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Colorado - Niobrara

GroupColorado
FormationNiobrara
Member(s)Fort Hays Limestone
Lower
Smoky Hill Chalk
Smoky Hill Shale
Age:83.6 - 70.6 Ma
Late/Upper Cretaceous
IntervalEarly Coniacian - Early Campanian
Lithologychalk/"shale", "limestone", chalk
Number of Collections14
Number of Occurrences48

Recorded Sample Locations

LocationRegionStratigraphic Name
B. F. Mudge collectionLogan County, Kansas, USAColorado - Niobrara
Carrot RiverSaskatchewan, CanadaColorado - Niobrara - Lower
Carrot RiverSaskatchewan, CanadaColorado - Niobrara - Lower
3 miles southwest of Castle RockGove County, Kansas, USAColorado - Niobrara
Smoky Hill River Logan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Russell SpringsLogan County, Kansas, USAColorado - Niobrara
Castle Rock-Hackberry Gove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Smoky Hill breaksGove County, Kansas, USAColorado - Niobrara
tributary of Smoky Hill RiverGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
southwest of GladeRooks County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
northeastern Lane CountyLane County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
south sideEllis County, Kansas, USAColorado - Niobrara - Fort Hays Limestone
Cheney propertyGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Trego Co. nodosaur Trego County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Pueblo SectionPueblo County, Colorado, USAColorado - Niobrara - Smoky Hill Shale
Smoky Hill River forkMorris County, Kansas, USAColorado - Niobrara
The PyramidsGove County, Kansas, USAColorado - Niobrara
near ElkaderLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
10 miles northwest of WakeeneyTrego County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
KUVP Gra-2Graham County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Bow Creek; Sugar Bowl MoundRooks County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Southwest of GoveGove County, Kansas, USAColorado - Niobrara
KUPV Logan County collecting locality 20Logan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Baptornis advenus type localityWallace County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Goblin HollowLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Butte CreekLogan County, Kansas, USAColorado - Niobrara
W. G. Bourne TylosaurusScott County, Kansas, USAColorado - Niobrara
north sideLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
east sideLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
south sideLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Twin Butte CreekLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Pteranodon comptus typeGraham County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
3 mi NE Monument RocksGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
KJ1Trego County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
KJ2Trego County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
near Castle RockTrego County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
2 miles NE of PenokeeGraham County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
near Plum CreekGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Pteranodon nanus holotypeRooks County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
HackberryGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Smoky RiverGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
12 miles south of Russell SpringsLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
north sideLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Hell's BarGove County, Kansas, USAColorado - Niobrara
SW Portland Cement QuarryBoulder County, Colorado, USAColorado - Niobrara - Smoky Hill Chalk
Southern Gove CountyGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
canyon in Gove CountyHodgeman County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Eastern Gove CountyGray County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-13962 localityEllis County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-13963 localityEllis County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-13964 localityGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-13965 localityGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-13966 localityGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
LACMNH 148920 localityLane County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
USGS D3645Colfax County, New Mexico, USAColorado - Niobrara - Smoky Hill Chalk
UticaNess County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Castle RockGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-2295 localityEllis County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
North of Scott CityLogan County, Kansas, USAColorado - Niobrara
Near MiltonCavalier County, North Dakota, USAColorado - Niobrara
Near WalsenbergLas Animas County, Colorado, USAColorado - Niobrara
Merindahl DamYankton County, South Dakota, USAColorado - Niobrara - Smoky Hill Chalk
Thorhill CreekManitoba, CanadaColorado - Niobrara - Smoky Hill Chalk
Bilby's RanchLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Hell CreekGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Plum Creek Gove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Elasmosaurus sternbergi type localityGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Elasmosaurus nobilis type localityJewell County, Kansas, USAColorado - Niobrara - Fort Hays Limestone
8 km east of Fort WallaceWallace County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
22.5 km east of Fort WallaceLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
east of Wallace Wallace County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Elasmosaurus marshii type localityLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
LACM 5539 localityRooks County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-2495 localityTrego County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-78 localityGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-9350 localityGraham County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
FHSM VP-14848 localityEllis County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
MCZ 1589 localityLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
East of Fort Wallace Logan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
5 miles northeast of ElkaderLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
Red Rock Canyon Open Space tracksiteEl Paso County, Colorado, USAColorado - Niobrara - Fort Hays Limestone
Sampson's pastureGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
TweedGove County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
3 mi south of SolomonDickinson County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk
south sideLogan County, Kansas, USAColorado - Niobrara - Smoky Hill Chalk

