Medicine Pole Hills: Chadronian, North Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Anguimorpha informal MPH-1
Smith 2006 7 specimens
PTRM 5375, partial left dentary; 1824, partial right dentary; 5376, anterior left dentary fragment. Newly referred specimens in Smith 2011: PTRM 19212-14, 19461 (jaw fragments).
Saniwa edura n. sp. Smith 2006
Smith 2006 12 specimens
PTRM 5379 (holotype), partial left dentary; 5380, partial parietal. Newly referred specimens from Smith 2011: PTRM 19036 (8 teeth), 19155 (3 teeth), 19339 (3 teeth), 19360 (1 tooth), 19375 (7 teeth), 19437 (18 teeth), 19472 (2 teeth), 19516 (2 teeth), 19545 (2 teeth), 19552 (1 tooth).
Reptilia - Anguidae
Diploglossinae informal MPH-1
Smith 2006 12 specimens
PTRM 1807, left dentary fragment; 1823, jaw fragment; 5378, osteoderm. Newly referred by Smith 2011: PTRM 19207 (right maxilla fragment), 19208 (left maxilla fragment), 19209 (right maxilla fragment), 19346 (frontal fragment), 19358 (left quadrate; Figure 77B–D), 19428 (left dentary fragment), 19474 (right maxilla fragment; Figure 77A), 19591? (partial left dentary), 19784 (partial osteoderm; Figure 77E).
Anniellinae indet. Nopcsa 1928
Smith 2011
PTRM 19129, 19548
Anniellinae indet. Nopcsa 1928
Smith 2011
PTRM 19129, 19548
Helodermoides sp. Douglass 1903
Smith 2006 5 specimens
"sp. nov.?" PTRM 1825, left parietal fragment; 5647, 5709, cephalic osteoderms. Further referred specimens from Smith 2011: PTRM 19028 (right jugal fragment), 19549 (partial left jugal; Figure 80).
Gerrhonotinae indet. (Cope 1864)
Smith 2011
PTRM 19025, 19210, 19419, 19473, 19514, 19592
Reptilia
cf. Peltosaurus sp. Cope 1873
Smith 2006 10 specimens
PTRM 2606, partial left dentary; 2617, partial right maxilla; 5272, jaw fragment; 5381, right maxilla; 5685, right frontal fragment. New referred specimens from Smith 2011: PTRM 19211 (jaw fragment), 19364 (parietal fragment; Figure 79A, B), 194267 (partial right maxilla), 19427 (jaw fragment), 19470 (left dermarticular; Figure 79C, D).
Scincoidea informal MPH-1
Smith 2006 2 specimens
PTRM 5359, partial right dentary; 5358, right dentary fragment
Reptilia - Xantusiidae
"Palaeoxantusia" borealis Holman 1972
Smith 2006 89 specimens
PTRM 2720, partial left dentary; 5360, edentulous left dentary; 5361, partial right dentary; 2074, medial portion of right maxilla; 5284, left dentary fragment; 5288, partial right dentary; 2074, right maxilla fragment; 2713, partial right maxilla; 5298, right maxilla fragment; 5387, right dentary fragment. Newly referred by Smith 2011: PTRM 19024 (partial right frontal; Figure 75J, K), 19026 (partial left mandible; Figure 75L), 19150 (right dentary fragment), 19171, 19172 (partial left maxillae), 19173 (left maxilla fragment), 19174–19179 (right maxilla fragments), 19180 (partial premaxilla; Figure 75A), 19181 (premaxilla fragment), 19182 (partial premaxilla), 19183–19187 (partial left dentaries), 19188, 19189 (left dentary fragments), 19190–19195 (partial right dentaries), 19196–19200 (right dentary fragments), 19201, 19202 (jaw fragments), 19413 (left dentary fragment), 19414 (right dentary fragment), 19415, 19416 (left maxilla fragments), 19417 (right maxilla fragment), 19418 (partial premaxilla), 19439 (left dentary fragment), 19440, 19441 (partial right maxillae), 19442 (right maxilla fragment), 19443 (left maxilla fragment), 19469 (nearly complete left pterygoid; Figure 75G–I), 19477 (partial right dentary), 19478 (right dentary fragment), 19479, 19480 (partial left dentaries), 19481 (partial right maxilla), 19482 (left maxilla fragment), 19483, 19484 (partial left maxillae), 19485, 19486 (left maxilla fragments), 19487 (partial premaxilla), 19488 (premaxilla fragment), 19511 (partial right dentary), 19512, 19513 (right dentary fragments), 19517 (left dentary fragment), 19523 (left frontal fragment), 19528 (partial left dentary), 19529 (partial left maxilla), 19540, 19541 (partial right dentaries), 19542 (nearly complete right maxilla), 19543 (nearly complete right maxilla; Figure 75B–D), 19544 (partial right maxilla; Figure 75E, F), 19557, 19558 (partial left dentaries), 19559 (left dentary fragment), 19560 (partial right dentary), 19561 (right dentary fragment), 19562, 19563 (left maxilla fragments), 19564, 19565 (right maxilla fragments).
