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Echinalosia preovalis
Taxonomy
Strophalosia preovalis was named by Maxwell (1954). Its type specimen is UQ F15622, a shell (ventral valve), and it is not a trace fossil.
It was recombined as Wyndhamia preovalis by McCarthy et al. (1974); it was recombined as Echinalosia preovalis by Waterhouse (1983), Briggs (1998).
It was recombined as Wyndhamia preovalis by McCarthy et al. (1974); it was recombined as Echinalosia preovalis by Waterhouse (1983), Briggs (1998).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1954 | Strophalosia preovalis Maxwell pp. 542 – 543 figs. pl. 54 f. 1–11 |
| 1954 | Strophalosia pristina Maxwell p. 543 figs. Pl 54, figs 12-15 |
| 1974 | Wyndhamia preovalis McCarthy et al. p. 327 |
| 1977 | Echinalosia pristina McClung p. 576 |
| 1983 | Echinalosia preovalis Waterhouse p. 156 figs. pl. 1 f. 1–2 |
| 1998 | Echinalosia preovalis Briggs p. 76 figs. 40A-M |
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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.
†Echinalosia preovalis Maxwell 1954
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Invalid names: Echinalosia pristina Maxwell 1954 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W.G.H. Maxwell 1954 | Shell small, dorsal valve geniculate, trail of medium length. Shell outline subcircular. Cardinal area a t a low angle to the plane of the shell. Dorsal spines sparse. Ventral adductor platform short and low; teeth and dental callosities small, posterior wall low. Median septum long and high. |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004, Williams et al. 2000 | |||||
Age range: base of the Artinskian to the top of the Kungurian or 290.10000 to 274.40000 Ma
Collections (117 total)