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Echinauris subquadrata
Taxonomy
Echinauris subquadrata was named by Cooper and Grant (1975). Its type specimen is USNM 152722, a shell (Articulated shell), and it is not a trace fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 1975 | Echinauris subquadrata Cooper and Grant p. 1016 figs. Pl 340, figs 1-22 |
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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.
†Echinauris subquadrata Cooper and Grant 1975
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 10.7 | 10.2 | 11.3 | 10.5 | 0.569 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Williams et al. 2000, Nesnidal et al. 2013 | |||||
Age range: base of the Gzhelian to the top of the Artinskian or 303.70000 to 279.30000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gzhelian | USA (Texas) | Echinauris subquadrata (43477 43487 43490 43522 43538) | |
| Asselian | USA (Texas) | Echinauris subquadrata (43474 43475) | |
| Sakmarian | USA (Texas) | Echinauris subquadrata (43571) | |
| Artinskian | USA (Texas) | Echinauris subquadrata (43533) |