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Asperdelia villosa
Taxonomy
Asperdelia villosa was named by Nikitina et al. (2006). Its type specimen is USNM 485157, a valve (dorsal internal mould), and it is a 3D body fossil. Its type locality is Locality 209. Kurzhaksai section, which is in an Abereiddian open shallow subtidal limestone/sandstone in the Uzunbulak Formation of Kazakhstan. It is the type species of Asperdelia.
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Asperdelia villosa Nikitina et al. p. 176 figs. 22.5–8; 23A |
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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.
†Asperdelia villosa Nikitina et al. 2006
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. I. Nikitina et al. 2006 | Shell concavoconvex with ventrally directed trail; shallow ventral sulcus and low dorsal median fold; radial ornament parvicostellate, commonly bearing comae; lacking dental plates and a median ridge in the ventral valve and with a median septum across the bema to the platform in the dorsal valve; cardinal process simple, undercut, fused with socket plates. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: Abereiddian or 468.00000 to 461.10000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Abereiddian | Kazakhstan | Asperdelia villosa (165488 type locality: 165558 165591 165595) |