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Nevadia addyensis
Taxonomy
Nevadia addyensis was named by Okulitch (1951). Its type specimen is Geological Survey of Canada 1004, a cephalon/head (an almost complete cephalon, with attached genal spines), and it is a 3D body fossil. Its type locality is Addy, which is in a Cambrian marine quartzite in the Addy Quartzite Formation of Washington.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Nevadia addyensis Okulitch p. 406 figs. Plate 62, Figs. 1 - 2 |
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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.
†Nevadia addyensis Okulitch 1951
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| V. J. Okulitch 1951 | The species differs from Nevadia weeksi Walcott by having a longer and narrower glabella with a more pronounced forward taper. The preglabellar area is much nar- rower than in N. weeksi. The palpebral lobes of N. addyensis are narrower and closer to the glabella and at least partially separated from it by dorsal furrows. Nevadia cartlandi (Walcott) differs from the new species in the different position of its eyes. |