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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Archaeorthis major
Taxonomy
Archaeorthis major was named by Nikitina et al. (2006). Its type specimen is USNM 485040, a shell (complete shell), and it is a 3D body fossil. Its type locality is Locality 156. Kurzhaksai section, which is in an Abereiddian open shallow subtidal limestone/siltstone in the Uzunbulak Formation of Kazakhstan.
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Archaeorthis major Nikitina et al. pp. 198 - 199 figs. 32.9–14; 34 |
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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.
†Archaeorthis major Nikitina et al. 2006
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. I. Nikitina et al. 2006 | Shell transversely semioval, planoconvex to ventribiconvex, ramicostellate; delthyrium and notothyrium open; ventral muscle scars short, confined largely to delthyrial cavity; vascula media widely divergent; brachiophore bases subparallel to hinge line. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: Abereiddian or 468.00000 to 461.10000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Abereiddian | Kazakhstan | Archaeorthis major (165483 type locality: 165486 165487) |