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Echanthus georgiensis

Echinoidea - Cassiduloida - Cassidulidae

Taxonomy
Echinanthus georgiensis was named by Clark and Twitchell (1915) [attributed to Twitchell only]. Its type specimen is USNM 165683b, a test, and it is a 3D body fossil. Its type locality is USGS Loc. 4033 - Parke's farm, Ellaville [Clayton Fm], which is in a Danian coastal siliciclastic in the Clayton Formation of Georgia. It is the type species of Echanthus.

It was recombined as Echanthus georgiensis by Cooke (1942), Cooke (1959).

Synonyms
Synonymy list
YearName and author
1915Echinanthus georgiensis Clark and Twitchell p. 130 figs. pl. 65, figs. 1a-d
1942Cassidulus (Galerolampas) fontis Cooke p. 35 figs. pl. 2, figs. 26-29
1942Echanthus georgiensis Cooke p. 37
1959Echanthus georgiensis Cooke p. 62

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
subclassEuechinoideaBronn 1860
RankNameAuthor
superorderAcroechinoidea()
—Carinacea
—Irregularia()
—Microstomata
—Neognathostomata
orderCassiduloida
suborderCassidulina
familyCassidulidae
genusEchanthus
speciesgeorgiensis()

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.

†Echanthus georgiensis Clark and Twitchell 1915
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Invalid names: Cassidulus (Galerolampas) fontis Cooke 1942 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calciteo
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: slow-movingo
Life habit: semi-infaunalo
Diet: detritivoreo
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 17:48:53
Modified: 2009-10-08 14:57:31
Source: o = order, c = class, p = phylum
References: Aberhan et al. 2004, Aberhan 1992, Kiessling 2004

Age range: base of the Danian to the top of the Aquitanian or 66.00000 to 20.45000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Danian66.0 - 61.66USA (Alabama) Echanthus georgiensis (155923 155924) Echinanthus georgiensis (155922)
Danian66.0 - 61.66USA (Georgia) Echanthus georgiensis (type locality: 155911)
Chattian - Aquitanian27.3 - 20.45USA (Florida) Cassidulus fontis (61129)