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Fieldaspis

Trilobita - Corynexochida - Zacanthoididae

Taxonomy
Fieldaspis was named by Rasetti (1951) [Sepkoski's age data: Cm Tojo-u Sepkoski's reference number: 80].

It was assigned to Corynexochida by Sepkoski (2002); and to Zacanthoididae by Palmer and Halley (1979), Jell and Adrain (2002) and Sundberg and McCollum (2003).

Synonymy list
YearName and author
1951Fieldaspis Rasetti
1979Fieldaspis Palmer and Halley p. 92
2002Fieldaspis Jell and Adrain p. 376
2002Fieldaspis Sepkoski
2003Fieldaspis Sundberg and McCollum p. 341

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderCorynexochida
suborderCorynexochinaKobayashi 1935
familyZacanthoididaeSwinnerton 1915
genusFieldaspisRasetti 1951

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. †Fieldaspis Rasetti 1951
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†Fieldaspis bilobata Rasetti 1951
†Fieldaspis celer Walcott 1917
†Fieldaspis superba Rasetti 1951
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: 10 to < 100g
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivoreo
Vision: well-developedf
Comments: BODY SIZE: Data from Williams et al. (2002).g
Created: 2009-06-02 14:46:51
Modified: 2009-06-02 16:46:51
Source: g = genus, f = family, o = order, c = class
References: Hendy 2009, Hendy et al. 2009, Aberhan et al. 2004

Age range: base of the Dyeran to the top of the Delamaran or 515.30000 to 506.50000 Ma

Collections (45 total)


Time interval Ma Country or state Original ID and collection number
Dyeran515.3 - 511.2Canada (Yukon Territory) F. bilobata (156238)
Delamaran511.2 - 506.5Canada (British Columbia) Crepicephalus celer, Kochaspis celer (50544) F. furcata (225264) F. furcata, F. bilobata (225263)
Delamaran511.2 - 506.5Canada (Northwest Territories) F. nahanniensis, F. superba (225268)
Delamaran511.2 - 506.5USA (California) F. sp. (149617)
Solvan510.2 - 504.5Canada (British Columbia) F. celer (56721) F. furcata (56702 56717 56718 56720) F. furcata, F. bilobata (56703) F. superba (56704 56722)
Middle Cambrian509.0 - 497.0Canada (British Columbia) F. furcata, F. bilobata, F. celer (188658)
St Davids509.0 - 497.0USA (Nevada) F. bilobata (50093 50094 50095 50107 50108 50109 50113 50114 50292 50293 50294 50295 50296 50327 50328 50329 50330 50331 50338) F. celer (50096 50337) F. sp. (50101 50324 50334) F. superba (50098 50099 50103 50298 50299 50333)