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Olenaspella evansi

Trilobita - Olenida - Aphelaspidae

Taxonomy
Parabolinella evansi was named by Kobayashi (1936) [Parabolinella? evansi].

It was recombined as Olenaspella evansi by Palmer (1962).

Synonymy list
YearName and author
1936Parabolinella evansi Kobayashi p. 92 figs. pl. 15, figs. 7-10
1962Olenaspella evansi Palmer pp. F-37 - F-38 figs. Plate 5, figures 4, 5, 7

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderOlenida
familyAphelaspidae(Palmer 1960)
genusOlenaspella
speciesevansi(Kobayashi 1936)

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.

Olenaspella evansi Kobayashi 1936
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Diagnosis
ReferenceDiagnosis
A.R. Palmer 1962Members of Olenaspella with pygidium having 3 or 4 ring furrows behind articulating furrow on axis. Pleural regions with 2 or 3 shallow pleural furrows curved abruptly backward near inner edge of poorly defined narrow border, and extended onto bor- der. Shallow interpleural grooves apparent between first and second pleural segments near outer edge of pleural field. Margin with 2 or 3 pairs of spines. Most specimens with two pairs of spines, outer pair longest; each pair connected to posterior band of first or second pleural segment by low narrow ridge. Third pair of spines, if present, short, adjacent to inner edge of second pair of spines (pi. 5, fig. 3).
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
Spines: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-09 11:32:13
Modified: 2009-06-09 13:32:13
Source: g = genus, f = family, c = class
References: Aberhan et al. 2004, Whittington et al. 1997, Harrington et al. 1959

Age range: Dresbachian or 501.00000 to 485.40000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Dresbachian501.0 - 485.4USA (Alaska) Olenaspella evansi (64798 64800)
Dresbachian501.0 - 485.4Canada (Yukon) Olenaspella evansi (55224 55233 55277)