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Rhagasostoma operculatum
Taxonomy
Rhagasostoma operculatum was named by Koromyslova et al. (2018). Its type specimen is TsNIGR Museum 27/12582 and is a 3D body fossil. Its type locality is Kara-Kala, western Kopetdag, which is in a Campanian marine horizon in Turkmenistan.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Rhagasostoma operculatum Koromyslova et al. |
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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.
†Rhagasostoma operculatum Koromyslova et al. 2018
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. V. Koromyslova et al. 2018 | Colony erect, bifoliate. Autozooids subrectangular, zooidal boundaries raised; gymnocyst lacking; cryptocyst extensive; opesia terminal, semielliptical; putative calcified opercula rounded trapezoidal. Avicularia interzooidal; rostrum channeled with rounded tip, between conical in outline and spade-shaped, asymmetrical; proximal part rounded, shorter and wider than rostrum; opesia egg-shaped with thin articular ridges bearing two short teeth proximally and a short opesiular indentation between the teeth; opesiules lacking. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class, uc = unranked clade | |||||
| References: Smith et al. 2006, Nesnidal et al. 2013 | |||||