Reptilia - Colubridae
Colubridae indet. Oppel 1811
Smith 2013 9 elements
5 trunk vertebrae (PTRM 19641, 19643-19645, 19717), 4 postcloacals (PTRM 19645, 19646, 19718, 19779)
Reptilia - Boidae
Calamagras weigeli Holman 1972
Smith 2013 80 elements
1 ?pterygoid fragment (PTRM 19130 - tentatively assigned to this taxon), 1 left dentary fragment (PTRM 19476 - tentatively assigned to this taxon), 68 trunk vertebrae (PTRM 19593, 19594, 19596, 19598, 19600-19602, 19605, 19606, 19610, 19612-19614, 19616, 19617, 19619, 19620, 19628, 19648-19650, 19653-19666, 19673, 19679, 19682-19687, 19691, 19701, 19702, 19708, 19710-19715, 19720, 19722, 19723, 19738, 19744, 19748-19750, 19762-19766, 19768, 19778), 10 postcloacal vertebrae (PTRM 19608, 19609, 19611, 19651, 19680, 19681, 19690, 19709, 19753, 19754)
Reptilia - Loxocemidae
Ogmophis compactus Lambe 1908
Smith 2013 79 elements
1 parabasisphenoid (PTRM 19350), 1 left quadrate (PTRM 19378), 66 trunk vertebrae (PTRM 19615, 19621-19624, 19626, 19627, 19629, 19631-19640, 19642, 19669-19671, 19675-19678, 19692, 19695-19700, 19703-19707, 19719, 19721, 19724, 19725, 19729-19737, 19739, 19741, 19742, 19745-19747, 19755-19760, 19780-19782), 11 postcloacal vertebrae (PTRM 19625, 19630, 19647, 19672, 19686, 19694, 19726, 19727, 19752, 19761, 19767)
Reptilia
Coniophis sp. Marsh 1892
Smith 2013 6 elements
nomen dubium belonging to Serpentes
5 trunk vertebrae (PTRM 19505, ?19603, 19652, 19716, and 19743), 1 postcloacal (PTRM 19740)
Reptilia - Agamidae
Tinosaurus sp. (Marsh 1872)
Smith 2006 1 specimen
synonym of Saniwa
PRTM 2038, jaw fragment
Reptilia - Iguanidae
Iguanidae informal MPH-1
Smith 2006 9 specimens
PTRM 1822, left dentary; 2605, right dentary fragment; 2743, edentulous left dentary; 5231, partial right dentary; 5334, left dentary fragment; 5352, partial right dentary; 5353, right dentary fragment; 5354, partial right dentary; 5724, maxilla fragment
    = Queironius praelapsus n. gen., n. sp. Smith 2011
Smith 2011
Queironius praelapsus Smith 2011
Smith 2011
Tuberculacerta pearsoni n. gen., n. sp. Smith 2006
Smith 2006 5 specimens
PTRM 5296 (holotype), left dentary; 1432, left dentary fragment; 5326, right dentary; 5355, left dentary; 1429, right maxilla. Referred specimens from Smith 2011: PTRM 19020 (partial right maxilla), 19021 (partial right maxilla; Figure 72D–F), 19022 (premaxilla; Figure 72A–C), 19023 (partial left postorbital; Figure 73I–J), 19051 (left maxilla fragment), 19052 (maxilla fragment), 19116 (partial frontal; Figure 73E, F), 19135 (partial right ectopterygoid; Figure 73A–D), 19145 (maxilla fragment), 19146 (left maxilla fragment), 19263 (partial right dentary), 19292 (partial right dentary), 19293 (partial left maxilla), 19294 (left maxilla fragment), 19295 (right maxilla fragment), 19335 (partial right jugal), 19411 (right dentary fragment), 19412 (partial right maxilla), 19450 (partial left maxilla; Figure 72G, H), 19532 (partial right maxilla), 19538 (right jugal fragment; Figure 73G, H), 19539 (partial left maxilla), 19555 (left maxilla fragment), 19588 (partial right dentary).
