Group 1 - Elements
ⓘ	Gold	1.AA.05	Au
Group 4 - Oxides and Hydroxides
ⓘ	Quartz var. Chalcedony	4.DA.05	SiO₂
ⓘ	var. Moss Agate	4.DA.05	SiO₂
ⓘ		4.DA.05	SiO₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
Unclassified
ⓘ	'Jasper'	-

List of minerals for each chemical element

O	Oxygen
O	ⓘ Baryte	BaSO₄
O	ⓘ Quartz var. Chalcedony	SiO₂
O	ⓘ Quartz var. Moss Agate	SiO₂
O	ⓘ Quartz	SiO₂
Si	Silicon
Si	ⓘ Quartz var. Chalcedony	SiO₂
Si	ⓘ Quartz var. Moss Agate	SiO₂
Si	ⓘ Quartz	SiO₂
S	Sulfur
S	ⓘ Baryte	BaSO₄
Ba	Barium
Ba	ⓘ Baryte	BaSO₄
Au	Gold
Au	ⓘ Gold	Au

Fossils

There are 15 fossil localities from the PaleoBioDB database within this region.

BETA TEST - These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences

119

Youngest Fossil Listed

0.30 Ma (Pleistocene)

Oldest Fossil Listed

72.1 Ma (Late/Upper Cretaceous)

Stratigraphic Units

Click here to view 6 stratigraphic units.

