Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Sigmocheilus grata

Trilobita - Olenida - Pterocephaliidae

Taxonomy
Pterocephalina grata was named by Resser (1942).

It was recombined as Sigmocheilus grata by Palmer (1960).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1942Pterocephalina grata Resser p. 78
1960Sigmocheilus grata Palmer p. 90

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderOlenida
familyPterocephaliidaeKobayashi 1935
subfamilyPterocephaliinae
genusSigmocheilus
speciesgrata(Resser 1942)

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.

Sigmocheilus grata Resser 1942
show all | hide all
Diagnosis
No diagnoses are available
Measurements
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: 2009-12-13 23:06:36
Modified: 2009-12-14 01:06:36
Source: f = family, c = class
References: Whittington et al. 1997, Aberhan et al. 2004

Age range: Steptoean or 501.00000 to 485.40000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Steptoean501.0 - 485.4USA (Nevada) Sigmocheilus grata (75271 75272 110622)