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Mexicella robusta

Trilobita - Ptychopariida

Taxonomy
Mexicella robusta was named by Sundberg and McCollum (2000). Its type specimen is USNM 497924, a cephalon/head (nearly complete shield), and it is a 3D body fossil.

Synonymy list
YearName and author
2000Mexicella robusta Sundberg and McCollum p. 622 figs. Figure 13.1–13.10

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
EcdysozoaAguinaldo et al. 1997
Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
suborderPtychopariinaRichter 1933
superfamilyPtychopariaceaMatthew 1887
genusMexicella
speciesrobusta

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 robusta Sundberg and McCollum 2000
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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: Hendy 2009, Fortey and Owens 1999, Aberhan et al. 2004

Age range: base of the St Davids to the top of the Delamaran or 506.50000 to 505.30000 Ma

Collections (15 total)


Time interval Ma Country or state Original ID and collection number
Delamaran509.7 - 505.3USA (Nevada) Mexicella robusta (69456)
Delamaran509.7 - 505.3USA (California) Mexicella robusta (69498) Mexicella stator (149615)
Solvan508.2 - 504.5USA (Nevada) Mexicella robusta (9218 9219 9234 9235 9236 9242 9251 9261)
St Davids506.5 - 497.0USA (Nevada) Mexicella robusta (50093 50109 50329 50332)