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Trematorthis karasaiensis
Taxonomy
Trematorthis karasaiensis was named by Nikitina et al. (2006). Its type specimen is USNM 485016, a shell (complete shell), and it is a 3D body fossil. Its type locality is Locality 133. 4 kilometers southwest of Alakul Lake, which is in an Abereiddian open shallow subtidal limestone/siltstone in the Alakul Formation of Kazakhstan.
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Trematorthis karasaiensis Nikitina et al. pp. 202 - 203 fig. 36.1–5 |
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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.
†Trematorthis karasaiensis Nikitina et al. 2006
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. I. Nikitina et al. 2006 | Ventribiconvex with obtuse cardinal extremities; subcarinate ventral valve; radial ornament fascicostellate; cardinal process simple, blade-like and not fused with chilidial plates. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Hendy 2009, Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: Abereiddian or 468.00000 to 461.10000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Abereiddian | Kazakhstan | Trematorthis karasaiensis (type locality: 165483 165485) |