Iguanidae informal MPH-3
Smith 2006
PTRM 5357, partial left dentary; 5178, partial left dentary; 5267, left dentary fragment
    = Oreithyia oaklandi Smith 2011
Smith 2011
(see re-ID entry under Aciprion sp.)
cf. Aciprion sp. Cope 1873
Smith 2006 105 specimens
PTRM 5198, right dentary; 2054, left dentary fragment; 2594, partial left dentary; 5202, partial right dentary; 2095, left maxilla fragment; 5401, left maxilla fragment; ?5396, left maxilla fragment
    = Oreithyia oaklandi n. gen., n. sp. Smith 2011
Smith 2011
replaced by Oreithyia oaklandi
PTRM 5198 (holotype), right dentary. All specimens referred to cf. Aciprion sp. and to Iguanid MPH-3 by Smith (2006a) as well as the following: PTRM 19000 (partial parietal; Figure 63), 19001 (partial frontal; Figure 57), 19002 (partial left maxilla), 19004 (partial premaxilla; Figure 49A–C), 19005 (partial left postorbital; Figure 61), 19006 (partial frontal), 19007 (partial left jugal; Figure 59), 19015 (right prefrontal; Figure 55), 19033 (right ectopterygoid; Figure 53A–C), 19053 (partial left dentary), 19054 (partial right dentary), 19055 (left maxilla fragment), 19056 (dentary fragment), 19058, 19059 (jaw fragments), 19060 (left maxilla fragment), 19062 (partial right maxilla; Figure 51K), 19067 (premaxilla fragment), 19080 (left dermarticular fragment; Figure 70D), 19082 (partial right coronoid; Figure 68), 19084 (left jugal fragment), 19089 (right jugal fragment), 19111 (left prefrontal fragment), 19114, 19115 (frontal fragments), 19133 (partial right ectopterygoid; Figure 53D, E), 19140 (partial left maxilla; Figure 51D–F), 19142 (left maxilla fragment), 19143 (right dentary fragment), 19144 (jaw fragment), 19239 (right maxilla fragment; Figure 51A–B), 19256 (partial premaxilla), 19257–19259 (partial left dentaries), 19260 (left dentary fragment), 19261 (partial right dentary), 19264, 19265 (right dentary fragments), 19266 (right maxilla fragment), 19268–19270 (right maxilla fragments), 19271 (partial left maxilla; Figure 51G–I), 19272 (partial left maxilla), 19273–19276 (left maxilla fragments), 19277 (dentary fragment), 19278 (jaw fragment), 19279 (right maxilla fragment), 19280 (right dentary fragment), 19281 (right maxilla fragment), 19282 (left dentary fragment), 19283, 19284 (jaw fragments), 19285 (left maxilla fragment), 19286 (dentary fragment), 19288, 19290 (jaw fragments), 19291 (maxilla fragment), 19325 (partial right compound bone; Figure 70A–C), 19338 (partial left ectopterygoid), 19381 (frontal fragment), 19397, 19399 (partial right dentaries), 19400 (left dentary fragment; Figure 67A–C), 19402 (partial left dentary), 19404, 19405 (left maxilla fragments), 19406, 19407 (dentary fragments), 19408 (jaw fragment), 19449 (partial left jugal), 19451 (partial right maxilla), 19452, 19453 (left maxilla fragments), 19454 (partial right maxilla), 19456 (jaw fragment), 19462 (partial right dentary; Figure 67D), 19504 (partial left dentary), 19505 (right dentary fragment), 19506 (jaw fragment), 19507 (right maxilla fragment), 19534 (partial premaxilla; Figure 49D–F), 19551 (left dermarticular fragment), 19573 (partial right maxilla; Figure 51C), 19574 (partial left maxilla), 19575 (partial right maxilla), 19576 (partial right maxilla; Figure 51J), 19577, 19578 (right maxilla fragments), 19585 (partial left dentary), 19586 (partial right dentary). PRTM 19334 (partial right squamosal).
