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Kootenai, Montana, USA

Formation	Kootenai
Age:	122 - 66 Ma Cretaceous
Interval	Late Aptian
Lithology	shale, "shale"/sandstone, coal, siltstone, "siliciclastic"
Number of Collections	24
Number of Occurrences	171

Recorded Sample Locations

Location	Region	Stratigraphic Name
Great Falls Locality 7	Cascade County, Montana, USA	Kootenai
Great Falls	Cascade County, Montana, USA	Kootenai
Toxolophosaurus type locality	Madison County, Montana, USA	Kootenai
south side	Cascade County, Montana, USA	Kootenai
Meriditt mine	Judith Basin County, Montana, USA	Kootenai

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Pseudocycas douglasii species	7	Plantae : Tracheophyta : Cycadopsida : Cycadales : Pseudocycas : *Pseudocycas douglasii*	122.46 - 112.03 Ma Early/Lower Cretaceous
Zamites arcticus species	7	Plantae : Tracheophyta : Cycadopsida : Cycadales : Zamites : *Zamites arcticus*	122.46 - 112.03 Ma Early/Lower Cretaceous
Marchantiolites blairmorensis species	7	Plantae : Marchantiophyta : Marchantiopsida : Marchantiales : Marchantiaceae : Marchantiolites : *Marchantiolites blairmorensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Coniopteris simplex species	7	Plantae : Tracheophyta : Polypodiopsida : Cyatheales : Dicksoniaceae : Coniopteris : *Coniopteris simplex*	122.46 - 112.03 Ma Early/Lower Cretaceous
Parazollopsis cascadensis species	7	Plantae : Tracheophyta : Polypodiopsida : Salviniales : Parazollopsis : *Parazollopsis cascadensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Sphenopteris brulensis species	7	Plantae : Tracheophyta : Lyginopteridaceae : Sphenopteris : *Sphenopteris brulensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Sphenopteris goepperti species	7	Plantae : Tracheophyta : Lyginopteridaceae : Sphenopteris : *Sphenopteris goepperti*	122.46 - 112.03 Ma Early/Lower Cretaceous
Sphenopteris latiloba species	7	Plantae : Tracheophyta : Lyginopteridaceae : Sphenopteris : *Sphenopteris latiloba*	122.46 - 112.03 Ma Early/Lower Cretaceous
Sphenopteris mclearni species	7	Plantae : Tracheophyta : Lyginopteridaceae : Sphenopteris : *Sphenopteris mclearni*	122.46 - 112.03 Ma Early/Lower Cretaceous
Sphenopteris sp. genus	6	Plantae : Tracheophyta : Lyginopteridaceae : *Sphenopteris*	122.46 - 112.03 Ma Early/Lower Cretaceous
Spermatophyta phylum	2	Plantae : Spermatophyta	122.46 - 112.03 Ma Early/Lower Cretaceous
Lygobius knowltoni species	7	Animalia : Arthropoda : Insecta : Blattodea : Lygobiidae : Lygobius : *Lygobius knowltoni*	125 - 113 Ma Early/Lower Cretaceous
Hadrosauridae family	5	Animalia : Chordata : Reptilia : Dinosauria : Hadrosauridae	125 - 100.5 Ma Early/Lower Cretaceous
Toxolophosaurus cloudi species	7	Animalia : Chordata : Reptilia : Rhynchocephalia : Sphenodontidae : Toxolophosaurus : *Toxolophosaurus cloudi*	125 - 100.5 Ma Early/Lower Cretaceous
Diettertia montanensis species	7	Plantae : Marchantiophyta : Jungermanniopsida : Jungermanniales : Diettertiaceae : Diettertia : *Diettertia montanensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Metzgeriites montanensis species	7	Plantae : Marchantiophyta : Jungermanniopsida : Metzgeriales : Metzgeriites : *Metzgeriites montanensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Equisetum cascadensis species	7	Plantae : Tracheophyta : Polypodiopsida : Equisetales : Equisetaceae : Equisetum : *Equisetum cascadensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Equisetum montanensis species	7	Plantae : Tracheophyta : Polypodiopsida : Equisetales : Equisetaceae : Equisetum : *Equisetum montanensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Sagenopteris elliptica species	7	Plantae : Tracheophyta : Ginkgoopsida : Caytoniaceae : Sagenopteris : *Sagenopteris elliptica*	122.46 - 112.03 Ma Early/Lower Cretaceous
