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Tonopahella walcotti

Trilobita - Ptychopariida

Taxonomy
Kochina walcotti was named by Sundberg and McCollum (2000). Its type specimen is USNM 497954, a cephalon/head (nearly complete shield), and it is a 3D body fossil. Its type locality is Litho #1, Split Mountain East Section, which is in a Delamaran offshore shale/mudstone in the Emigrant Formation of Nevada.

It was recombined as Tonopahella walcotti by Sundberg and McCollum (2003).

Synonymy list
YearName and author
2000Kochina walcotti Sundberg and McCollum p. 626 figs. Figure 15.1–15.6
2003Tonopahella walcotti Sundberg and McCollum pp. 982 - 983 figs. Plate 7, figure 7

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
suborderPtychopariinaRichter 1933
genusTonopahella
specieswalcotti()

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.

†Tonopahella walcotti Sundberg and McCollum 2000
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Diagnosis
ReferenceDiagnosis
F. A. Sundberg and L. B. McCollum 2000Cranidium with a preglabellar area 47
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: deposit feedersubo
Vision: well-developedg
Created: 2010-01-13 05:00:34
Modified: 2010-01-13 07:00:34
Source: g = genus, subo = suborder, c = class
References: Whittington et al. 1997, Fortey and Owens 1999, Aberhan et al. 2004

Age range: base of the Solvan to the top of the Delamaran or 510.20000 to 506.50000 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Delamaran511.2 - 506.5USA (Nevada) Kochina walcotti (type locality: 10587)
Delamaran511.2 - 506.5USA (California) Tonopahella walcotti (69497 69504)
Solvan510.2 - 504.5USA (Nevada) Kochina walcotti (9219 9235 9236 9237 9251 9261)