Hyopsodus Hill (Eocene of the United States)

Also known as UCMP V5626; Tabernacle Butte Locality 5

Where: Sublette County, Wyoming (42.4° N, 109.3° W: paleocoordinates 46.3° N, 95.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Br3 mammal zone, Bridger Formation, Bridgerian (50.3 - 46.2 Ma)

• Late Bridgerian NALMA (Br3), 46.92 ± 0.17 Ma

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collected by A. Wood; reposited in the AMNH

Collection methods: surface (float), surface (in situ),

Primary reference: P. O. McGrew, J. E. Berman, M. K. Hecht, J. M. Hummel, G. G. Simpson and A. E. Wood. 1959. The geology and paleontology of the Elk Mountain and Tabernacle Butte area, Wyoming. Bulletin of the American Museum of Natural History 117(3):117-176 [J. Alroy/J. Alroy/R. Whatley]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 16244: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Robin Whatley, Patricia Holroyd, Roger Benson, Terri Cleary and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Amphibia
 Salientia - Megophryidae
"Megophryinae indet." = Megophryidae5
"Megophryinae indet." = Megophryidae5 Nobel 1931 frog
AMNH 3832, incomplete sacrum
 Salientia -
Diplasiocoela indet.5 Nichols 1916 frog
AMNH 3833, incompletely preserved sacrum
 Salientia - Rhinophrynidae
Eorhinophrynus septentrionalis n. sp.5 Hecht 1959 burrowing toad
AMNH 3818 (holotype), single complete atlas
Reptilia
 Loricata -
Crocodylia indet.5 crocodilian
"Crocodilia", scattered fragmentary remains; no specimen no.s given
 Squamata -
Boavus sp.5 Marsh 1871 snake
AMNH 3809, "abundant remains"
 Squamata - Boidae
Calamagras primus n. sp.5 Hecht 1959 dwarf boa
Misspelled "Calamagrus" in text: AMNH 3828 (holotype), nearly complete anterior mid-thoracic vertebra; additional referred vertebrae also found at this locality
Paraepicrates brevispondylus n. sp.5 Hecht 1959 sand boa
AMNH 3829, complete mid-thoracic vertebra
 Squamata - Tropidophiidae
Dunnophis microechinis n. sp.5 Hecht 1959 dwarf boa
AMNH 3830 (holotype), complete mid-thoracic vertebra; referred specimens include unspecified vertebrae
 Squamata - Aniliidae
Borealilysia sp.3, "Coniophis carinatus n. sp." = Borealilysia carinata5
Borealilysia sp.3 Head 2020 pipe snake
AMNH 3827 (holotype), incomplete mid-thoracic vertebra
"Coniophis carinatus n. sp." = Borealilysia carinata5 Hecht 1959 pipe snake
AMNH 3826 (holotype), incomplete mid-thoracic vertebra; several referred specimens including [no cat. no.], a tiny vertebra less that 2.2mm long
 Squamata - Xantusiidae
Palaeoxantusia fera n. gen. n. sp.4
Palaeoxantusia fera n. gen. n. sp.4 Hecht 1956 night lizard
referred specimen AMNH 3821, splenio-dentary; type is also said by Hecht (1959) to be from locality 5, but is in "S.W. 1/4 sect. 34, T. 29 N., R. 105 W." according to Hecht (1956), which is the section north of the one including Hyopsodus Hill and including locality 6
 Squamata - Rhineuridae
Rhineura sp.5 Cope 1861 worm lizard
AMNH 3811
Lestophis sp.5 Marsh 1885 worm lizard
AMNH 3824, incomplete vertebra; AMNH 3825, vertebra
 Squamata - Teiidae
Teiidae indet.5 Gray 1827 squamates
AMNH 3812, badly broken dentaries
 Squamata -
Entomophontes hutchisoni10, "Saniwa sp." = Saniwa5, "Thinosaurus stenodon" = Saniwa5, Peltosaurus sp.5
Entomophontes hutchisoni10 Smith and Gauthier 2013 squamates
AMNH 3820, single fragment of left maxilla
"Saniwa sp." = Saniwa5 Leidy 1870 squamates
