List of the Cenozoic life of North Dakota
# List of the Cenozoic life of North Dakota

This list of the Cenozoic life of North Dakota contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of North Dakota and are between 66 million and 10,000 years of age.

## A

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* Acer
* †Acrovena – type locality for genus
   * †Acrovena laevis – type locality for species
* †Actinodonta
* †Adjidaumo
   * †Adjidaumo minimus
   * †Adjidaumo minutus
* †Aesculus
   * †Aesculus hickeyi – type locality for species
* †Agnotocastor
   * †Agnotocastor praetereadens
* †Aletodon
   * †Aletodon quadravus
* Fossilized skeleton of the Late Cretaceous-Oligocene Alligator relative Allognathosuchus †Allognathosuchus – type locality for genus
   * †Allognathosuchus mlynarskii – type locality for species
* †Altasciurus
   * †Altasciurus leonardi – type locality for species
* †Alveugena
   * †Alveugena carbonensis
* †Amersinia
   * †Amersinia FU082 informal
   * †Amersinia FU82 informal
* †Amesoneuron
   * †Amesoneuron FU037 informal
* Amia
   * †Amia fragosa
   * †Amia uintaensis
* †Ampelopsis
   * †Ampelopsis acerifolia
* †Amphicaenopus
   * †Amphicaenopus platycephalus
* †Ankylodon – or unidentified comparable form
* †Apternodus
* †Archaeocyon
   * †Archaeocyon leptodus
* Life restoration of the Eocene-Oligocene entelodont mammal Archaeotherium †Archaeotherium
   * †Archaeotherium mortoni
* †Arctocyon
* †Ardynomys
   * †Ardynomys saskatchewensis
* †Averrhoites
   * †Averrhoites affinis
* †Axestemys
   * †Axestemys montinsana
* Azolla
   * †Azolla montana
   * †Azolla stanleyi – type locality for species
* †Azollopsis
   * †Azollopsis tomentosa

## B

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* †Bathycyathus
   * †Bathycyathus lloydi – type locality for species
* †Batrachosauroides
   * †Batrachosauroides gotoi – type locality for species
* †Beringiaphyllum – report made of unidentified related form or using admittedly obsolete nomenclature
   * †Beringiaphyllum cupanioides
* †Bessoecetor
   * †Bessoecetor septentrionalis
* Betula
   * †Betula hesterna – type locality for species
* †Bisonalveus
   * †Bisonalveus holtzmani
* †Borealosuchus
   * †Borealosuchus formidabilis – type locality for species
* †Boremys
* †Bothriodon
* Restorative portrait of the Miocene oreodont mammal Brachycrus †Brachycrus
* †Browniea
   * †Browniea serrata

## C

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* †Cabomba
   * †Cabomba inermis
* †Calamagras
   * †Calamagras weigeli
* †Canariophyllum – type locality for genus
   * †Canariophyllum ampla – type locality for species
* Canticocculus
* †Cantius
   * †Cantius frugivorus
* †Carpites
   * †Carpites verrucosus
* †Carpodaptes
   * †Carpodaptes hazelae – or unidentified comparable form
   * †Carpodaptes hobackensis – or unidentified comparable form
* †Carpolithes
   * †Carpolithes arcticus
   * †Carpolithes bryangosus – type locality for species
   * †Carpolithes lunatus – type locality for species
* A living Carya, or hickory tree Carya
   * †Carya antiquorum
* †Cedromus
   * †Cedromus wardi
* Celtis
   * †Celtis aspera
* †Centetodon
   * †Centetodon chadronensis
   * †Centetodon magnus
   * †Centetodon marginalis
* †Centimanomys
* †Ceratophyllum
   * †Ceratophyllum FU080 informal
* Cercidiphyllum
   * †Cercidiphyllum arcticum
   * †Cercidiphyllum articum
   * †Cercidiphyllum ellipticum
   * †Cercidiphyllum genetrix
* †Chaetoptelea
   * †Chaetoptelea microphylla
* Life restoration of the Late Cretaceous-Eocene choristoderan reptile Champsosaurus †Champsosaurus
   * †Champsosaurus gigas – type locality for species
   * †Champsosaurus tenuis – type locality for species
* †Chrysotriton – type locality for genus
   * †Chrysotriton tiheni – type locality for species
* Cocculus
   * †Cocculus flabella
* †Coniophis
* †Conoryctella
   * †Conoryctella dragonensis – or unidentified comparable form
* †Cornophyllum
   * †Cornophyllum newberryi
* Cornus
   * †Cornus hyperborea
* †Corylus
   * †Corylus acutertiaria – type locality for species
   * †Corylus FU079 informal
   * †Corylus insignis
* Life restoration of the Paleocene-Eocene pantodont mammal Coryphodon. Heinrich Harder (1920). †Coryphodon
   * †Coryphodon armatus – or unidentified comparable form
* †Cotradechites – type locality for genus
   * †Cotradechites lithinus – type locality for species
* †Credneria
   * †Credneria daturaefolia – tentative report
* †Cupressinocladus
   * †Cupressinocladus interruptus
* Cyclocarya
   * †Cyclocarya brownii
* †Cylindrodon
   * †Cylindrodon collinus
* †Cyperacites
* †Cypressaurus

