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Kopella incerta
Taxonomy
Kopella incerta was named by Nikitina et al. (2006). Its type specimen is USNM 485176, a shell (complete shell), and it is a 3D body fossil. Its type locality is Locality 121. Eastern side of the Kopalysai valley, southern Chu-Ili Range, which is in an Abereiddian foreshore sandstone in the Uzunbulak Formation of Kazakhstan. It is the type species of Kopella.
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Kopella incerta Nikitina et al. pp. 190 - 193 fig. 30.3–7 |
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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.
†Kopella incerta Nikitina et al. 2006
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. I. Nikitina et al. 2006 | Shell convexiconcave to resupinate, impunctate; anterior commissure weakly uniplicate. Ventral valve with a high apsacline to catacline interarea bearing a large pseudodeltidium perforated apically and bordered by a perideltidium. Dorsal valve moderately convex with a low anacline interarea; notothyrium covered by chilidium. Radial ornament multicostellate. Ventral interior with short, stout teeth supported by short, widely divergent dental plates. Ventral muscle field large with diductor scars extending well beyond but not enclosing the narrow, subtriangular adductor scar. Dorsal interior with high, wide notothyrial platform, not supported by a septum. Cardinal process bilobed with closely set lobes. Socket plates wide, close to subparallel to the hinge line. Dorsal adductor scars weakly impressed, strongly elongated, arranged radially. |
Measurements
No measurements are available
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| Source: f = family, 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 (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Abereiddian | Kazakhstan | Kopella incerta (165482 type locality: 165539 165540 165541) |