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Arcuolenellus
Taxonomy
Arcuolenellus was named by Palmer and Repina (1993) [Sepkoski's age data: Cm Tojo]. Its type is Olenellus arcuatus.
It was assigned to Bristoliinae by Palmer and Repina (1993); to Olenellidae by Whittington et al. (1997); and to Olenellida by Sepkoski (2002).
It was assigned to Bristoliinae by Palmer and Repina (1993); to Olenellidae by Whittington et al. (1997); and to Olenellida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1993 | Arcuolenellus Palmer and Repina p. 24 |
| 1997 | Arcuolenellus Whittington et al. p. 409 |
| 2002 | Arcuolenellus Sepkoski |
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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.
G. †Arcuolenellus Palmer and Repina 1993
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†Arcuolenellus arcuatus Palmer and Halley 1979
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. R. Palmer and L. N. Repina 1993 | Bristohinae with posterior margin of cephalon strongly and evenly curved back distally; genal spines short, at posterolateral corners, situated well behind level of occipital ring. Intergenal spine absent. Preglabellar field short. Width of interocular area about half width of glabella at L2. Posterior tips of ocular lobes opposite Ll. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Hendy et al. 2009, Aberhan et al. 2004, Whittington et al. 1997 | |||||