Cypressaurus sp. Holman 1972
Smith 2006 25 specimens
PTRM 2623, partial left dentary; 5321, dentary fragment. Smith 2011 adds the 2 Iguanid MPH-2 and -4 specimens to this taxon and includes new referred specimens: PTRM 19063 (maxilla fragment), 19085 (partial left jugal; Figure 74G–I), 19215 (partial right dentary), 19235 (left maxilla fragment; Figure 74E, F), 19267 (right maxilla fragment; Figure 74A–D), 19296 (jaw fragment), 19297, 19298 (right dentary fragments), 19299 (left dentary fragment), 19300 (jaw fragment), 19301 (right maxilla fragment), 19409 (right maxilla fragment), 19468 (left jugal fragment), 19494 (right jugal fragment), 19502 (left maxilla fragment), 19509 (partial left dentary), 19550 (partial right dentary), 19556 (right dentary fragment), 19582 (partial right dentary; Figure 74J, K), 19589 (right dentary fragment), 19590 (partial left dentary).
Iguanidae informal MPH-2
Smith 2006
PTRM 2602, right dentary
    = Cypressaurus sp. Holman 1972
Smith 2011
(see re-ID entry under Cypressaurus sp.)
Iguanidae informal MPH-4
Smith 2006
PTRM 2041, partial left dentary
    = Cypressaurus sp. Holman 1972
Smith 2011
(see re-ID entry under Cypressaurus sp.)
Reptilia - Polychrotidae
Polychrus charisticus n. sp. Smith 2006
Smith 2006 81 specimens
PTRM 1841 (holotype), partial right maxilla; PTRM 2637, right dentary fragment; 1990, partial right dentary; 2596, left dentary fragment; 1418, right dentary fragment; 2673, right dentary fragment; 5351, edentulous right dentary; 5400, jaw fragment; 1997, right maxilla fragment; 5372, left maxilla fragment; 5373, right maxilla fragment; 5374, partial right maxilla
    = Sauropithecoides charisticus n. gen., n. sp. Smith 2006
Smith 2011
(same specimens as original designation) Additional: Newly referred specimens. Both specimens of Xenosaurid MPH- 1 as well as the following: PTRM 19003 (right prefrontal), 19008 (frontal fragment; Figure 12D–F), 19009 (frontal fragment; Figure 12A–C), 19010 (partial parietal; Figure 18A–C), 19011 (partial parietal), 19012 (partial parietal; Figure 18D–F), 19014 (partial left postorbital; Figure 16), 19037 (partial premaxilla; Figure 2D), 19038 (premaxilla; Figure 2A–C), 19039 (partial premaxilla; Figure 2E), 19040, 19041 (partial right dentaries), 19042 (premaxilla fragment), 19043 (right maxilla fragment), 19044 (jaw fragment), 19045 (partial left maxilla; Figure 4E), 19046 (left maxilla fragment), 19078 (partial left dermarticular), 19079 (partial dermarticular; Figure 24), 19087 (left jugal fragment; Figure 14), 19091 (partial left ectopterygoid; Figure 8B–E), 19094 (partial right ectopterygoid; Figure 8A), 19109 (partial left prefrontal), 19132 (partial right squamosal; Figure 20), 19138 (left maxilla fragment; Figure 4D), 19217, 19218 (partial left maxillae), 19219, 19220, 19221, 19222 (left maxilla fragments), 19223, 19224 (right maxilla fragments), 19225 (jaw fragment), 19226 (right maxilla fragment), 19227 (partial left dentary), 19228 (left dentary fragment), 19229 (dentary fragment), 19230 (jaw fragment), 19231 (dentary fragment), 19232 (jaw fragment), 19323 (partial right coronoid; Figure 22), 19326 (left articular fragment), 19349 (partial left prefrontal), 19382 (jaw fragment), 19384 (left dentary fragment), 19385 (right dentary fragment), 19386, 19387 (left maxilla fragments), 19388 (right dentary fragment), 19389 (premaxilla fragment), 19390 (right dentary fragment), 19391 (jaw fragment), 19392 (right maxilla fragment), 19459 (partial premaxilla), 19460, 19475 (left maxilla fragments), 19496 (partial right maxilla; Figure 4F), 19497 (right maxilla fragment), 19498 (left maxilla fragment), 19518 (partial left maxilla), 19519, 19522 (right maxilla fragments), 19531 (premaxilla fragment), 19553 (partial right nasal; Figure 6), 19579 (partial right maxilla; Figure 4A–C), and 19580 (right maxilla fragment).
