PBDB Taxon

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

Pentacrinitina

Crinoidea - Isocrinida

Taxonomy

Pentacrinitina was named by Gray (1842).

It was assigned to Isocrinida by Hess and Messing (2011) and Hess (2012).

Subtaxa

Eocomatulidae, Pentacrinitidae (syn. Pentacrinidae)

Synonymy list

Year	Name and author
1842	Pentacrinitina Gray
2011	Pentacrinitina Hess and Messing p. 42
2012	Pentacrinitina Hess p. 231

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
—	Ambulacraria
phylum	Echinodermata
subphylum	Blastozoa
class	Crinoidea	Miller 1821

Rank	Name	Author
subclass	Pentacrinoidea	Jaekel 1918
infraclass	Inadunata	(Wachsmuth and Springer 1897)
—	Cladida	(Moore and Laudon 1943)
—	Eucladida
infraorder	Articulata	(Miller 1821)
order	Isocrinida	Sieverts-Doreck 1952
suborder	Pentacrinitina	Gray 1842
suborder	Pentacrinitina	Gray 1842

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.

Subor. †Pentacrinitina Gray 1842

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Fm. †Eocomatulidae Simms 1988

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G. †Eocomatula Simms 1986

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†Eocomatula decagonalis Simms 1994

†Eocomatula interbrachiatus Blake 1876

Fm. †Pentacrinitidae Gray 1842

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G. †Pentacrinites Blumenbach 1804

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†Pentacrinites asteriscus Meek and Hayden 1858

†Pentacrinites ausichi Hess 2012

†Pentacrinites fossilis Blumenbach 1804

Invalid names: Pentacrinites briareus Miller 1821 [synonym], Pentacrinites britannicus von Schlotheim 1813 [objective synonym]

†Pentacrinites quenstedti Oppel 1856

†Pentacrinites subangularis Miller 1821

Invalid names: Extracrinus Austin and Austin 1847 [synonym], Heterocrinus Fraas 1858 [synonym], Pentacrinus Miller 1821 [nomen vanum]

G. †Seirocrinus Gislen 1924

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†Seirocrinus subangularis Miller 1821

Invalid names: Extracrinus lepidotus Austin and Austin 1847 [synonym], Pentacrinites briaroides Quenstedt 1852 [synonym], Pentacrinites colligatus Quenstedt 1852 [synonym], Pentacrinites fasciculosus von Schlotheim 1813 [synonym], Pentacrinus hiemeri Koenig 1825 [synonym]

Invalid names: Pentacrinidae Gray 1842 [replaced]

Diagnosis

No diagnoses are available