...Fig. 11.— Fossils recovered from late Miocene (Hemphillian) burrow fills at Happy Jack Mine (HJM) compared with specimens from Devil's Nest, Knox County, Nebraska (UNSM locality Kx-113). 1 mm scale bar for A–D, J. Geomyid teeth (A, C–F, H) from HJM. Pliogeomys teeth (B, G) from Kx-113. Sciurid...

..., Prodipodomys sp., Pliogeomys buisi, Cricetidae indet.), a rabbit (Leporidae indet.), a peccary (Catagonus brachydontus), a camel (Pleiolama vera), a rhinoceros (Rhinocerotidae indet.), and a horse (Pseudhipparion simpsoni). Biochronologically the Buis Ranch fauna is considered to represent the Hemphillian...

... ). This subfamily originated in the middle Miocene (ca. 14 Ma) and was represented by eight genera during the Neogene, among which Pliosaccomys , Reynoldsomys , Parapliosaccomys , and Pliogeomys became extinct (Flynn et al., 2008 ). The studied specimens were collected from silty-clayey sediments...

... ). First, we currently view the Saw Rock Canyon l.f. as earliest Blancan, rather than late Hemphillian, because we cannot confirm the records of a rhinoceros or Pliogeomys that have been published ( Hibbard, 1964 ; Prothero and Manning, 1987 ), and we have not collected either of these taxa from...

... will refrain from a formal recommendation until studies underway are completed. Some p4s are illustrated in Figure 2 . Note the U-shaped reentrants filled with cement. In Pliogeomys buisi ( Hibbard, 1954a ) from Buis Ranch, these reentrants tend to be V-shaped, and cement is lacking. FHSM VP-14201...

... 3.190 Paenemarmota barbouri 911 3.957 1,005 3.190 Spermophilus sp. A 915 3.938 993 3.385 Spermophilus sp. B 1,004 3.195 1,004 3.195 Spermophilus sp. C 893 4.041 1,005 3.190 Thomomys gidleyi 915 3.938 1,005 3.190 Pliogeomys parvus 926 3.886 1,005...