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Ptomaspis canadensis
Taxonomy
Ptomaspis canadensis was named by Denison (1963). Its type specimen is PU 17090, a partial skeleton, and it is a 3D body fossil. Its type locality is Beaver River, which is in a Silurian marine dolomite in Canada. It is the type species of Ptomaspis.
Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Ptomaspis canadensis Denison p. 110 |
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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.
†Ptomaspis canadensis Denison 1963
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. H. Denison 1963 | The length of the dorsal shield is 61 mm.; the ratio of width to length is .58. Dentine ridges average about 5 per millimeter. |
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| Reference: Kiessling 2004 | |||||