| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Polythecalis grayi
Taxonomy
Polythecalis grayi was named by Douglas (1936).
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Polythecalis grayi Douglas p. 17 figs. Pl 2, fig 5 |
| 1965 | Polythecalis grayi Minato and Kato p. 227 |
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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.
†Polythecalis grayi Douglas 1936
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: Guadalupian or 274.40000 to 259.51000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Guadalupian | Iran | Polythecalis grayi (211734) |