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Robertsonidra
Taxonomy
Robertsonidra was named by Osburn (1952). It is extant. It is the type genus of Robertsonidridae.
It was assigned to Petraliidae by Bassler (1953); and to Robertsonidridae by Gordon (2012).
It was assigned to Petraliidae by Bassler (1953); and to Robertsonidridae by Gordon (2012).
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.
G. Robertsonidra Osburn 1952
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Diagnosis
No diagnoses are available