## D

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* †Dakotornis – type locality for genus
   * †Dakotornis cooperi – type locality for species
* Life restoration of the Eocene-Miocene bear dog Daphoenus †Daphoenus
* †Davidia
   * †Davidia antiqua
* †Dennstaedtia
   * †Dennstaedtia americana
* †Diacocherus
   * †Diacocherus minutus
* †Diacodexis – tentative report
* Restoration of the Oligocene-Miocene hornless rhinoceros Diceratherium. Robert Bruce Horsfall (1913). †Diceratherium
   * †Diceratherium tridactylum
* Dicotylophyllum
   * †Dicotylophyllum anomalum
   * †Dicotylophyllum hamameloides – type locality for species
   * †Dicotylophyllum hebronensis – type locality for species
   * †Dicotylophyllum mercerensis – type locality for species
   * †Dicotylophyllum oblongatum – type locality for species
* †Didelphodus – or unidentified comparable form
* †Didymictis
* Life restoration of the Eocene-Miocene false saber-toothed cat Dinictis. Robert Bruce Horsfall (1913). †Dinictis
* †Dissacus
* †Dombeya
   * †Dombeya novimundi – type locality for species
* †Domnina
   * †Domnina sagittariensis – type locality for species
   * †Domnina thompsoni – or unidentified comparable form
* †Dorraletes
   * †Dorraletes diminutivus
* †Douglassciurus
   * †Douglassciurus jeffersoni
* †Drepanochilus – tentative report

## E

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* Fossilized shell of the Eocene turtle Echmatemys †Echmatemys
   * †Echmatemys testudinea
* †Ectocion
   * †Ectocion collinus
* †Ectypodus
   * †Ectypodus hazeni
   * †Ectypodus lovei
* †Elliptio
   * †Elliptio priscus
* †Elomeryx
   * †Elomeryx armatus
* †Entomolestes
* †Equisetum
   * †Equisetum FU036 informal
   * †Equisetum magnum – type locality for species
* †Eucommia
   * †Eucommia serrata
* †Eumys
   * †Eumys brachyodus
   * †Eumys elegans
   * †Eumys lammersi – type locality for species
* †Eutypomys
   * †Eutypomys hibernodus – type locality for species
   * †Eutypomys parvus

## F

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* A living Ficus, or fig tree Ficus
   * †Ficus subtruncata
* †Fokieniopsis
   * †Fokieniopsis catenulata
* †Fraxinus
   * †Fraxinus eocenica

## G

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* Ginkgo
   * Restored foliage of the Late Cretaceous-Miocene ginkgo tree Ginkgo adiantoides †Ginkgo adiantoides
* Glyptostrobus
   * †Glyptostrobus europaeus
   * †Glyptostrobus nordenskioldi
* †Gomphaeschna
   * †Gomphaeschna schrankii – type locality for species

## H

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* †Harmsia
   * †Harmsia hydrocotyloidea
* †Heliscomys
   * †Heliscomys borealis – type locality for species
   * †Heliscomys medius – or unidentified comparable form
   * †Heliscomys senex
   * †Heliscomys vetus – or unidentified comparable form
* †Helodermoides
* Hemitelia
   * †Hemitelia magna
* †Herpetotherium
   * †Herpetotherium fugax – or unidentified comparable form
   * †Herpetotherium valens
* Life restoration of the Eocene-Oligocene dog Hesperocyon. Robert Bruce Horsfall (1913). †Hesperocyon
   * †Hesperocyon gregarius
* †Hesperopetes
   * †Hesperopetes blacki – or unidentified comparable form
* †Homogalax
   * †Homogalax aureus – type locality for species
* †Hydromystria
   * †Hydromystria expansa
* †Hyopsodus
   * †Hyopsodus loomisi
* †Hypertragulus
* †Hyracodon

