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Sinopetalocrinus

Crinoidea - Cyathocrinida - Petalocrinidae

Taxonomy
Sinopetalocrinus was named by Mu and Lin (1987) [Sepkoski's age data: S Ldov]. It is not extant.

It was assigned to Cladida by Sepkoski (2002); and to Petalocrinidae by Mao et al. (2015).

Synonymy list
YearName and author
1987Sinopetalocrinus Mu and Lin
2002Sinopetalocrinus Sepkoski, Jr.
2015Sinopetalocrinus Mao et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
classCrinoideaMiller 1821
subclassPentacrinoideaJaekel 1918
RankNameAuthor
subclassInadunata(Wachsmuth and Springer 1897)
Cladida(Moore and Laudon 1943)
infraclassEucladida
superorderCyathoformes
orderCyathocrinida(Bather 1899)
superfamilyGasterocomaceaRoemer 1854
familyPetalocrinidaeWeller and Davidson 1896
genusSinopetalocrinusMu and Lin 1987

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
Y. Y. Mao et al. 2015 Horseshoe-shaped articular facets; fused brachials expand in width rapidly
for short distance, then are parallel sided and finally a convex distal margin; as many
as 40 distal ambulacra, adjacent arms not in lateral contact, ambulacral grooves on
oral and aboral surface.