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Sphaerexochus calvus

Trilobita - Phacopida - Cheiruridae

Taxonomy
Sphaerexochus calvus was named by Mc Coy (1846).

Sister species lacking formal opinion data
S. arcuatus, S. dimorphis, S. filius, S. lanei, S. lorum

Synonyms
Synonymy list
YearName and author
1845Sphaerexochus mirus Beyrich
1846Sphaerexochus calvus Mc Coy
1854Sphaerexochus angustifrons Angelin
1896Sphaerexochus latirugatus Reed

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCheirurinaHarrington and Leanza 1957
familyCheiruridaeHawle and Corda 1847
subfamilySphaerexochinaeOpik 1937
genusSphaerexochusBeyrich 1845
speciescalvusMc Coy 1846

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 calvus Mc Coy 1846
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Invalid names: Sphaerexochus angustifrons Angelin 1854 [synonym], Sphaerexochus latirugatus Reed 1896 [synonym], Sphaerexochus mirus Beyrich 1845 [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-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: base of the Rawtheyan to the top of the Ludfordian or 448.80000 to 422.70000 Ma

Collections (20 total)


Time interval Ma Country or state Original ID and collection number
Katian452.8 - 445.2Sweden (Dalarna) Sphaerexochus calvus (124939)
Katian - Hirnantian452.8 - 443.1Sweden (Dalarne) Sphaerexochus calvus (73413)
Pirgu449.5 - 445.2Sweden Sphaerexochus calvus (161788)
Pirgu - Hirnantian449.5 - 443.1Sweden (Dalarne) Sphaerexochus calvus (73408 73414)
Pirgu - Porkuni449.5 - 443.1Sweden (Dalarne) Sphaerexochus calvus (73462)
Cautleyan - Hirnantian449.2 - 443.1Ireland Sphaerexochus calvus (161780)
Rawtheyan448.8 - 445.2United Kingdom (England) Sphaerexochus calvus (161737)
Llandovery443.1 - 432.9Ukraine Sphaerexochus mirus (23343)
Sheinwoodian432.9 - 430.6Czech Republic Sphaerexochus mirus (14096)
Wenlock432.9 - 426.7Ukraine Sphaerexochus mirus (23350 23364)
Wenlock432.9 - 426.7Czech Republic Sphaerexochus mirus (14091)
Homerian430.6 - 426.7Czech Republic Sphaerexochus mirus (14065 14095 14097 14098)
Homerian430.6 - 426.7Canada (Northwest Territories) Sphaerexochus mirus (497)
Ludfordian425.0 - 422.7Uzbekistan Sphaerexochus mirus (216475 216476)