White River Fauna

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †B. veredus (type)
• †B. celeripes
• †B. cursor
• †B. fricki
• †B. geographicus
• †B. grallator
• †B. fax?
• †B. minor

|†Bathornithidae

|Eocene-Miocene

|File:Bathornis_grallator_restoration.jpg

|The type genus of the Bathornithidae, large predatory birds related to seriemas.{{cite journal|last1=Wetmore|first1=A.|year=1927|title=Fossil Birds from the Oligocene of Colorado|url=http://www.dmns.org/media/370630/pseries1,v7,n2.pdf|journal=Proceedings of the Colorado Museum of Natural History|volume=7|issue=2|pages=1–14}}

|

|†Bathornithidae

|

|

|Closely related and similar to the conspecific Bathornis; however, it seems to have occupied more arid environments.{{cite journal|last1=Wetmore|first1=A.|year=1927|title=Fossil Birds from the Oligocene of Colorado|url=http://www.dmns.org/media/370630/pseries1,v7,n2.pdf|journal=Proceedings of the Colorado Museum of Natural History|volume=7|issue=2|pages=1–14}}

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †B. sp.

|†Anthracotheriidae

|

|File:Head of Bothriodon.png

|

|

• †E. brachyrhynchus

|†Anthracotheriidae

|

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †P. wilsoni (type)
• †P. chadronensis
• †P. eximium
• †P. franki
• †P. labratum

|Camelidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †A. mortoni (type)

|†Entelodontidae

|Oligocene

|File:Archaeotherium.jpg

|

|

• †D. shoshonensis (type)
• †D. humerosum?

|†Entelodontidae

|Miocene

|File:Daeodon_shoshonensis_2.png

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|†Leptomerycidae

|

|File:Leptomeryx BW.jpg

|The most common fossil found in the area.{{Cite journal|last=Emry|first=Robert J.|date=1973|title=Stratigraphy and Preliminary Biostratigraphy of the Flagstaff Rim Area, Natrona County, Wyoming|url=http://dx.doi.org/10.5479/si.00810266.18.1|journal=Smithsonian Contributions to Paleobiology|issue=18|pages=1–43|doi=10.5479/si.00810266.18.1|issn=0081-0266}}

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †E. major (type)
• †E. occidentalis
• †E. pygmyus

|†Merycoidodontidae

|Oligocene

|File:Eporeodon_major.JPG

|

|

|†Merycoidodontidae

|

|File:Leptauchenia by Apokryltaros cropped.png

|

|

|†Merycoidodontidae

|

|File:Merycoidodon BW.jpg

|

|

|†Merycoidodontidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|†Protoceratidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|†Hypertragulidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †H. horridus

|†Hyaenodontidae

| Eocene - Miocene

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †D. vetus (type)
• †D. hartshorianus
• †D. lambei
• †D. ruber
• †D. socialis
• †D. transversus

|†Amphicyonidae

|Eocene-Miocene

|File:Reconstruction of Daphoenus felinus (fossil mammal) (Middle Oligocene; Hat Creek Basin, Sioux County, Nebraska, USA) (32312339241).jpg

|

|

|†Amphicynodontinae

|

|

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †A. leptodus (type)
• †A. pavidus
• †A. falkenbachi

|†Borophaginae

|Oligocene

|File:Archaeocyon_head_restoration.jpg

|

|

| Canidae

|

|

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †D. felina (type)

|†Nimravidae

|Eocene-Miocene

|File:Dinictis_Knight.jpg

|

|

• H. primaevus (type)
• H. occidentalis
• H. strigidens
• H. cerebralis
• H. dakotensis
• H. oharrai
• H. sicarius

|†Nimravidae

|Eocene-Oligocene

|File:Hoplophoneus primaevus by R. B. Horsfall (coloured).jpg

|

|

|†Nimravidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †X. pileorivale (type)

|†Epoicotheriidae

|Oligocene

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|Leporidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|†Brontotheriidae

| Eocene - Oligocene

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|Equidae

|

|frameless

|

|

|Equidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|†Amynodontidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|†Hyracodontidae

| Eocene - Oligocene

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|Rhinocerotidae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

|Tapiridae

|

|frameless

|

!Genus

!Species

!Clade

!Epoch

!Image

!Notes

|

• †A. praeteredens (type)
• †A. coloradensis
• †A. galushai
• †A. readingi

|Castoridae

|Eocene-Miocene

|File:Agnotocastor.jpg

|

|

|†Ischyromyidae

|

|frameless

|

!Genus

!Species

!NALMA

!Age

!Notes

!Image

|†A. prenasalis

|Chadronian

|late Eocene

|The earliest known species of alligator.

