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Stemmatias symmetricus
Taxonomy
Stemmatodus symmetricus was named by St John and Worthen (1875). It is considered to be a form taxon.
It was recombined as Stemmatias symmetricus by Hay (1899) and Hay (1902).
It was recombined as Stemmatias symmetricus by Hay (1899) and Hay (1902).
Synonymy list
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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.
†Stemmatias symmetricus St John and Worthen 1875
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Diagnosis
No diagnoses are available