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Chatsworthia
Taxonomy
Chatsworthia was named by Smith and Jell (1990) [Sepkoski's age data: Cm u Sepkoski's reference number: 1121]. Its type is Chatsworthia spinosa.
It was assigned to Isorophida by Smith and Jell (1990), Sepkoski (2002).
It was assigned to Isorophida by Smith and Jell (1990), Sepkoski (2002).
Species
C. spinosa (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Chatsworthia Smith and Jell pp. 736 - 737 |
| 2002 | Chatsworthia Sepkoski |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. B. Smith and P. A. Jell 1990 | An isorophid with short, virtually straight ambulacra and undifferentiated oral cover plates. Cover plates stout and erect, forming a single alternating biseries; well separated when open. Biserial arrangement of flooring plates meeting perradially to floor the ambulacral groovy |
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan 1992, Aberhan et al. 2004 | |||||