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Devils River Limestone105 - 99.6 Ma
Cretaceous
limestone9
Niobrara83.5 - 70.6 Ma
Late/Upper Cretaceous
sandstone/"shale", "shale", chalk22
Niobrara - Smoky Hill Shale83.5 - 70.6 Ma
Late/Upper Cretaceous
shale, "limestone", sandstone158
Colorado - Carlile Shale - Codell Sandstone93.5 - 89.3 Ma
Late/Upper Cretaceous
sandstone, grainstone7
Colorado - Carlile Shale - Fairport93.5 - 89.3 Ma
Late/Upper Cretaceous
chalk, "limestone"22
Colorado - Favel - Keld93.5 - 89.3 Ma
Late/Upper Cretaceous
shale1
Colorado - Niobrara - Fort Hays Limestone89.3 - 85.8 Ma
Late/Upper Cretaceous
limestone/"shale", "limestone"/grainstone3
Colorado - Niobrara - Lower93.5 - 83.5 Ma
Late/Upper Cretaceous
shale10
Colorado - Niobrara - Smoky Hill Chalk83.5 - 70.6 Ma
Late/Upper Cretaceous
chalk, "shale", "carbonate", mudstone, "limestone", "shale"/"limestone"127
Colorado - Niobrara - Smoky Hill Shale85.8 - 83.5 Ma
Late/Upper Cretaceous
shale, "limestone"42
Dakota99.6 - 93.5 Ma
Late/Upper Cretaceous
coal, sandstone/"shale", sandstone23

