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Olenaspella evansi
Taxonomy
Parabolinella evansi was named by Kobayashi (1936) [Parabolinella? evansi].
It was recombined as Olenaspella evansi by Palmer (1962).
It was recombined as Olenaspella evansi by Palmer (1962).
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Parabolinella evansi Kobayashi p. 92 figs. pl. 15, figs. 7-10 |
| 1962 | Olenaspella evansi Palmer pp. F-37 - F-38 figs. Plate 5, figures 4, 5, 7 |
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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
| Reference | Diagnosis | |
|---|---|---|
| A.R. Palmer 1962 | Members 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
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| Source: g = genus, f = family, c = class | |||||
| References: Harrington et al. 1959, Whittington et al. 1997, Aberhan et al. 2004 | |||||
Age range: Dresbachian or 497.00000 to 486.85000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Dresbachian | USA (Alaska) | Olenaspella evansi (64798 64800) | |
| Dresbachian | Canada (Yukon) | Olenaspella evansi (55224 55233 55277) |