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Arbacia improcera

Echinoidea - Arbacioida - Arbaciidae

Taxonomy
Echinus improcerus was named by Conrad (1843). It is a 3D body fossil.

It was recombined as Psammechinus improcerus by Stefanini (1912); it was recombined as Coelopleurus improcerus by Clark and Twitchell (1915); it was recombined as Arbacia improcera by Cooke (1941) and Kier (1972).

Synonymy list
YearName and author
1843Echinus improcerus Conrad p. 310
1912Psammechinus improcerus Stefanini p. 705
1915Coelopleurus improcerus Clark and Twitchell p. 180
1941Arbacia improcera Cooke p. 11
1972Arbacia improcera Kier p. 8

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
RankNameAuthor
classEchinoidea()
subclassEuechinoideaBronn 1860
—Echinacea()
orderArbacioida()
familyArbaciidae()
genusArbaciaGray 1835
speciesimprocera(Conrad 1843)

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.

†Arbacia improcera Conrad 1843
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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 mobilef
Life habit: epifaunalf
Diet: grazerf
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2009-09-10 13:28:35
Modified: 2009-09-10 15:29:25
Source: f = family, c = class, p = phylum
References: Smith 2009, Aberhan 1992, Kiessling 2004

Age range: base of the Zanclean to the top of the Calabrian or 5.33300 to 0.77400 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Zanclean5.333 - 3.6USA (North Carolina) Arbacia improcera (52582)
Zanclean5.333 - 3.6USA (Virginia) Arbacia improcera (155881 155887)
Zanclean5.333 - 3.6USA (South Carolina) Arbacia improcera (60940)
Piacenzian - Calabrian3.6 - 0.774USA (North Carolina) Arbacia improcera (61919)