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Idiomesus levisensis

Trilobita - Asaphida - Ptychaspididae

Taxonomy
Stigmametopus levisensis was named by Rasetti (1944). Its type specimen is Laval Univ. 1126a, a cephalon/head (cranidium), and it is a 3D body fossil.

It was recombined as Idiomesus levisensis by Taylor (1976), Ludvigsen and Westrop (1986), Ludvigsen et al. (1989), Westrop (1995) and Adrain and Westrop (2004).

Sister species lacking formal opinion data
I. intermedius, I. tantillus

Synonymy list
YearName and author
1944Stigmametopus levisensis Rasetti p. 257
1976Idiomesus levisensis Taylor
1986Idiomesus levisensis Ludvigsen and Westrop
1989Idiomesus levisensis Ludvigsen et al.
1995Idiomesus levisensis Westrop
2004Idiomesus levisensis Adrain and Westrop p. 13

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderAsaphidaSalter 1864
superfamilyDikelocephaloidea(Miller 1889)
familyPtychaspididaeRaymond 1924
genusIdiomesusRaymond 1924
specieslevisensis()

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.

†Idiomesus levisensis Rasetti 1944
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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: 1.0 to < 10g
Adult width: 1.0 to < 10g
Spines: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: carnivorec
Vision: blindg
Created: 2009-06-10 08:30:53
Modified: 2009-12-14 01:09:46
Source: g = genus, o = order, c = class
References: Hendy 2009, Hendy et al. 2009, Aberhan et al. 2004

Age range: base of the Dolgellian to the top of the Sunwaptan or 492.50000 to 487.50000 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Sunwaptan493.5 - 487.5Canada (Newfoundland and Labrador) Idiomesus levisensis (81270 81271)
Sunwaptan493.5 - 487.5USA (Nevada) Idiomesus levisensis (235995)
Dolgellian492.5 - 485.4Canada (Quebec) Idiomesus levisensis (8933)
Trempealeauan492.5 - 485.4USA (Texas) Idiomesus levisensis (216016 216017 216018)
Trempealeauan492.5 - 485.4Canada (Quebec) Stigmametopus levisensis (224140)
Trempealeauan492.5 - 485.4Canada (Yukon) Idiomesus levisensis (55307)