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Kawina mercurius
Taxonomy
Cheirurus mercurius was named by Billings (1865). Its type specimen is GSC 668, a cephalon/head (cranidium), and it is a 3D body fossil.
It was recombined as Cydonocephalus mercurius by Whittington (1963); it was recombined as Kawina mercurius by Congreve and Lieberman (2011).
It was recombined as Cydonocephalus mercurius by Whittington (1963); it was recombined as Kawina mercurius by Congreve and Lieberman (2011).
Synonymy list
| Year | Name and author |
|---|---|
| 1865 | Cheirurus mercurius Billings p. 285 fig. 272 |
| 1963 | Cydonocephalus mercurius Whittington pp. 102 - 103 figs. Plate 30, figures 11-13, 19, 20 |
| 2011 | Kawina mercurius Congreve and Lieberman pp. Table S1 |
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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.
†Kawina mercurius Billings 1865
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. Billings 1865 | Glabella obtusely conical, convex, front half tumid, sides straight or gently convex, sub-parallel, front broadly rounded. Neck furrow extending all across j posterior pair of gla.bellar furrows nearly straight and 8uIJ.paraJlel with the neck furrow, extending all across, but the middle third not 80 deeply indented; the two anterior pairs are short and obscurely marked.
The eye appears to be small, close to the side of the glabella, and just opposite the end of the posterior glabcllar furrow. The cheeks seem to have the form. of C. vulcanus Associated with this species are some specimens only differing by having the last pair of glabellar flirrows not connected in the middle. |
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Hendy 2009, Aberhan et al. 2004 | |||||
Age range: Whiterockian or 470.00000 to 457.30000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Whiterockian | Canada (Newfoundland and Labrador) | Cydonocephalus mercurius (104752) |