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Trilobita - Ptychopariida - Catillicephalidae

Synonymy list
YearName and author
1924Acheilus Clark
1986Peracheilus Ludvigsen pp. 65 - 66
2002Peracheilus Jell and Adrain p. 423
2002Acheilus Sepkoski
2002Peracheilus Sepkoski

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EubilateriaAx 1987
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderPtychopariidaSwinnerton 1915
familyCatillicephalidaeRaymond 1938

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.

G. †Peracheilus Ludvigsen 1986
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Peracheilus marcoui Raymond 1924
Peracheilus spinosus Rasetti 1945
Invalid names: Acheilus Clark 1924 [replaced]
No diagnoses are available
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-12-19 03:50:16
Modified: 2009-12-19 05:50:16
Source: f = family, c = class
References: Whittington et al. 1997, Aberhan et al. 2004

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

Collections (19 total)

Time interval Ma Country or state Original ID and collection number
Merioneth497.0 - 485.4USA (Vermont) Acheilus laevis (6871)
Sunwaptan493.5 - 487.5Canada (Alberta) Acheilus oklahomensis (54093)
Sunwaptan493.5 - 487.5Canada (Newfoundland and Labrador) Acheilus confossus, P. latus, P. spinosus (81270) Acheilus laevis, P. latus (81271) P. insolitus (81286) P. latus (81272) P. quadratus (81285) P. spinosus, Acheilus levisensis (81269)
Dolgellian492.5 - 485.4Canada (Quebec) Theodenisia spinosa (8933)
Trempealeauan492.5 - 485.4Canada (Quebec) Acheilus brevis (224140) Acheilus communis (224134 224139) Acheilus communis, Acheilus limbatus (224136) Acheilus depressus (224149) Acheilus latus, Acheilus gibbus (224137) Acheilus marcoui (224141)
Trempealeauan492.5 - 485.4Canada (Newfoundland and Labrador) Acheilus monile (105871) Acheilus monile, Acheilus oryx (105870) Acheilus oryx (105856)