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Triceratops genus	Animalia : Chordata : Reptilia : Dinosauria : Ceratopsidae : *Triceratops*	72.1 - 66 Ma Late/Upper Cretaceous
Camelops genus	Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : *Camelops*	1.8 - 0.3 Ma Pleistocene
Bootherium genus	Animalia : Chordata : Mammalia : Artiodactyla : Bovidae : *Bootherium*	1.8 - 0.3 Ma Pleistocene
Equus genus	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : *Equus*	1.8 - 0.3 Ma Pleistocene
Arctodus simus species	Animalia : Chordata : Mammalia : Carnivora : Ursidae : Arctodus : *Arctodus simus*	1.8 - 0.3 Ma Pleistocene
Bison latifrons species	Animalia : Chordata : Mammalia : Artiodactyla : Bovidae : Bison : *Bison latifrons*	1.8 - 0.3 Ma Pleistocene
Mammut americanum species	Animalia : Chordata : Mammalia : Proboscidea : Mammutidae : Mammut : *Mammut americanum*	1.8 - 0.3 Ma Pleistocene
Mammuthus columbi species	Animalia : Chordata : Mammalia : Proboscidea : Elephantidae : Mammuthus : *Mammuthus columbi*	1.8 - 0.3 Ma Pleistocene
Paramylodon harlani species	Animalia : Chordata : Mammalia : Xenarthra : Mylodontidae : Paramylodon : *Paramylodon harlani*	1.8 - 0.3 Ma Pleistocene
Megalonyx jeffersonii species	Animalia : Chordata : Mammalia : Xenarthra : Megalonychidae : Megalonyx : *Megalonyx jeffersonii*	1.8 - 0.3 Ma Pleistocene
Platanaceae family	Plantae : Tracheophyta : Magnoliopsida : Proteales : Platanaceae	70.6 - 66 Ma Late/Upper Cretaceous
Beringiaphyllum cupanioides species	Beringiaphyllum : *Beringiaphyllum cupanioides*	66 - 56 Ma Paleocene
Platanus raynoldsi species	Plantae : Spermatophyta : Magnoliopsida : Proteales : Platanaceae : Platanus : *Platanus raynoldsi*	66 - 56 Ma Paleocene
Lauraceae family	Plantae : Tracheophyta : Magnoliopsida : Laurales : Lauraceae	66 - 61.7 Ma Paleocene
Celtis aspera species	Plantae : Tracheophyta : Magnoliopsida : Rosales : Cannabaceae : Celtis : *Celtis aspera*	66 - 56 Ma Paleocene
Ficus genus	Plantae : Tracheophyta : Magnoliopsida : Rosales : Moraceae : *Ficus*	66 - 56 Ma Paleocene
Cercidiphyllum genus	Plantae : Tracheophyta : Magnoliopsida : Saxifragales : Cercidiphyllaceae : *Cercidiphyllum*	70.6 - 56 Ma Phanerozoic
Cinnamomum genus	Plantae : Tracheophyta : Magnoliopsida : Laurales : Lauraceae : *Cinnamomum*	70.6 - 66 Ma Late/Upper Cretaceous
Celastrus genus	Plantae : Tracheophyta : Magnoliopsida : Celastrales : Celastraceae : *Celastrus*	70.6 - 66 Ma Late/Upper Cretaceous
Rhamnus genus	Plantae : Tracheophyta : Magnoliopsida : Rosales : Rhamnaceae : *Rhamnus*	66 - 56 Ma Paleocene
Nyssa genus	Plantae : Tracheophyta : Magnoliopsida : Cornales : Nyssaceae : *Nyssa*	66 - 56 Ma Paleocene
Fraxinus genus	Plantae : Tracheophyta : Magnoliopsida : Lamiales : Oleaceae : *Fraxinus*	66 - 56 Ma Paleocene
Trochodendrales order	Plantae : Tracheophyta : Magnoliopsida : Trochodendrales	70.6 - 66 Ma Late/Upper Cretaceous
Equisetum genus	Plantae : Tracheophyta : Polypodiopsida : Equisetales : Equisetaceae : *Equisetum*	66 - 56 Ma Paleocene
Magnoliopsida class	Plantae : Tracheophyta : Magnoliopsida	70.6 - 61.7 Ma Phanerozoic
Isoetites horridus species	Plantae : Pteridophyta : Lycopsida : Isoetaceae : Isoetites : *Isoetites horridus*	66 - 56 Ma Paleocene
Osmunda macrophylla species	Plantae : Tracheophyta : Polypodiopsida : Osmundales : Osmundaceae : Osmunda : *Osmunda macrophylla*	66 - 56 Ma Paleocene
Glyptostrobus genus	Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : *Glyptostrobus*	66 - 56 Ma Paleocene
Metasequoia occidentalis species	Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Metasequoia : *Metasequoia occidentalis*	70.6 - 56 Ma Phanerozoic
Betula genus	Plantae : Tracheophyta : Magnoliopsida : Fagales : Betulaceae : *Betula*	66 - 56 Ma Paleocene
Paranymphaea crassifolia species	Plantae : Tracheophyta : Magnoliopsida : Nymphaeales : Nymphaeaceae : Paranymphaea : *Paranymphaea crassifolia*	66 - 56 Ma Paleocene
Cercidiphyllum genetrix species	Plantae : Spermatophyta : Magnoliopsida : Saxifragales : Cercidiphyllaceae : Cercidiphyllum : *Cercidiphyllum genetrix*	66 - 61.7 Ma Paleocene
Averrhoites affinis species	Plantae : Spermatophyta : Magnoliopsida : Sapindales : Oxalidaceae : Averrhoites : *Averrhoites affinis*	66 - 56 Ma Paleocene
Penosphyllum cordatum species	Plantae : Spermatophyta : Magnoliopsida : Malvales : Sterculiaceae : Penosphyllum : *Penosphyllum cordatum*	66 - 56 Ma Paleocene
Ternstroemites aureavallis species	Plantae : Tracheophyta : Magnoliopsida : Ericales : Pentaphylacaceae : Ternstroemites : *Ternstroemites aureavallis*	66 - 61.7 Ma Paleocene
