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Physonemus asper
Taxonomy
Xystracanthus arcuatus was named by Leidy (1859).
It was recombined as Physonemus asper by Eastman (1903).
It was recombined as Physonemus asper by Eastman (1903).
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.
†Physonemus asper Leidy 1859
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Diagnosis
No diagnoses are available