Xenosauridae informal MPH-1
Smith 2006
PRTM 1986, premaxilla; 5371, dermal skull bone fragment
    = Sauropithecoides charisticus n. gen., n. sp. Smith 2006
Smith 2011
(same two specimens as original designation; see re-ID entry under Polychrus charisticus)
Reptilia - Rhineuridae
cf. Rhineura sp. Cope 1861
Smith 2006 62 specimens
PTRM 5248, left dentary; 5322, right dentary fragment; 5725, left dentary; 1422, 1434, 1438, 1443-5, 1553, 1796, 1812-3, 1828, 1831, 1851, 2023, 2042, 2067, 5171, 5180, 5216, 5235, 5238, 5348, twelve specimens; 5362-3, 5384-6, 5668, 5673-4, 5686-8, trunk vertebrae. New specimens from Smith 2011: PTRM 19128 (precaudal vertebra), 19147 (partial right dentary), 19147, 19148 (partial right dentaries), 19149 (right dentary fragment), 19163 (nearly complete left dentary), 19164 (partial left dentary), 19165 (partial right dentary), 19166 (partial left dentary), 19167 (right dentary fragment), 19168 (left dentary fragment), 19169 (jaw fragment), 19170 (left maxilla fragment), 19421 (partial right maxilla), 19424 (nearly complete left dentary), 19425, 19489 (partial right dentaries), 19490, 19491 (left dentary fragments), 19492 (jaw fragment), 19527 (partial right maxilla), 19546, 19547 (precaudal vertebrae), 19566 (partial left dentary), 19567 (right dentary fragment), 19568 (left maxilla fragment).
cf. Spathorhynchus sp. Berman 1973
Smith 2006 26 specimens
PTRM 1793, right dentary; 1825, 5364-70, 5638-9, 5662, 5667, 5671-2, 5691, trunk vertebrae. New referrals from Smith 2011: PTRM 19160 (partial left dentary), 19161, 19162 (partial right dentaries), 19216 (partial right maxilla), 19420 (partial left dentary), 19422? (right maxilla fragment), 19423 (jaw fragment), 19524–19526 (partial vertebrae).
