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Helfriedella

Holothuroidea - Priscopedatidae

Taxonomy
Helfriedella was named by Kozur and Sadeddin (1990) [Sepkoski's age data: J Bath J Oxfo Sepkoski's reference number: 924]. It is not extant. It is considered to be a form taxon.

It was assigned to Priscopedatidae by Kozur and Sadeddin (1990); and to Dendrochirotida by Sepkoski (2002).

Synonymy list
YearName and author
1990Helfriedella Kozur and Sadeddin p. 356
2002Helfriedella Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
Life
RankNameAuthor
Prokaryota
phylumEchinodermata
classHolothuroidea()
familyPriscopedatidae
genusHelfriedella

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
H. Kozur and W. Sadeddin 1990Sieve-plate plane, subcircular, subquadratic or irreg- ular. Outer margin smooth or undulated. In the central field 4 large, cross-shaped, regularly arranged pores are present, sur- rounded by an irregular ring of moderately large pores. In places this pore-ring is reduced to 4 pores arranged intermittently to the large central pores.