Key to the ground squirrels of the USA: Revision history

1 September 2026

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25 September 2025

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21 September 2025

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17 August 2025

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13 August 2025

• curprev 04:5804:58, 13 August 2025 Lsteger talk contribs 4,593 bytes +4,593 Created page with "WARNING! This key is currently under construction. This key to the ground squirrels of Arizona is based on Rickart and Yensen (1991). It was modified to only include species in the United States of America, and to accomodate recent taxonomic changes. ==1== * Molars brachydont; parastyle ridge on M1 and M2 joining protocone without an abrupt change of direction; confined to Nearctic region {{cl|2|2}} * Molars hypsodont; parastyle ridge on M1 and M2 joining protocone wi..."