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Roundyella dorsopapillosa
Taxonomy
Roundyella dorsopapillosa was named by Sohn (1954). Its type specimen is USNM 118378 and is a 3D body fossil. Its type locality is USNM703c, Old Word Ranch, Glass Mountains, which is in a Kungurian slope limestone in the Road Canyon Formation of Texas.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1954 | Roundyella dorsopapillosa Sohn p. 19 figs. Pl 1, figs 20-26; pl 4, figs 14,22 |
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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.
†Roundyella dorsopapillosa Sohn 1954
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 2 | 0.565 | 0.550 | 0.580 | 0.565 | 0.021 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Alvarez et al. 2008 | |||||
Age range: base of the Artinskian to the top of the Changhsingian or 290.10000 to 252.17000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | USA (Texas) | Roundyella dorsopapillosa (117948) | |
| Kungurian | USA (Texas) | Roundyella dorsopapillosa (type locality: 43517) | |
| Changhsingian | China (Fujian) | Roundyella dorsopapillosa (121288 121291) |