Sagenopteris mclearni species	7	Plantae : Tracheophyta : Ginkgoopsida : Caytoniaceae : Sagenopteris : *Sagenopteris mclearni*	122.46 - 112.03 Ma Early/Lower Cretaceous
Sagenopteris williamsii species	7	Plantae : Tracheophyta : Ginkgoopsida : Caytoniaceae : Sagenopteris : *Sagenopteris williamsii*	122.46 - 112.03 Ma Early/Lower Cretaceous
Ginkgo pluripartita species	7	Plantae : Tracheophyta : Ginkgoopsida : Ginkgoales : Ginkgoaceae : Ginkgo : *Ginkgo pluripartita*	122.46 - 112.03 Ma Early/Lower Cretaceous
Minerisporites sp. genus	6	Plantae : Tracheophyta : Lycopodiopsida : Isoetales : *Minerisporites*	122.46 - 112.03 Ma Early/Lower Cretaceous
Coniopteris hymenophylloides species	7	Plantae : Tracheophyta : Polypodiopsida : Cyatheales : Dicksoniaceae : Coniopteris : *Coniopteris hymenophylloides*	122.46 - 112.03 Ma Early/Lower Cretaceous
Hausmannia montanensis species	7	Plantae : Tracheophyta : Polypodiopsida : Gleicheniales : Dipteridaceae : Hausmannia : *Hausmannia montanensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Arcellites sp. genus	6	Plantae : *Arcellites*	122.46 - 112.03 Ma Early/Lower Cretaceous
Cladophlebis constricta species	7	Plantae : Tracheophyta : Polypodiopsida : Osmundales : Osmundaceae : Cladophlebis : *Cladophlebis constricta*	122.46 - 112.03 Ma Early/Lower Cretaceous
Cladophlebis inclinata species	7	Plantae : Tracheophyta : Polypodiopsida : Osmundales : Osmundaceae : Cladophlebis : *Cladophlebis inclinata*	122.46 - 112.03 Ma Early/Lower Cretaceous
Cladophlebis oblongifolia species	7	Plantae : Tracheophyta : Polypodiopsida : Osmundales : Osmundaceae : Cladophlebis : *Cladophlebis oblongifolia*	122.46 - 112.03 Ma Early/Lower Cretaceous
Cladophlebis oerstedi species	7	Plantae : Tracheophyta : Polypodiopsida : Osmundales : Osmundaceae : Cladophlebis : *Cladophlebis oerstedi*	122.46 - 112.03 Ma Early/Lower Cretaceous
Cladophlebis virginiensis species	7	Plantae : Tracheophyta : Polypodiopsida : Osmundales : Osmundaceae : Cladophlebis : *Cladophlebis virginiensis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Deltoidospora sp. genus	6	Plantae : Tracheophyta : *Deltoidospora*	145 - 66 Ma Cretaceous
Deltoidospora hallii species	7	Plantae : Pteridophyta : Pteridopsida : Deltoidospora : *Deltoidospora hallii*	145 - 66 Ma Cretaceous
Polypodiales order	4	Plantae : Pteridophyta : Pteridopsida : Polypodiales	122.46 - 112.03 Ma Early/Lower Cretaceous
Acrostichopteris longipennis species	7	Plantae : Tracheophyta : Polypodiopsida : Schizaeales : Acrostichopteridaceae : Acrostichopteris : *Acrostichopteris longipennis*	122.46 - 112.03 Ma Early/Lower Cretaceous
Klukia canadensis species	7	Plantae : Tracheophyta : Polypodiopsida : Schizaeales : Klukiaceae : Klukia : *Klukia canadensis*	122.46 - 112.03 Ma Early/Lower Cretaceous

References

Mitchell E. G. (1908) An apparently new protoblattid family from the Lower Cretaceous, Smithsonian Miscellaneous Collections 52, 85-86

Miner E. L. (1935) Paleobotanical Examinations of Cretaceous and Tertiary Coals: II. Cretaceous and Tertiary Coals from Montana, The American Midland Naturalist 16 4, 616-625

Lull R. S., Wright N. E. (1942) Hadrosaurian dinosaurs of North America, Geological Society of America Special Paper 40, 1-242

Olson E. C. (1960) A trilophosaurid reptile from the Kootenai Formation (Lower Cretaceous), Journal of Paleontology 34 3, 551-555

Lapasha C. A., Miller C. N. (1985) Flora of the Early Cretaceous Kootenai Formation in Montana, Bryophytes and Tracheophytes Excluding Conifers, Palaeontographica Abteilung B 196, 111-145

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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