|File:Alligator_prenasalis_(specimen_AMNH_4994)_-20120521-RM-224539.jpg

!Genus

!Species

!NALMA

!Epoch

!Notes

!Image

|†A. formosum

|Orellan

|early Oligocene

|An iguanian related to crotaphytids (collared lizards).{{Citation |last1=Sullivan |first1=Robert M. |title=Squamata |date=1996-06-13 |work=The Terrestrial Eocene-Oligocene Transition in North America |pages=354–372 |editor-last=Prothero |editor-first=Donald R. |url=https://www.researchgate.net/publication/289505193 |access-date=2024-11-02 |edition=1 |publisher=Cambridge University Press |doi=10.1017/cbo9780511665431.018 |isbn=978-0-521-43387-7 |last2=Holman |first2=J. Alan |editor2-last=Emry |editor2-first=Robert J.}}{{Cite journal |last=Scarpetta |first=Simon G. |date=2024 |title=A Palaeogene stem crotaphytid ( Aciprion formosum ) and the phylogenetic affinities of early fossil pleurodontan iguanians |journal=Royal Society Open Science |language=en |volume=11 |issue=1 |doi=10.1098/rsos.221139 |issn=2054-5703 |pmc=10776235 |pmid=38204790|bibcode=2024RSOS...1121139S }}

|

|†C. carinicollis

| rowspan="2" |Chadronian

| rowspan="2" |late Eocene

| rowspan="2" |A rare and enigmatic squamate based on vertebrae.

|

|

|†C. sp.

|Chadronian

|late Eocene

|A rare iguanid based on jaw fragments.

|

|†E. serratus

|Orellan

|early Oligocene

|A rare xenosaurid known from skull fragments.{{Cite journal |last=Bhullar |first=Bhart-Anjan S. |date=2010-07-26 |title=Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus |url=https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2009.00573.x |journal=Zoological Journal of the Linnean Society |language=en |volume=159 |issue=4 |pages=921–953 |doi=10.1111/j.1096-3642.2009.00573.x}}

|

|†H. tuberculatus

|Chadronian to Orellan

|late Eocene to early Oligocene

|A glyptosaurine anguid (an armored lizard related to glass lizards and alligator lizards). Previously considered a species of Glyptosaurus.{{Cite journal |last1=Maddox |first1=Dennis |last2=Wall |first2=William P. |date=1998 |title=A Systematic Review of the Fossil Lizards and Snakes (Squamata) from the White River Group of Badlands National Park |url=http://www.npshistory.com/publications/paleontology/grdtr-98-01.pdf#page=11 |journal=National Park Service Paleontological Research Technical Report NPS/NRGRD/GRDTR-98/01 |pages=4–7}}

|File:Helodermoides tuberculatus AMNH 11311.jpg

|†H. antiqua

|Orellan to Whitneyan

|early-mid Oligocene

| rowspan="2" |An amphisbaenian (worm lizard).

|

|Chadronian

|late Eocene

|

|†L. matthewi

|Orellan to Arikareean

|Oligocene

|A rare helodermatid (beaded lizard).

|

|†P. cf. P. borealis

|Chadronian

|late Eocene

|A xantusiid (night lizard).

|

|†P. greeni

|Orellan

|early Oligocene

|A rare iguanian known from a single jaw.

|

|†P. pawneensis

|Orellan

|early Oligocene

|An anguid related to Ophisaurus (eastern glass lizards).

|

|†P. granulosus

|Chadronian to Arikareean

|late Eocene to late Oligocene

|A common glyptosaurine anguid (an armored lizard related to glass lizards and alligator lizards).

