| | | PAGE | | Introduction | 477 | | Methods and Acknowledgments | 478 | | Paleontology | 480 | | Phylogeny of the Species of the Genus | 484 | | Dispersal of the Several Species | 498 | | Subspeciation | 499 | | Accounts of Subspecies | 511 | | Dipodomys ordii | 511 | | | Dipodomys ordii richardsoni | 511 | | | Dipodomys ordii oklahomae | 514 | | | Dipodomys ordii compactus | 515 | | | Dipodomys ordii sennetti | 517 | | | Dipodomys ordii evexus | 518 | | | Dipodomys ordii medius | 519 | | | Dipodomys ordii obscurus | 521 | | | Dipodomys ordii terrosus | 523 | | | Dipodomys ordii fremonti | 524 | | | Dipodomys ordii uintensis | 525 | | | Dipodomys ordii sanrafaeli | 526 | | | Dipodomys ordii panguitchensis | 527 | | | Dipodomys ordii monoensis | 528 | | | Dipodomys ordii ordii | 530 | | | Dipodomys ordii luteolus | 533 | | | Dipodomys ordii extractus | 534 | | | Dipodomys ordii chapmani | 536 | | | Dipodomys ordii montanus | 538 |
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