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

Phragmactinidae

Phragmactinidae

Taxonomy
Phragmactidae was named by Spencer (1951). It is not extant. Its type is Phragmactis.

It was corrected as Phragmactinidae by Spencer and Wright (1966) and Blake (2014).

It was assigned to Eophiuricae by Spencer (1951) and Owen (1965); to Proturina by Spencer and Wright (1966); and to Asterozoa by Blake (2014).

Subtaxa
Phragmactis (type genus), Swataria

Synonymy list
YearName and author
1951Phragmactidae Spencer p. 111
1965Phragmactidae Owen p. 547
1966Phragmactinidae Spencer and Wright p. U81
2014Phragmactinidae Blake p. 1164

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

RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
Ambulacraria
RankNameAuthor
phylumEchinodermata
subphylumEleutherozoa
Asterozoa()
familyPhragmactinidae()
familyPhragmactinidae()

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.

Fm. †Phragmactinidae Spencer 1951
show all | hide all
G. †Phragmactis Spencer 1940
hide
Phragmactis grayae Spencer 1940
G. †Swataria Blake 2014
hide
Swataria derstleri Blake 2014
Diagnosis
ReferenceDiagnosis
W. K. Spencer 1951Outer lateralia narrow, spines in single row at right angles to arm axis
Measurements
No measurements are available
Composition: high Mg calcitep
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: actively mobilesubp
Life habit: epifaunalsubp
Diet: carnivoresubp
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2009-09-21 12:38:42
Modified: 2009-09-21 14:38:42
Source: subp = subphylum, p = phylum
References: Bambach et al. 2007, Aberhan 1992

Age range: base of the Rawtheyan to the top of the Edenian or 455.80000 to 449.50000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Edenian460.9 - 449.5USA (Pennsylvania) Phragmactis sp. (34895) Swataria derstleri (165248)
Rawtheyan455.8 - 445.6United Kingdom (Scotland) Phragmactis grayae (73134)