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Hesperonomia planidorsalis
Taxonomy
Hesperonomia planidorsalis was named by Ulrich and Cooper (1936). It is a 3D body fossil. Its type locality is northeast shoulder of Fossil Mountain, 8.7 miles northeast of Lake Louise, which is in a Stairsian/Blackhillsian marine shale in the Outram Formation of Canada. It is the type species of Hesperonomia.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Hesperonomia planidorsalis Ulrich and Clarke |
| 1936 | Hesperonomia planidorsalis Ulrich and Cooper p. 621 |
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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.
†Hesperonomia planidorsalis Ulrich and Cooper 1936
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Hendy 2009, Aberhan et al. 2004 | |||||
Age range: Blackhillsian or 475.30000 to 471.30000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Stairsian - Blackhillsian | Canada (Alberta) | Hesperonomia planidorsalis (type locality: 186586) | |
| Blackhillsian | USA (Nevada) | Hesperonomia planidorsalis (104431) |