## I

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* †Ignacius
   * †Ignacius frugivorus
* Mounted fossilized skeleton of the Eocene-Oligocene rodent Ischyromys †Ischyromys
   * †Ischyromys junctus
   * †Ischyromys typus
   * †Ischyromys veterior – or unidentified comparable form
* †Isoetites
   * †Isoetites horridus

## J

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* †Joffrichthys
   * †Joffrichthys triangulpterus – type locality for species
* Juglans
   * †Juglans taurina

## K

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* Flowers of a living Kalmia shrub †Kalmia – report made of unidentified related form or using admittedly obsolete nomenclature
   * †Kalmia elliptica
* †Kirkomys

## L

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* †Labidolemur
   * †Labidolemur soricoides
* †Lemnaceae
   * †Lemnaceae scutatum
* Illustration of a living Lepisosteus, or gar Lepisosteus
   * †Lepisosteus occidentalis
* †Leptacodon
   * †Leptacodon tener
* †Leptauchenia
   * †Leptauchenia decora
* †Leptictis
   * †Leptictis acutidens – or unidentified comparable form
   * †Leptictis dakotensis
* †Leptodontomys
   * †Leptodontomys douglassi
* Life restoration of the Eocene-Oligocene even-toed ungulate Leptomeryx †Leptomeryx
   * †Leptomeryx evansi
   * †Leptomeryx yoderi – or unidentified comparable form
* †Litocherus
   * †Litocherus zygeus
* †Lophiparamys
   * †Lophiparamys murinus – or unidentified comparable form
* Lygodium
   * †Lygodium kaulfussi

## M

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* Marchantia
   * †Marchantia pealei
   * †Marchantia pealii
* †Megalagus
   * †Megalagus brachyodon – or unidentified comparable form
* Mounted fossilized skeleton of the Miocene-Pleistocene ground sloth Megalonyx †Megalonyx
   * †Megalonyx jeffersonii
* †Meliosma
   * †Meliosma longifolia
* †Meliosoma
   * †Meliosoma rostellata
* †Menispermites
   * †Menispermites parvareolatus – type locality for species
* †Merychyus
* †Merycochoerus
* †Merycoidodon
   * †Merycoidodon bullatus
   * †Merycoidodon culbertsoni
   * †Merycoidodon major
* †Mesodma
   * †Mesodma pygmaea
* †Mesohippus
   * †Mesohippus bairdi
   * †Mesohippus propinquus – or unidentified comparable form
   * †Mesohippus westoni – or unidentified comparable form
* Restoration of the Eocene-Miocene swamp rhinoceros Metamynodon. Charles R. Knight (1896). †Metamynodon
* †Metaparamys
   * †Metaparamys dawsonae – or unidentified comparable form
* Metasequoia
   * †Metasequoia occidentalis
* †Miacis
* †Microcosmodon
* †Microparamys – or unidentified comparable form
* †Micropternodus
   * †Micropternodus borealis – or unidentified comparable form
* †Microsyops
   * †Microsyops angustidens
* †Mimetodon
   * †Mimetodon silberlingi
* †Miniochoerus
   * †Miniochoerus starkensis – type locality for species
* †Miohippus
   * †Miohippus obliquidens
* †Musophyllum
   * †Musophyllum complicatum

## N

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* †Nannodectes
* †Nanotragulus
* †Nelumbago
   * †Nelumbago montanum
* †Nelumbium
* A living Nelumbo lotus †Nelumbo
   * †Nelumbo aureavallis – type locality for species
   * †Nelumbo FU062 informal
   * †Nelumbo FU085 informal
   * †Nelumbo FU62 informal
* †Neoplagiaulax
   * †Neoplagiaulax hunteri
   * †Neoplagiaulax mckennai
   * †Neoplagiaulax nanophus
* †Nephrops
   * †Nephrops buntingi – type locality for species
* †Nordenskioldia
   * †Nordenskioldia borealis
* †Notomorpha
   * †Notomorpha garmanii
* Anatomy of a de-shelled Nototeredo shipworm †Nototeredo
   * †Nototeredo globosa
* †Nyssa
   * †Nyssa alata
* †Nyssidium
   * †Nyssidium arcticum
   * †Nyssidium articum

