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Hypodiadema elegans

Echinoidea - Pseudodiadematidae

Taxonomy
Hypodiadema elegans was named by Clark and Twitchell (1915). It is a 3D body fossil. Its type locality is Muddy and Clear forks of the Little Missouri River, which is in a Cretaceous marine sandstone in the Trinity Formation of Arkansas.

Synonymy list
YearName and author
1915Hypodiadema elegans Clark and Twitchell p. 52 figs. Plate XIV, Fig. 2a-b

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
RankNameAuthor
classEchinoidea()
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
—Carinacea
familyPseudodiadematidae
genusHypodiadema
specieselegans

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.

†Hypodiadema elegans Clark and Twitchell 1915
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: actively mobilec
Life habit: epifaunalc
Diet: grazerc
Diet 2: deposit feederc
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 12:05:24
Modified: 2010-02-12 04:00:29
Source: c = class, p = phylum
References: Kiessling 2004, Aberhan 1992

Age range: Cretaceous or 145.00000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Cretaceous145.0 - 66.0USA (Arkansas) Hypodiadema elegans (type locality: 203427)