Mammalia - Leptictidae
Leptictis sp. Leidy 1868
    = Leptictidae indet. Gill 1872
Alroy 2002
    = Leptictis cf. acutidens Douglass 1902
Kihm and Schumaker 2004
Mammalia - Apatemyidae
Sinclairella sp. Jepsen 1934
Mammalia - Macroscelidea - Amphilemuridae
cf. Ankylodon sp. Patterson and McGrew 1937
Mammalia - Chiroptera
Chiroptera indet. Blumenbach 1779
a bat
Mammalia - Carnivora - Amphicyonidae
Daphoenus sp. Leidy 1853
Mammalia - Carnivora - Canidae
Hesperocyon cf. gregarius (Cope 1873)
"gregarias"
Mammalia - Perissodactyla - Equidae
Mesohippus cf. propinquus Lambe 1905
"proprinquus"
Mesohippus cf. westoni (Cope 1889)
"westonii"
Mammalia - Perissodactyla - Rhinocerotidae
Trigonias sp. Lucas 1900
Mammalia - Perissodactyla
Toxotherium sp. Wood 1961
Mammalia - Perissodactyla - Brontotheriidae
Brontotheriidae indet. (Marsh 1873)
Mammalia - Camelidae
cf. Poebrotherium sp. Leidy 1847
Mammalia - Anthracotheriidae
Anthracotheriidae indet. Leidy 1869
Mammalia - Leptomerycidae
Leptomeryx cf. yoderi Schlaikjer 1935
confirmed by Heaton and Emry 1996
Mammalia - Leptochoeridae
Stibarus montanus Matthew 1903
Mammalia - Soricidae
cf. Domnina sp. Cope 1873
Kihm and Schumaker 2008
PTRM 14680
Domnina cf. thompsoni Simpson 1941
Kihm and Schumaker 2008
PTRM 10272, 10736, 10274, 10276, 14126, 14124, 14127, 10740, 10703, 14681, 5831, 10273
Domnina sp. Cope 1873
    = Domnina sagittariensis Kihm and Schumaker 2008
Kihm and Schumaker 2008
Domnina cf. D. thompsoni
Domnina sagittariensis n. sp. Kihm and Schumaker 2008
Kihm and Schumaker 2008
PTRM 5553, 7889, 10734, 10700, 2025, 7415, 5833, 7284, 7705, 10764, 10737, 4921, 7800, 16020, 7283, 7289, 7416, 7437, 10741, 14125, 4949, 8316, 10742, 14682, 10284, 10275, 10743, 5125, 10739; 4827, 5549, 10735, 10738
Mammalia - Geolabididae
Centetodon chadronensis Lillegraven et al. 1981
Centetodon magnus (Clark 1936)
Mammalia - Micropternodontidae
Micropternodus cf. borealis Matthew 1903
Kihm and Schumaker 2004
No Specimen Numbers Cited
Mammalia - Apternodontidae
Apternodus sp. Matthew 1903
Kihm and Schumaker 2004
No Specimen Numbers Cited
Mammalia - Oligoryctidae
Oligoryctes cf. cameronensis Hough 1956
Kihm and Schumaker 2004
No Specimen Numbers Cited
Mammalia - Rodentia - Aplodontidae
Prosciurinae indet. Wilson 1949
Kihm 2013
PTRM 4962, 5051, 4901
Prosciurus vetustus (Matthew 1903)
Kihm 2013
original and current combination Sciurus (Prosciurus) vetustus
PTRM 11046, 14177, 5572, 8339, 11047, 11051, 7392, 8010, 11039, 14607, 15022, 5052, 5074, 6212, 10950, 7921, 7720, 8340, 11035, 11037, 5037, 5571, 11040, 11048, 11049, 14175, 2630, 8005, 11044, 7293, 7659
Mammalia - Rodentia - Sciuridae
Douglassciurus jeffersoni (Douglass 1902)
Kihm 2013
PTRM 6203, 5025, 2607, 2628, 7932, 11034, 1943, 11036
Mammalia - Rodentia - Ischyromyidae
Metaparamys cf. dawsonae Korth and Emry 2007
Kihm 2013
PTRM 11041, 7920, 8349, 7440
Ischyromys junctus Russell 1972
Kihm 2013
PTRM 14972, 7945, 8001, 8325, 4738, 7387, 7713, 2625, 2008, 10928, 5104, 8008, 11045, 11042, 11043, 8321, 11050, 11053.
Ischyromys cf. veterior Matthew 1903
Kihm 2013
PTRM 11038, 4905, 7428
Mammalia - Rodentia - Eutypomyidae
Eutypomys parvus Lambe 1908
Kihm 2011
PTRM 8338, 1398, 4866, 6100, 7924, 10967, 10417, 10973, 4900, 10997, 1364, 1955, 7290, 7715, 8323, 10966, 10971, 10980, 10986, 10989, 10991, 10992, 10993, 1327, 2098, 7292, 8006, 10985, 10969, 10987, 6275, 7935, 10968, 10979, 10990, 7425, 7949, 10982, 10983, 10994, 16012, 11013, 5028, 10965, 6150, 10972, 10975, 10996, 1488, 2629, 5022, 5029, 5105, 6158, 6206, 7291, 7943, 10970, 10976, 10978, 10981, 10988, 11019, 2012, 6126, 7397, 7712, 8319, 10995, 11004, 1397, 5095, 10977, 5027, 5032.
