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Rhysostrophia occidentalis
Taxonomy
Rhysostrophia occidentalis was named by Ulrich and Cooper (1936). Its type specimen is USNM 91174, a valve, and it is a 3D body fossil. Its type locality is Ikes Canyon, Toquima Range, which is in a Whiterockian carbonate limestone in the Antelope Valley Formation of Nevada.
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Rhysostrophia occidentalis Ulrich and Cooper p. 630 |
| 1938 | Rhysostrophia occidentalis Ulrich and Cooper p. 242 figs. Plate 54 B, figures 3, 4, 7, 8, 12 |
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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.
†Rhysostrophia occidentalis Ulrich and Cooper 1936
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013, Hendy 2009 | |||||
Age range: Middle Ordovician or 471.30000 to 458.20000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Ordovician | USA (California) | Rhysostrophia occidentalis (425 226919 226920 226921) | |
| Whiterockian | USA (California) | Rhysostrophia occidentalis (104319 119484) | |
| Whiterockian | USA (Nevada) | Rhysostrophia occidentalis (type locality: 88946 104444 104455) |