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Sphaerexochus parvus

Trilobita - Phacopida - Cheiruridae

Taxonomy
Sphaerexochus parvus was named by Billings (1865) [Holotype apparently lost; Shaw and Bolton designate GSC 88624 as provisional lectotype.]. Its type specimen is GSC 1330 and is a 3D body fossil.

Sister species lacking formal opinion data

Synonymy list
YearName and author
1865Sphaerexochus parvus Billings
1925Sphaerexochus parvus Raymond p. 1489 figs. Plate 10, fig. 5

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCheirurinaHarrington and Leanza 1957
familyCheiruridaeHawle and Corda 1847
subfamilySphaerexochinaeOpik 1937
genusSphaerexochusBeyrich 1845
speciesparvusBillings 1865

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.

Sphaerexochus parvus Billings 1865
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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: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivoref
Vision: well-developedg
Created: 2009-06-09 12:26:29
Modified: 2010-01-10 03:55:17
Source: g = genus, f = family, c = class
References: Aberhan et al. 2004, Hendy 2009, Harrington et al. 1959

Age range: Whiterockian or 470.00000 to 457.30000 Ma

Collections (19 total)


Time interval Ma Country or state Original ID and collection number
Chazyan470.0 - 457.3USA (New York) Sphaerexochus parvus (56184 56212 56215 171704 172310 172317 172318 172320 172322 172323 172328 172329)
Whiterockian470.0 - 457.3Canada (Quebec) Sphaerexochus parvus (111361 111363 111431 111432 111441 111461 111464)