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Weania semicircularis
Taxonomy
Aprathia semicircularis was named by Engel and Morris (1996) [= Phillipsia convexicaudata Mitchell 1922; p. 535–536, pl. 54, figs. 8–10.]. Its type specimen is AMF27747/AMF28010 (external mould of dorsal shield/internal mould of counterpart) and is a 3D body fossil. Its type locality is NU L1039. Glen William Road, 3km north of Clarence Town, which is in a Visean marine sandstone in the Flagstaff Formation of Australia.
It was recombined as Weania semicircularis by Vanderlaan and Ebach (2015).
It was recombined as Weania semicircularis by Vanderlaan and Ebach (2015).
Synonymy list
| Year | Name and author |
|---|---|
| 1996 | Aprathia semicircularis Engel and Morris pp. 121 - 124 figs. pl. 1, figs. 1–20, text-fig. 2. |
| 2015 | Weania semicircularis Vanderlaan and Ebach p. 47 fig. 6.5 |
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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.
†Weania semicircularis Engel and Morris 1996
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. A. Vanderlaan and M. C. Ebach 2015 | Cephalon semicircular, lacking genal spines. Glabella touching anterior border, constricted at γ. Nine thoracic segments with wide axis. Pygidium with 9–10 axial rings, 8 pleural ribs; pleural furrows long, extend almost to margin; inter-pleural furrows broad and shallow, do not reach the pygidial margin; no border furrow. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Whittington et al. 1997, Fortey and Owens 1999, Aberhan et al. 2004 | |||||