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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Healdia simplex
Taxonomy
Healdia simplex was named by Roundy (1926).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1926 | Healdia simplex Roundy p. 8 figs. Pl 1, figs 11a-c |
| 1935 | Healdia simplex Kellett p. 142 figs. Pl 16, figs 2a-e |
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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.
†Healdia simplex Roundy 1926
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| carapace height | 1 | 0.350 | |||||
| valve height | 1 | 0.430 |
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| Source: o = order, c = class | |||||
| References: Jell and Adrain 2002, Kiessling 2004 | |||||
Age range: base of the Kasimovian to the top of the Changhsingian or 307.00000 to 252.17000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Pennsylvanian | USA (Texas) | Healdia simplex (210784) | |
| Kasimovian | USA (Kansas) | Healdia simplex (133146) | |
| Gzhelian | USA (Kansas) | Healdia simplex (133163) | |
| Roadian | Russian Federation | Healdia simplex (197598) | |
| Changhsingian | China (Fujian) | Healdia simplex (121204) |