Cornus hyperborea species	Plantae : Tracheophyta : Magnoliopsida : Cornales : Cornaceae : Cornus : *Cornus hyperborea*	66 - 56 Ma Paleocene
Trochodendroides genus	Plantae : Tracheophyta : Magnoliopsida : Trochodendrales : Trochodendraceae : *Trochodendroides*	70.6 - 66 Ma Late/Upper Cretaceous
Ampelopsis acerifolia species	Plantae : Tracheophyta : Magnoliopsida : Vitales : Vitaceae : Ampelopsis : *Ampelopsis acerifolia*	66 - 56 Ma Paleocene
Trapa angulata species	Plantae : Tracheophyta : Magnoliopsida : Myrtales : Lythraceae : Trapa : *Trapa angulata*	66 - 56 Ma Paleocene
Nelumbago montanum species	Plantae : Spermatophyta : Magnoliopsida : Proteales : Nelumbonaceae : Nelumbago : *Nelumbago montanum*	66 - 56 Ma Paleocene
Trochodendroides flabella species	Plantae : Spermatophyta : Magnoliopsida : Saxifragales : Cercidiphyllaceae : Trochodendroides : *Trochodendroides flabella*	66 - 61.7 Ma Paleocene
Populus genus	Plantae : Tracheophyta : Magnoliopsida : Malpighiales : Salicaceae : *Populus*	66 - 61.7 Ma Paleocene
Dryophyllum genus	Plantae : Tracheophyta : Magnoliopsida : Fagales : Juglandaceae : *Dryophyllum*	70.6 - 66 Ma Late/Upper Cretaceous
Credneria genus	Plantae : Tracheophyta : Magnoliopsida : Malpighiales : Salicaceae : *Credneria*	66 - 56 Ma Paleocene
Platanus raynoldsii species	Plantae : Tracheophyta : Magnoliopsida : Proteales : Platanaceae : Platanus : *Platanus raynoldsii*	66 - 61.7 Ma Paleocene
Zelkova genus	Plantae : Tracheophyta : Magnoliopsida : Rosales : Ulmaceae : *Zelkova*	66 - 56 Ma Paleocene
Juglandiphyllites glabra species	Juglandiphyllites : *Juglandiphyllites glabra*	66 - 61.7 Ma Paleocene
Ficus (Ficus) subgenus	Animalia : Mollusca : Gastropoda : Ficidae : Ficus : *Ficus (Ficus)*	66 - 56 Ma Paleocene
Vitis genus	Plantae : Tracheophyta : Magnoliopsida : Vitales : Vitaceae : *Vitis*	66 - 56 Ma Paleocene
Magnoliid unranked clade	Plantae : Spermatophyta : Magnoliopsida : Magnoliid	70.6 - 66 Ma Late/Upper Cretaceous
Araucaria longifolia species	Plantae : Tracheophyta : Pinopsida : Pinales : Araucariaceae : Araucaria : *Araucaria longifolia*	66 - 56 Ma Paleocene
Davidia antiqua species	Animalia : Mollusca : Bivalvia : Hippuritida : Cycloconchidae : Actinodonta : *Davidia antiqua*	66 - 56 Ma Paleocene
Browniea serrata species	Browniea : *Browniea serrata*	66 - 61.7 Ma Paleocene
Leepierceia preartocarpoides species	Leepierceia : *Leepierceia preartocarpoides*	70.6 - 66 Ma Late/Upper Cretaceous
Osmunda greenlandica species	Plantae : Tracheophyta : Polypodiopsida : Osmundales : Osmundaceae : Osmunda : *Osmunda greenlandica*	66 - 56 Ma Paleocene
Woodwardia arctica species	Plantae : Tracheophyta : Polypodiopsida : Polypodiales : Blechnaceae : Woodwardia : *Woodwardia arctica*	66 - 56 Ma Paleocene
Marchantia pealei species	Marchantia : *Marchantia pealei*	66 - 56 Ma Paleocene
Mnium montanense species	Mnium : *Mnium montanense*	66 - 56 Ma Paleocene
Dryopteris serrata species	Plantae : Tracheophyta : Polypodiopsida : Polypodiales : Dryopteridaceae : Dryopteris : *Dryopteris serrata*	66 - 56 Ma Paleocene
Lastrea goldiana species	Lastrea : *Lastrea goldiana*	66 - 56 Ma Paleocene
Gleichenia hesperia species	Plantae : Tracheophyta : Polypodiopsida : Gleicheniales : Gleicheniaceae : Gleichenia : *Gleichenia hesperia*	66 - 56 Ma Paleocene
Laurophyllum perseanum species	Plantae : Tracheophyta : Magnoliopsida : Laurales : Lauraceae : Laurophyllum : *Laurophyllum perseanum*	66 - 56 Ma Paleocene
Laurus socialis species	Plantae : Tracheophyta : Magnoliopsida : Laurales : Lauraceae : Laurus : *Laurus socialis*	66 - 56 Ma Paleocene
Lindera obtusata species	Lindera : *Lindera obtusata*	66 - 56 Ma Paleocene
Sabal genus	*Sabal*	66 - 56 Ma Paleocene
Quercus sullyi species	Plantae : Tracheophyta : Magnoliopsida : Fagales : Fagaceae : Quercus : *Quercus sullyi*	66 - 56 Ma Paleocene
Paleonelumbo macroloba species	Paleonelumbo : *Paleonelumbo macroloba*	66 - 61.7 Ma Paleocene
Corylus insignis species	Plantae : Tracheophyta : Magnoliopsida : Fagales : Betulaceae : Corylus : *Corylus insignis*	66 - 56 Ma Paleocene

Fossil Localities

Click to show 15 fossil localities

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Custer_County,_Montana
Wikidata ID:	Q490789
GeoNames ID:	5647449

Localities in this Region

USA

Montana
- Custer County

Other Regions, Features and Areas that Intersect

North America PlateTectonic Plate

Williston BasinBasin
Wyoming DomainDomain

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