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Tetraromania

Echinoidea - Tithoniidae

Taxonomy
Tetraromania was named by Solovjev (1971) [Sepkoski's age data: K Berr K Barr Sepkoski's reference number: 1242].

It was corrected as Tetraramania by Sepkoski (2002).

It was assigned to Disasteroida by Sepkoski (2002); and to Tithoniidae by Barras (2007).

Synonymy list
YearName and author
1971Tetraromania Solovjev p. 64
2002Tetraramania Sepkoski, Jr.
2007Tetraromania Barras p. 159

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEchinozoa
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
infraclassAcroechinoidea()
Carinacea
Irregularia()
Atelostomata
familyTithoniidae
genusTetraromaniaSolovjev 1971

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.

Diagnosis
ReferenceDiagnosis
C. G. Barras 2007Tithoniids with ambulacral zones as wide as the interambulacral zones at the ambitus. The ambulacra are apetaloid, with microscopic pore pairs. Ambulacrum III lies in a shallow groove sub-ambitally and the peristome faces slightly towards the anterior. Plastron plating is meridosternous (cf. Solovjev 1971: fig. 30a). The apical disc is exocyclic and the periproct marginal (Solovjev 1971: fig. 30a). A small number of catenal plates may occur between the trivium and bivium.