## O

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* †Ogmophis
   * †Ogmophis compactus
* †Oligoryctes
   * †Oligoryctes altitalonidus
   * †Oligoryctes cameronensis – or unidentified comparable form
* †Oligoscalops
   * †Oligoscalops galbreathi
* †Oligotheriomys
   * †Oligotheriomys magnus
   * †Oligotheriomys primus – type locality for species
* †Onoclea
   * †Onoclea hesperia
* Fossil of the Permian-modern crustacean burrow ichnogenus Ophiomorpha †Ophiomorpha
   * †Ophiomorpha nodosa
* †Oreithyia
   * †Oreithyia oaklandi
* †Osbornodon
   * †Osbornodon renjiei – type locality for species
* †Osmunda
   * †Osmunda macrophylla
* †Oxyacodon
   * †Oxyacodon priscilla

## P

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* †Palaeanodon – tentative report
* †Palaeocarpinus
* Restoration of the Oligocene rabbit relative Palaeolagus †Palaeolagus
   * †Palaeolagus haydeni
   * †Palaeolagus temnodon – or unidentified comparable form
* †Palaeophytocrene
* †Palaeopsammia
   * †Palaeopsammia zitteli – type locality for species
* †Palaeoryctes
   * †Palaeoryctes punctatus – or unidentified comparable form
* †Palaeosinopa
* †Palaeoxantusia – report made of unidentified related form or using admittedly obsolete nomenclature
   * †Palaeoxantusia borealis
* †Paleotomus
   * †Paleotomus senior – or unidentified comparable form
* †Palmacites
* †Paradjidaumo
   * †Paradjidaumo hansonorum – or unidentified comparable form
   * †Paradjidaumo trilophus
* †Paramys
   * †Paramys excavatus – or unidentified comparable form
* †Paranymphaea
   * †Paranymphaea crassifolia
* †Pararyctes
   * †Pararyctes pattersoni
* †Parataxodium – or unidentified comparable form
* †Paraternstroemia – type locality for genus
   * †Paraternstroemia hyphovenosa – type locality for species
* †Parectypodus
   * †Parectypodus lunatus
* †Peltosaurus – or unidentified comparable form
* †Penosphyllum
   * †Penosphyllum cordatum
* †Peradectes
   * †Peradectes elegans
* †Persites – type locality for genus
   * †Persites argutus – type locality for species
* Life restoration of the Paleocene-Eocene ungulate Phenacodus. Charles R. Knight (1898). †Phenacodus
   * †Phenacodus grangeri
   * †Phenacodus magnus
* †Phyllites
   * †Phyllites demoresi
   * †Phyllites disturbans
* †Piceoerpeton
   * †Piceoerpeton willwoodense
* Pinus
   * †Pinus peregrinus – type locality for species
* †Pipestoneomys
* †Planatus
   * †Planatus raynoldsi
* †Plastomenus
* Platanus
   * †Platanus nobilis
   * †Platanus raynoldsi
   * †Platanus raynoldsii
* Platycarya
   * †Platycarya americana
* Life restoration of the Paleocene-Eocene primate Plesiadapis †Plesiadapis
   * †Plesiadapis anceps
   * †Plesiadapis churchilli – or unidentified comparable form
   * †Plesiadapis fodinatus – or unidentified comparable form
   * †Plesiadapis rex
* †Poebrotherium
   * †Poebrotherium wilsoni
* Populus
   * †Populus nebrascensis
* †Prochetodon
   * †Prochetodon foxi
* †Prodiacodon
   * †Prodiacodon tauricinerei – or unidentified comparable form
* †Prolapsus
* †Propalaeosinopa
   * †Propalaeosinopa albertensis
* †Prosciurus
   * †Prosciurus albiclivus – type locality for species
   * †Prosciurus hogansoni – type locality for species
   * †Prosciurus vetustus
* †Protictis
   * †Protictis microlestes – or unidentified comparable form
   * †Protictis paralus – type locality for species
* Life restoration of a female (left) and male of the Oligocene-Miocene even-toed ungulate Protoceras. Charles R. Knight (1896). †Protoceras – tentative report
* †Protochelydra
   * †Protochelydra zangerli
* †Protophyllum
   * †Protophyllum semotum – type locality for species
* †Protungulatum
* †Pseudocylindrodon
   * †Pseudocylindrodon silvaticus
* †Psidium – tentative report
* Pterocarya
   * †Pterocarya hispida
* †Pterospermites
   * †Pterospermites cordata
* Illustration of a fossilized skull of the Paleocene multituberculate mammal Ptilodus †Ptilodus
   * †Ptilodus kummae
   * †Ptilodus montanus
   * †Ptilodus wyomingensis

