Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

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

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumEleutherozoa
Echinozoa()
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.

G. †Helfriedella Kozur and Sadeddin 1990
show all | hide all
Helfriedella mesojurassica Kozur and Sadeddin 1990
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.
Measurements
No measurements are available
Composition: high Mg calcitep
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: actively mobilec
Life habit: shallow infaunalc
Diet: detritivorec
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-29 11:09:31
Modified: 2010-02-11 06:36:04
Source: c = class, p = phylum
References: Aberhan 1992, Aberhan et al. 2004

Age range: Bathonian or 168.30000 to 166.10000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Bathonian168.3 - 166.1Jordan H. mesojurassica (94010)