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Hemiaster ungula

Echinoidea - Spatangoida - Hemiasteridae

Taxonomy
Spatangus ungula was named by Morton (1833). It is a 3D body fossil. Its type locality is Deep Cut, Chesapeake and Delaware Canal (ANSP), which is in a Campanian marine sandstone in the Merchantville Formation of Delaware.

It was recombined as Hemiaster ungula by Clark and Twitchell (1915) and Cooke (1953).

Synonymy list
YearName and author
1833Spatangus ungula Morton
1915Hemiaster ungula Clark and Twitchell p. 93
1953Hemiaster ungula Cooke p. 34 figs. Pl 14, figs 10-14

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
—Carinacea
—Irregularia()
—Atelostomata
orderSpatangoida
familyHemiasteridae
genusHemiaster
speciesungula(Morton 1833)

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.

†Hemiaster ungula Morton 1833
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Diagnosis
No diagnoses are available