## Q

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* †Queironius – type locality for genus
   * †Queironius praelapsus – type locality for species
* A living Quercus, or oak tree Quercus
   * †Quercus macneili
   * †Quercus sullyi
   * †Quercus yulensis
* †Quereuxia
   * †Quereuxia angulata

## R

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* †Reithroparamys
* A living Rhineura floridana, or North American worm lizard Rhineura – or unidentified comparable form

## S

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* Sagittaria
   * †Sagittaria megasperma
* †Salvinia
   * †Salvinia aureovallis – type locality for species
   * †Salvinia preauriculata
* Fossilized skeleton of the Eocene monitor lizard Saniwa †Saniwa
   * †Saniwa edura – type locality for species
   * †Saniwa ensidens – or unidentified comparable form
* †Sauropithecoides – type locality for genus
   * †Sauropithecoides charisticus – type locality for species
* †Scapherpeton
* †Selaginella
   * †Selaginella collieri
* †Simoedosaurus
   * †Simoedosaurus dakotensis – type locality for species
* †Sinclairella
* †Sparganium
   * †Sparganium antiquum
   * †Sparganium parvum – type locality for species
   * †Sparganium stygium
* †Spathorhynchus – or unidentified comparable form
* †Stibarus
   * †Stibarus montanus
* †Stillingia
   * †Stillingia casca – type locality for species
* Life restoration of the Eocene-Oligocene cow-sized rhinoceros Subhyracodon. Charles R. Knight (1890s). †Subhyracodon
   * †Subhyracodon occidentalis

## T

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* Taxodium
   * †Taxodium olrikii
* Fossilized mandible of the Eocene primate Teilhardina †Teilhardina
* †Ternstroemites
   * †Ternstroemites aureavallis – type locality for species
* †Tetonoides
   * †Tetonoides pearcei
* Thamnophis
* †Thryptacodon
   * †Thryptacodon australis
* †Thuites
   * †Thuites interruptus
* †Thuja
   * †Thuja interrupta
* Tinosaurus
* Life restoration of the Paleocene pantodont mammal Titanoides †Titanoides
   * †Titanoides primaevus – type locality for species
* †Toxotherium
* †Trapa
   * †Trapa angulata
* †Trichopterodomus – type locality for genus
   * †Trichopterodomus leonardi – type locality for species
* †Trigonias
* Trochocyathus
   * †Trochocyathus mitratus – type locality for species
* †Trochodendroides
   * †Trochodendroides serrulata
* †Tuberculacerta – type locality for genus
   * †Tuberculacerta pearsoni – type locality for species

## U

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* †Unuchinia
   * †Unuchinia dysmathes

## V

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* Leaves and fruit of a living Viburnum. †Viburnum
   * †Viburnum antiquum
   * †Viburnum tilioides

## W

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* Mounted fossilized skeleton of the Paleocene Alligator relative Wannaganosuchus †Wannaganosuchus – type locality for genus
   * †Wannaganosuchus brachymanus – type locality for species
* †Wardiaphyllum
   * †Wardiaphyllum daturaefolium
* †Willeumys
   * †Willeumys viduus
* †Woodwardia
   * †Woodwardia arctica
   * †Woodwardia gravida – type locality for species

## X

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* †Xestops – or unidentified comparable form

## Y

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* †Yoderimys
   * †Yoderimys stewarti – or unidentified comparable form

## Z

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* †Zingiberopsis – type locality for genus
   * †Zingiberopsis isonervosa – type locality for species