Mammalia - Rodentia - Heliscomyidae
Heliscomys cf. vetus Cope 1873
Kihm 2013
PTRM 4898, 11063, 5452, 5459, 5540, 7727, 10290, 10296, 11061, 14157, 14159, 14161, 14168, 14693, 14697, 14699, 4881, 4961, 5588, 5595, 10208, 10294, 10298, 11054, 11055, 11058, 11064, 11066, 14155, 14166, 14167, 14171, 14692, 14696, 14698, 14700, 4880, 5065, 5094, 5457, 5818, 5848, 6157, 10292, 10297, 10444, 11067, 14150, 14153, 14154, 14158, 14160, 14164, 14170, 14173, 14701, 14702, 4971, 5013, 5490, 5744, 5875, 6276, 7426, 8013, 8014, 10293, 10295, 11056, 11057, 11059, 11060, 11062, 14151, 14152, 14156, 14162, 14163, 14165, 14169, 14172, 14694, 14695, 14703, 14704
Mammalia - Rodentia - Eomyidae
Centimanomys sp. Galbreath 1955
Paradjidaumo cf. trilophus (Cope 1873)
recombined as Adjidaumo trilophus
Paradjidaumo cf. hansonorum (Russell 1972)
Yoderimys cf. stewarti (Russell 1972)
"stewardii"
Mammalia - Rodentia - Pipestoneomyidae
Pipestoneomys sp. Donohoe 1956
Kihm 2011
PTRM 10974, 6167
Mammalia - Rodentia - Sciuravidae
Prolapsus sp. Wood 1973
Kihm 2013
PTRM 7298
Mammalia - Rodentia - Cylindrodontidae
Pseudocylindrodon silvaticus
Kihm 2011
PTRM 8288, 14960, 14705, 10934, 7388, 7393, 10945, 10946, 5000, 7390, 5010, 8009, 11024, 4999, 7927, 8333, 11026, 14970, 5537, 6123, 7297, 7395, 10947, 7944, 10413, 7427, 7716, 7925, 7931, 5525, 8337, 5096, 5871, 11022
Cylindrodon cf. collinus Russell 1972
    = Cylindrodon collinus Russell 1972
Kihm 2011
Ardynomys saskatchewensis
Kihm 2011
PTRM 7478, 7926 11023, 11052, 8332, 11001, 14968, 10932, 7295, 7717, 7726, 8322, 11007, 11021, 7272, 11020
Mammalia - Lagomorpha - Leporidae
Megalagus cf. brachyodon (Matthew 1903)
Palaeolagus cf. temnodon Douglass 1902
"timnodon"
Mammalia - Primates - Paromomyidae
cf. Ignacius sp. Matthew and Granger 1921
Kihm and Tornow 2014
PTRM 17483
Mammalia - Primates - Microsyopidae
Uintasoricinae indet. Szalay 1969
Kihm and Tornow 2014
PTRM 10401
Mammalia
Didelphidectes sp. Hough 1961
    = Peradectes sp. Matthew and Granger 1921
Kihm et al. 2001
Herpetotherium valens (Lambe 1908)
Herpetotherium cf. fugax (Cope 1873)
Kihm et al. 2001
Mammalia - Multituberculata - Neoplagiaulacidae
? Neoplagiaulacidae indet. Ameghino 1890
Schumaker and Kihm 2006
PTRM 7812
Ectypodus lovei (Sloan 1966)
see common names

Geography
Country:United States State/province:North Dakota County:Bowman
Coordinates: 46.1° North, 103.3° West (view map)
Paleocoordinates:47.4° North, 94.2° West
Basis of coordinate:based on political unit
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Eocene
Stage:Priabonian 10 m.y. bin:Cenozoic 3
*Period:Tertiary
Key time interval:Chadronian
Age range of interval:37.20000 - 33.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Chadron Member:Chalky Buttes
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:"cross stratification",planar lamination,fine,medium,brown poorly lithified sandstone
Lithology description: "brownish, poorly sorted, poorly consolidated, generally medium- to fine-grained sandstone... 2.5 m local section... two trough cross-bedded units (units 2 and 6); unit 5 [and] 2 [are] indistinguishable... Along the bedding planes are strewn gray mudballs... Unit 3 is a fine-grained, parallel-bedded sandstone. Unit 4 displays planar cross-bedding." (Smith 2006)
