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Piaziella pia

Trilobita - Ptychopariida - Ptychopariidae

Taxonomy
Ptychoparia pia was named by Walcott (1917). It is the type species of Piaziella.

It was recombined as Piaziella pia by Lochman (1947).

Synonymy list
YearName and author
1917Ptychoparia pia Walcott p. 93 figs. Plate 12, fig. 8
1947Piaziella pia Lochman pp. 69 - 70

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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
genusPiaziella
speciespia()

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.

†Piaziella pia Walcott 1917
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Diagnosis
ReferenceDiagnosis
C. Lochman 1947Cranidium subquadrate, wider than long; glabella conical with slightly rounded front, convexity moderate, regular; three pairs of distinct glabellar furrows, anterior pair short, ·nearly straight, second and third pairs longer and arcuate; dorsal furrow of medium width, clear along sides, shallower across front; occipital furrow narrow, ·distinct, deeper at sides; occipital ring of ated on midline through glabella; palpebral furrow narrow, shallow; ocular ridge narrow, distinct, curved; posterolateral limb one and one-third times as long as occipital ring, of medium width, crossed by . a broad, deep intramarginal furrow. Free cheek not known. Facial suture cutting anterior margin far out at sides, curving out to marginal furrow, then running straight back and in to and curving around palpebral lobes; thence running straight out and then curving back · to cut posterior margin. Outer surface of test finely granulated. Thorax and pygidium not known
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesf
Adult length: 10 to < 100f
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-11 20:00:46
Modified: 2009-12-19 06:30:51
Source: f = family, c = class
References: Hendy 2009, Aberhan et al. 2004

Age range: Early/Lower Cambrian or 538.80000 to 509.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Early/Lower Cambrian538.8 - 509.0Canada (Northwest Territories) Piaziella pia (156200)