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Sismondia arnoldi

Echinoidea - Clypeasteroida - Laganidae

Taxonomy
Sismondia arnoldi was named by Clark and Twitchell (1915) [attributed to Twitchell only].

Synonymy list
YearName and author
1915Sismondia arnoldi Clark and Twitchell p. 182 figs. Plate LXXXV, Figs. 1a-b
1920Sismondia arnoldi Kew p. 61 figs. Plate 4, figures 2a, 2b

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
RankNameAuthor
—Carinacea
—Irregularia()
—Microstomata
—Neognathostomata
orderClypeasteroida
suborderScutellina()
infraorderLaganiformes
familyLaganidae()
genusSismondia
speciesarnoldi

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.

†Sismondia arnoldi Clark and Twitchell 1915
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Diagnosis
No diagnoses are available