Environment:"channel"
Geology comments: "characteristic of the distal reaches of some modern braided rivers... braidbelt environment" (Smith 2006)
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:bulk,sieve,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: "All fossils were collected... by dry-screening quarried sediment" (Smith 2006)
Taxonomic list comments:from six different sites
originally reported by Leonard 1922
Metadata
Also known as:PTRM V89002
Database number:16991
Authorizer:J. Alroy, C. Boyd, J. Mueller, P. Barrett Enterer:J. Alroy, T. Cleary, T. Liebrecht, C. Boyd
Modifier:T. Cleary Research group:vertebrate
Created:1997-04-12 00:00:00 Last modified:2016-09-05 10:14:24
Access level:the public Released:1997-04-12 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

2743. D. A. Pearson and J. W. Hoganson. 1995. Proceedings of the North Dakota Academy of Sciences 49 [J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
54444 A. J. Kihm. 2011. Rodents from the Chadronian (Latest Eocene) Medicine Pole Hills Local Fauna, North Dakota. Part 1. Eutypomyidae, Cylindrodontidae, and Pipestoneomys. Paludicola 8(2):75-90 [C. Boyd/C. Boyd]
54821 A. J. Kihm. 2013. Rodents from the Chadronian (latest Eocene) Medicine Pole Hills local fauna, North Dakota. Part 2. Ischyromidae, Sciuravidae, Aplodontidae, Sciuridae and Heliscomyidae. 9(2):41-55 [C. Boyd/C. Boyd]
4189 A. J. Kihm, K. K. Schumaker, C. Warner-Evans and D. A. Pearson. 2001. Marsupials from the Medicine Pole Hills Local Fauna (latest Eocene) of North Dakota. Journal of Vertebrate Paleontology 21(3):67A-68A [J. Alroy/R. Whatley/R. Whatley]
54445 A. J. Kihm and K. K. Schumaker. 2004. The Chadronian Medicine Pole Hills Local Fauna, North Dakota. In J. H. Hartman (ed.), Guide to the vertebrate paleontology of the High Plains - The late Mesozoic-Cenozoic record of North Dakota: University of North Dakota Department of Geology and Geological Engineering Contribution 54 77-84 [C. Boyd/C. Boyd/C. Boyd]
54442 A. J. Kihm and K. K. Schumaker. 2008. Domnina (Mammalia, Soricomorpha) from the latest Eocene (Chadronian) Medicine Pole Hills Local Fauna of North Dakota. Paludicola 7(1):26-36 [C. Boyd/C. Boyd]
54819 A. J. Kihm and M. A. Tornow. 2014. First occurrence of plesiadapiform primates from the Chadronian (latest Eocene). Paludicola 9(4):176-182 [C. Boyd/C. Boyd]
54443 K. K. Schumaker and A. J. Kihm. 2006. Multituberculates from the Medicine Pole Hills Local Fauna (Chadronian) of Bowman, County, North Dakota. Paludicola 6(1):9-21 [C. Boyd/C. Boyd]
19366 K. T. Smith. 2006. A diverse new assemblage of late Eocene squamates (Reptilia) from the Chadron Formation of North Dakota, U.S.A. Palaeontologia Electronica 9(2):1-44 [J. Alroy/J. Alroy]
54446 K. T. Smith. 2011. The Evolution of Mid-latitude Faunas during the Eocene: Late Eocene Lizards of the Medicine Pole Hills Reconsidered. Bulletin of the Peabody Museum of Natural History 52(1):3-105 [C. Boyd/C. Boyd]
49993 K. T. Smith. 2013. New constraints on the evolution of the snake clades Ungaliophiinae, Loxocemidae and Colubridae (Serpentes), with comments on the fossil history of erycine boids in North America. Zoologischer Anzeiger 252(2):157-182 [J. Mueller/T. Liebrecht]