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Symphysurus angustatus

Artiopoda - Asaphida - Nileidae

Taxonomy
Trilobites angustatus was named by Sars and Boeck (1838).

It was recombined as Symphysurus angustatus by Boeck (1838), Hoel (1999).

Sister species lacking formal opinion data
S. calvus, S. kientchensis, S. pater, S. pater, S. subquadratus

Synonyms
Synonymy list
YearName and author
1838Symphysurus angustatus Boeck
1869Symphysurus socialis Linnarsson
1999Symphysurus angustatus Hoel

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
classArtiopodaHou and Bergstrom
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderAsaphidaSalter 1864
superfamilyCyclopygoideaRaymond 1925
familyNileidaeAngelin 1854
genusSymphysurusGoldfuss 1843
speciesangustatus(Sars and Boeck 1838)

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.

†Symphysurus angustatus Sars and Boeck 1838
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Invalid names: Symphysurus socialis Linnarsson 1869 [synonym]
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: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-08 12:34:24
Modified: 2009-06-08 14:34:24
Source: g = genus, f = family, o = order, c = class
References: Hendy 2009, Aberhan et al. 2004, Hendy et al. 2009

Age range: base of the Varangu to the top of the Lancefieldian or 483.80000 to 474.90000 Ma

Collections (14 total)


Time interval Ma Country or state Original ID and collection number
Tremadocian - Floian486.85 - 471.3Norway Symphysurus angustatus (190970 190982)
Tremadocian - Floian486.85 - 471.3Norway (Oslo-Asker) Symphysurus angustatus (190979)
Tremadocian - Floian486.85 - 471.3Norway (Eiker-Sandsvær) Symphysurus angustatus (190921)
Tremadoc486.4 - 477.1Sweden Symphysurus angustatus (3107 3108)
Tremadoc486.4 - 477.1France (Montagne Noire) Symphysurus angustatus (201717)
Lancefieldian484.3 - 474.9Norway (Oslo-Asker) Symphysurus angustatus (190975)
Varangu483.8 - 482.9Norway (Oslo-Asker) Symphysurus angustatus (185891)
Varangu483.8 - 482.9Sweden Symphysurus angustatus (172663)
Varangu483.8 - 482.9Norway (Oslo) Symphysurus angustatus (3183)
Hunneberg482.9 - 475.6Sweden Symphysurus angustatus (3194)
Floian477.1 - 471.3France (Montagne Noire) Symphysurus angustatus (20827)
Billingen475.6 - 471.3Sweden Symphysurus angustatus (192718)