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Echinocardium orthonotum

Echinoidea - Spatangoida - Loveniidae

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

It was recombined as Amphidetus orthonotus by Tuomey and Holmes (1855); it was recombined as Echinocardium orthonotus by Clark (1904); it was recombined as Echinocardium orthonotum by Clark and Twitchell (1915) and Kier (1972).

Sister species lacking formal opinion data
E. depressum

Synonyms
Synonymy list
YearName and author
1843Spatangus orthonotus Conrad p. 327
1845Amphidetus virginianus Forbes p. 425
1848Amphidetus gothicus Ravenel p. 4 figs. figs. 1, 2
1855Amphidetus ampliforus McCrady p. 6
1855Amphidetus orthonotus Tuomey and Holmes figs. pl. 2, figs. 1-1c
1858Echinocardium virginianum Desor p. 408
1904Echinocardium orthonotus Clark p. 430
1912Echinocardium ampliforus Stefanini p. 707
1912Echinocardium gothicum Stefanini p. 707
1915Echinocardium orthonotum Clark and Twitchell p. 213
1915Echinocardium gothicus Clark and Twitchell p. 214
1942Echinocardium gothicum Cooke p. 60
1972Echinocardium orthonotum Kier p. 13

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
subclassEuechinoideaBronn 1860
RankNameAuthor
superorderAcroechinoidea()
—Carinacea
—Irregularia()
—Atelostomata
orderSpatangoida
suborderBrissidina
superfamilySpatangidea
familyLoveniidae
genusEchinocardiumGray 1825
speciesorthonotum(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.

†Echinocardium orthonotum Conrad 1843
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Invalid names: Echinocardium ampliforus McCrady 1855 [synonym], Echinocardium gothicum Ravenel 1848 [synonym], Echinocardium virginianum Forbes 1845 [synonym]
Diagnosis
No diagnoses are available