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Mexicella obscurus

Trilobita - Ptychopariida

Taxonomy
Syspacephalus obscurus was named by Palmer and Halley (1979). It is a 3D body fossil. Its type locality is Grapevine Mountains (USGS 4140-CO), which is in a Delamaran shallow subtidal mudstone/limestone in the Carrara Formation of California.

It was recombined as Mexicella obscurus by Sundberg (2004).

Synonymy list
YearName and author
1979Syspacephalus obscurus Palmer and Halley p. 116 figs. Plate 7, figures 6-13, 15
2004Mexicella obscurus Sundberg pp. Appendix 2

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
suborderPtychopariinaRichter 1933
superfamilyPtychopariaceaMatthew 1887
genusMexicella
speciesobscurus()

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.

Mexicella obscurus Palmer and Halley 1979
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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: 10 to < 100g
Adult width: 1.0 to < 10g
Ribbing: noneg
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: deposit feedersubo
Created: 2009-02-26 11:48:07
Modified: 2009-02-26 13:48:07
Source: g = genus, subo = suborder, c = class
References: Aberhan et al. 2004, Fortey and Owens 1999, Hendy 2009

Age range: Delamaran or 511.20000 to 506.50000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Delamaran511.2 - 506.5USA (California) Syspacephalus obscurus (149618 149640)