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Shumardia ctenata
Taxonomy
Shumardia ctenata was named by Robison and Pantoja-Alor (1968). Its type specimen is USNM 158936, a pygidium, and it is not a trace fossil. Its type locality is USNM 16002g, Tinu Formation, Oaxaca, Mexico - Robison and Pantoja-Alor 1968, which is in the Tremadoc of limestone/shale the Tinu Formation Mexico.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Shumardia ctenata Robison and Pantoja-Alor p. 797 |
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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.
†Shumardia ctenata Robison and Pantoja-Alor 1968
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997 | |||||