The usefulness and accuracy of apparent polar wander paths may be increased by (1) grouping data into standard time intervals of about 22 m.y. duration rather than entire geologic periods; (2) insisting upon reliable paleomagnetic poles and excluding virtual geomagnetic poles as unit vectors; and (3) determining interval poles by modal rather than vectorial analysis. This method has been applied to paleomagnetic data from nearly 150 references to revise the post-Early Ordovician path for North America.

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