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Plagiura retracta

Trilobita - Ptychopariida - Ptychopariidae

Taxonomy
Plagiura retracta was named by Palmer and Halley (1979). It is a 3D body fossil. Its type locality is Groom Range, Carrara Fm, Pyramid Shale Mbr. (USGS 3546-CO), which is in a Delamaran shallow subtidal lime mudstone in the Carrara Formation of Nevada.

Synonymy list
YearName and author
1979Plagiura retracta Palmer and Halley p. 114 figs. Plate 6, figures 21, 24-27

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
familyPtychopariidaeMatthew 1887
genusPlagiura
speciesretracta

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.

Plagiura retracta Palmer and Halley 1979
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-09 21:26:05
Modified: 2009-06-09 23:26:05
Source: g = genus, f = family, c = class
References: Aberhan et al. 2004, Hendy 2009

Age range: Delamaran or 511.20000 to 506.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Delamaran511.2 - 506.5USA (Nevada) Plagiura retracta (type locality: 149562)