AMNH 3813, vertebrae from the anterior and posterior thoracic region and the caudal region; AMNH 3814, almost complete dentary; multiple other specimens not described
"Thinosaurus stenodon" = Saniwa5 squamates
Either AMNH 3822 or 3823 (text unclear), fragment bearing acrodont teeth
Peltosaurus sp.5 Cope 1873 squamates
"several incomplete dentaries"
 Squamata - Anguidae
Xestops sp.5, cf. Xestops sp.2, "Dimetopisaurus wyomingensis n. sp." = Xestops vagans5
Xestops sp.5 Cope 1873 squamates
AMNH 3834, two osteoscutes
cf. Xestops sp.2 Cope 1873 squamates
"Dimetopisaurus wyomingensis n. sp." = Xestops vagans5 Marsh 1872 squamates
AMNH 3819 (holotype), single frontal
Mammalia
 Cimolesta - Apatemyidae
Apatemys sp.12 Marsh 1872 eutherian
 Chiroptera -
Chiroptera indet.9 Blumenbach 1779 bat
 Condylarthra - Hyopsodontidae
Hyopsodus lepidus Matthew 1909 condylarth
 Creodonta - Hyaenodontidae
Sinopa major11 Wortman 1902 creodont
 Perissodactyla - Equidae
Orohippus sp. Marsh 1872 horse
two forms
 Perissodactyla - Brontotheriidae
"Manteoceras manteoceras" = Telmatherium validus
"Manteoceras manteoceras" = Telmatherium validus Marsh 1872 brontothere
 Perissodactyla - Hyrachyidae
Hyrachyus cf. eximius Leidy 1871 odd-toed ungulate
 Theriamorpha - Phenacodontidae
Phenacodus sp.12 Cope 1873 condylarth
 Artiodactyla - Diacodexeidae
Neodiacodexis emryi12 West and Atkins 1970 even-toed ungulate
 Theriamorpha - Geolabididae
"Didelphodus altidens" = Centetodon altidens9, Centetodon bembicophagus8, Centetodon pulcher9, "Diacodon bacchanalis n. sp." = Centetodon bacchanalis
"Didelphodus altidens" = Centetodon altidens9 Marsh 1872 placental
Centetodon bembicophagus8 Lillegraven et al. 1981 placental
Centetodon pulcher9 Marsh 1872 placental
"Diacodon bacchanalis n. sp." = Centetodon bacchanalis McGrew et al. 1959 placental
 Theriamorpha - Nyctitheriidae
"Scenopagus priscus" = Nyctitherium priscum7, "Talpavus cf. nitidus" = Nyctitherium nitidum9, Nyctitherium velox
"Scenopagus priscus" = Nyctitherium priscum7 Marsh 1872 placental
a new specimen (AMNH 56060) not described earlier
"Talpavus cf. nitidus" = Nyctitherium nitidum9 Marsh 1872 placental
supported by Krishtalka 1976a, contra Russell et al. 1975
Nyctitherium velox Marsh 1872 placental
described by Krishtalka 1976b
 Theriamorpha - Apternodontidae
Apternodontidae indet.9 Matthew 1910 placental
 Rodentia - Paramyidae
Paramyidae "indet. A"6 Miller and Gidley 1918 rodent
Paramyidae "indet. B"1 Miller and Gidley 1918 rodent
 Rodentia - Sciuravidae
Sciuravus nitidus Marsh 1871 rodent
Taxymys lucaris Marsh 1872 rodent
 Rodentia - Reithroparamyidae
 Rodentia - Ischyromyidae
"Microparamys wyomingensis n. sp." = Paramys wyomingensis, Paramys delicatior
"Microparamys wyomingensis n. sp." = Paramys wyomingensis Wood 1959 rodent
Paramys delicatior Leidy 1871 rodent
 Primates - Omomyidae
Washakius insignis Leidy 1873 tarsier
 Primates - Microsyopidae
Microsyops cf. annectens12 Marsh 1872 primate
Uintasorex parvulus Matthew 1909 primate
 Theriamorpha - Herpetotheriidae
"Herpetotheriinae indet." = Herpetotheriidae1, "Peratherium knighti n. sp." = Herpetotherium knighti
"Herpetotheriinae indet." = Herpetotheriidae1 Trouessart 1879 marsupial
"Peratherium knighti n. sp." = Herpetotherium knighti McGrew et al. 1959 marsupial
Gastropoda
 Stylommatophora - Urocoptidae
? Holospira sp.9 Martens 1860 slug
 Stylommatophora - Bulimulidae
Oreoconus sp.9 McKenna et al. 1962 slug
may be O. planispira
 Heterostropha - Planorbidae