the abactinal side by an alignment of enlarged tubercles. Superomarginal plates are square, nearly as long as wide in the arms. The external face is slightly convex and covered by tubercles smaller those of inferomarginals. The faces articulated with the abactinal plates are vertical to oblique.
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: Aberhan et al. 2004, Aberhan 1992, Blake 1990

Age range: Middle Toarcian or 182.00000 to 175.60000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Middle Toarcian182.0 - 175.6France (Poitou-Charentes) Pentasteria liasica (type locality: 31839)