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Frizzellus

Holothuroidea - Etheridgellidae

Taxonomy
Frizzellus was named by Hampton (1958) [Sepkoski's age data: Tr J Oxfo Sepkoski's reference number: 2]. It is not extant. It is considered to be a form taxon.

It was assigned to Etheridgellidae by Hampton (1958), Deflandre-Rigaud (1962), Frizzell and Exline (1966), Kozur and Sadeddin (1990), Krainer and Mostler (1997); and to Arthrochirotida by Sepkoski (2002).

Synonymy list
YearName and author
1958Frizzellus Hampton pp. 309-310
1962Frizzellus Deflandre-Rigaud p. 65
1966Frizzellus Frizzell and Exline p. U665
1990Frizzellus Kozur and Sadeddin p. 354
1997Frizzellus Krainer and Mostler p. 15
2002Frizzellus Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumEleutherozoa
—Echinozoa()
classHolothuroidea()
familyEtheridgellidae
genusFrizzellus

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. †Frizzellus Hampton 1958
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†Frizzellus donofrioi Kozur and Sadeddin 1990
†Frizzellus irregularis Hampton 1958
Diagnosis
ReferenceDiagnosis
J. S. Hampton 1958Imperforate, flat to concavo-convex plates (disks), with irregular hexagonal to subcircular outline and denticulate margin; surface ornamentation of minute granular projections.
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: base of the Liasicus to the top of the Bathonian or 201.40000 to 165.30000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Liasicus201.4 - 199.5Austria F. irregularis (227858)
Bathonian168.2 - 165.3United Kingdom (England) F. irregularis (93826)
Bathonian168.2 - 165.3Jordan F. donofrioi (94010)
Late/Upper Bathonian168.2 - 165.3United Kingdom (England) F. irregularis (91449)