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Sphaerexochus valcourensis

Trilobita - Phacopida - Cheiruridae

Sphaerexochus valcourensis was named by Shaw and Bolton (2011) [Includes all material from the Chazy Group as Sphaerexochus parvus (Shaw 1968).]. Its type specimen is NYSM 12417, a cephalon/head (cranidium), and it is a 3D body fossil.

Synonymy list
YearName and author
2011Sphaerexochus valcourensis Shaw and Bolton p. 434

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EubilateriaAx 1987
phylumArthropodaLatreille 1829
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCheirurinaHarrington and Leanza 1957
familyCheiruridaeHawle and Corda 1847
subfamilySphaerexochinaeOpik 1937
genusSphaerexochusBeyrich 1845

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.

No diagnoses are available
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: Harrington et al. 1959, Aberhan et al. 2004, Hendy 2009

Age range: Whiterockian or 471.80000 to 457.50000 Ma

Collections (16 total)

Time interval Ma Country or state Original ID and collection number
Whiterockian471.8 - 457.5USA (Vermont) Sphaerexochus parvus (103276 103281 103291 103292 103293 103295 103298)
Whiterockian471.8 - 457.5USA (New York) Sphaerexochus parvus (103000 103001 103002 103005 103017 103279 103282 103314 103316)