Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy   Age range and collections

Hemiaster (heart urchin)

Echinoidea - Spatangoida - Hemiasteridae

Synonymy list
YearName and author
1847Hemiaster Agassiz and Desor p. 16
1966Hemiaster Fischer p. U557
1975Hemiaster Henderson p. 29
1987Hemiaster McNamara p. 336
1993Hemiaster Donovan p. 101
1994Hemiaster Ragaini p. 289
2002Hemiaster Sepkoski, Jr.
2003Hemiaster Berndt p. 84

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEchinozoa
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
infraclassAcroechinoidea()
Carinacea
Irregularia()
Atelostomata
orderSpatangoida
familyHemiasteridae
genusHemiaster

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
No diagnoses are available