|File:Peltosaurus.JPG

|†P. charisticus

|Chadronian

|late Eocene

|A rare polychrotine (bush anole) based on jaw fragments.

|

|†R. coloradoensis

|Chadronian

|late Eocene

| rowspan="2" |A rhineurid amphisbaenian closely related to the Florida worm lizard (Rhineura floridana).

|

|Orellan to Whitneyan

|early-mid Oligocene

|

|†S. edura

|Chadronian

|late Eocene

|A rare varanid based on jaw fragments.

|

|†S. natronicus

|Chadronian

|late Eocene

|A rare rhineurid based on a single skull.

|

|†T. sp.

|Chadronian

|late Eocene

|A rare acrodontan based on jaw fragments.

|

|†T. pearsoni

|Chadronian

|late Eocene

|A rare phrynosomatine (relative of fence lizards) based on jaw fragments.

|

!Genus

!Species

!NALMA

!Epoch

!Notes

!Image

|†B. cf. occidentalis

|Chadronian to Orellan

|late Eocene to early Oligocene

|A boine boid (true boa).

|

|†C. angulatus

|Orellan to Arikareean

|Oligocene

| rowspan="2" |An erycine boid (sand boa).

|

|Orellan

|early Oligocene

|

|†C. dakotaensis

|Orellan

|early Oligocene

|A rare booid based on eroded fossils found within a mammal coprolite.

|

|†G. vetus

|Orellan

|early Oligocene

|An erycine boid (sand boa).

|

|†H. orellanensis

|Orellan

|early Oligocene

|An erycine boid (sand boa).

|

|†H. breithaupti

|Orellan

|early Oligocene

|A booid based on complete skeletons.

|

|†T. galbreathi

|Orellan

|early Oligocene

|A colubrid.

|

!Genus

!Species

!NALMA

!Epoch

!Notes

!Image

|†A. leucopotamica

|Chadronian to Orellan

|late Eocene to early Oligocene

|A trionychid (softshell turtle).

|

|†C. antiqua

|Chadronian to Whitneyan

|late Eocene to mid-Oligocene

|An emydid (pond turtle), sometimes known as "Trachemys" antiqua. A potential relative of modern painted turtles (Chrysemys).

|

|cf. †E. sp.

|Chadronian

|late Eocene

|A "batagurid" (geoemydid) similar to Echmatemys.

|

|†G. laticuneus

|Chadronian to Whitneyan

|late Eocene to mid-Oligocene

|A gopher tortoise in the subgenus Oligopherus. Gopherus fossils are also known from the Whitneyan.

|

|†H. brontops

|Chadronian

|late Eocene

|A testudinid (tortoise). Hesperotestudo-like fossils are also known from the Whitneyan.

|

|†P. inornata

|Chadronian

|late Eocene

|An emydid (pond turtle) closely related to Graptemys (map turtles).

|

|†S. amphithorax

|Chadronian

|late Eocene

| rowspan="2" |A common testudinid (tortoise) related to gopher tortoises (Gopherus). Probably survived into the Whitneyan in the White River area.

|frameless

|Chadronian to Orellan

|late Eocene to early Oligocene

|

|†X. formosa

|Chadronian

|late Eocene

|A kinosternid (mud turtle).

|

!Genus

!Species

!NALMA

!Epoch

!Notes

!Image

|†E. grandis

|Chadronian

|late Eocene

|A pelobatid frog related to Pelobates (the European spadefoot toads).{{Cite journal |last1=Roček |first1=Zbyněk |last2=Wuttke |first2=Michael |last3=Gardner |first3=James D. |last4=Bhullar |first4=Bhart-Anjan Singh |date=2014 |title=The Euro-American genus Eopelobates, and a re-definition of the family Pelobatidae (Amphibia, Anura) |url=http://link.springer.com/10.1007/s12549-014-0169-5 |journal=Palaeobiodiversity and Palaeoenvironments |language=en |volume=94 |issue=4 |pages=529–567 |doi=10.1007/s12549-014-0169-5 |bibcode=2014PdPe...94..529R |issn=1867-1594}}

|