Recorded Fossils

Accepted NameHierarchyAge
Acrothoracica
superorder
3.7Animalia : Arthropoda : Maxillopoda : Acrothoracica86.3 - 83.6 Ma
Late/Upper Cretaceous
Scalpellidae
family
5Animalia : Arthropoda : Maxillopoda : Pedunculata : Scalpellidae86.3 - 83.6 Ma
Late/Upper Cretaceous
Anogmius polymicrodus
species
7Animalia : Chordata : Actinopterygii : Albuliformes : Albulidae : Anogmius : Anogmius polymicrodus85.8 - 70.6 Ma
Late/Upper Cretaceous
Apsopelix sp.
genus
6Animalia : Chordata : Actinopteri : Albuliformes : Albulidae : Apsopelix86.3 - 83.6 Ma
Late/Upper Cretaceous
Urenchelys abditus
species
7Animalia : Chordata : Actinopterygii : Anguilliformes : Muraenidae : Urenchelys : Urenchelys abditus86.3 - 83.6 Ma
Late/Upper Cretaceous
Pachyrhizodus sp.
genus
6Animalia : Chordata : Actinopteri : Crossognathiformes : Pachyrhizodontidae : Pachyrhizodus85.8 - 70.6 Ma
Late/Upper Cretaceous
Pachyrhizodus caninus
species
7Animalia : Chordata : Actinopteri : Crossognathiformes : Pachyrhizodontidae : Pachyrhizodus : Pachyrhizodus caninus86.3 - 83.6 Ma
Late/Upper Cretaceous
Holocentridae
family
5Animalia : Chordata : Actinopteri : Holocentriformes : Holocentridae86.3 - 83.6 Ma
Late/Upper Cretaceous
Ichthyodectes sp.
genus
6Animalia : Chordata : Actinopteri : Ichthyodectiformes : Ichthyodectidae : Ichthyodectes86.3 - 83.6 Ma
Late/Upper Cretaceous
Ichthyodectes anaides
species
7Animalia : Chordata : Actinopteri : Ichthyodectiformes : Ichthyodectidae : Ichthyodectes : Ichthyodectes anaides85.8 - 70.6 Ma
Late/Upper Cretaceous
Xiphactinus sp.
genus
6Animalia : Chordata : Actinopteri : Ichthyodectiformes : Ichthyodectidae : Xiphactinus85.8 - 70.6 Ma
Late/Upper Cretaceous
Xiphactinus audax
species
7Animalia : Chordata : Actinopteri : Ichthyodectiformes : Ichthyodectidae : Xiphactinus : Xiphactinus audax86.3 - 83.6 Ma
Late/Upper Cretaceous
Gillicus arcuatus
species
7Animalia : Chordata : Actinopteri : Ichthyodectiformes : Saurodontidae : Gillicus : Gillicus arcuatus86.3 - 83.6 Ma
Late/Upper Cretaceous
Protosphyraena tenuis
species
7Animalia : Chordata : Actinopteri : Pachycormiformes : Pachycormidae : Protosphyraena : Protosphyraena tenuis86.3 - 83.6 Ma
Late/Upper Cretaceous
Cimolichthys nepaholica
species
7Animalia : Chordata : Actinopteri : Salmoniformes : Enchodontidae : Cimolichthys : Cimolichthys nepaholica86.3 - 83.6 Ma
Late/Upper Cretaceous
Bananogmius sp.
genus
6Animalia : Chordata : Actinopteri : Tselfatiiformes : Plethodidae : Bananogmius86.3 - 83.6 Ma
Late/Upper Cretaceous
Baptornis advenus
species
7Animalia : Chordata : Aves : Hesperornithiformes : Baptornithidae : Baptornis : Baptornis advenus89.8 - 83.6 Ma
Late/Upper Cretaceous
Hesperornis sp.
genus
6Animalia : Chordata : Aves : Hesperornithiformes : Hesperornithidae : Hesperornis89.3 - 70.6 Ma
Late/Upper Cretaceous
Hesperornis regalis
species
7Animalia : Chordata : Aves : Hesperornithiformes : Hesperornithidae : Hesperornis : Hesperornis regalis85.8 - 83.5 Ma
Late/Upper Cretaceous
Parahesperornis sp.
genus
6Animalia : Chordata : Aves : Hesperornithiformes : Hesperornithidae : Parahesperornis83.5 - 70.6 Ma
Late/Upper Cretaceous
Parahesperornis alexi
species
7Animalia : Chordata : Aves : Hesperornithiformes : Hesperornithidae : Parahesperornis : Parahesperornis alexi89.8 - 83.6 Ma
Late/Upper Cretaceous
Fumicollis hoffmani
species
7Animalia : Chordata : Aves : Hesperornithiformes : Fumicollis : Fumicollis hoffmani89.3 - 70.6 Ma
Late/Upper Cretaceous
Apatornis celer
species
7Animalia : Chordata : Aves : Apatornis : Apatornis celer89.8 - 83.6 Ma
Late/Upper Cretaceous
Iaceornis marshi
species
7Animalia : Chordata : Aves : Iaceornis : Iaceornis marshi85.8 - 70.6 Ma
Late/Upper Cretaceous
Ichthyornis dispar
species
7Animalia : Chordata : Aves : Ichthyornis : Ichthyornis dispar89.3 - 70.6 Ma
Late/Upper Cretaceous
Ptychodus mortoni
species
7Animalia : Chordata : Chondrichthyes : Hybodontiformes : Ptychodontidae : Ptychodus : Ptychodus mortoni86.3 - 83.6 Ma
Late/Upper Cretaceous
Ptychodus rugosus
species
7Animalia : Chordata : Chondrichthyes : Hybodontiformes : Ptychodontidae : Ptychodus : Ptychodus rugosus93.5 - 83.5 Ma
Late/Upper Cretaceous
Squalicorax sp.
genus
6Animalia : Chordata : Elasmobranchii : Lamniformes : Lamnidae : Squalicorax89.3 - 85.8 Ma
Late/Upper Cretaceous
Squalicorax falcatus
species
7Animalia : Chordata : Chondrichthyes : Lamniformes : Anacoracidae : Squalicorax : Squalicorax falcatus93.5 - 83.5 Ma
Late/Upper Cretaceous
Squalicorax kaupi
species
7Animalia : Chordata : Chondrichthyes : Lamniformes : Anacoracidae : Squalicorax : Squalicorax kaupi86.3 - 83.6 Ma
Late/Upper Cretaceous
Cretodus sp.
genus
6Animalia : Chordata : Elasmobranchii : Lamniformes : Cretoxyrhinidae : Cretodus93.5 - 83.5 Ma
Late/Upper Cretaceous
Cretoxyrhina mantelli
species
7Animalia : Chordata : Chondrichthyes : Lamniformes : Cretoxyrhinidae : Cretoxyrhina : Cretoxyrhina mantelli85.8 - 83.5 Ma
Late/Upper Cretaceous
Odontaspis sp.
genus
6Animalia : Chordata : Elasmobranchii : Lamniformes : Odontaspididae : Odontaspis93.5 - 83.5 Ma
Late/Upper Cretaceous
Synodontaspis sp.
genus
6Animalia : Chordata : Chondrichthyes : Lamniformes : Odontaspididae : Synodontaspis93.5 - 83.5 Ma
Late/Upper Cretaceous
Cretomanta canadensis
species
7Animalia : Chordata : Chondrichthyes : Cretomanta : Cretomanta canadensis93.5 - 83.5 Ma
Late/Upper Cretaceous
Rhinobatos sp.
genus
6Animalia : Chordata : Chondrichthyes : Rajiformes : Rhinobatidae : Rhinobatos93.5 - 83.5 Ma
Late/Upper Cretaceous
Hadrosauridae
family
5Animalia : Chordata : Reptilia : Dinosauria : Hadrosauridae89.3 - 85.8 Ma
Late/Upper Cretaceous
Nodosauridae
family
5Animalia : Chordata : Ornithischia : Nodosauridae85.8 - 83.5 Ma
Late/Upper Cretaceous
Ankylosauria
unranked clade
99Animalia : Chordata : Ornithischia : Ankylosauria89.3 - 85.8 Ma
Late/Upper Cretaceous
Claosaurus agilis
species
7Animalia : Chordata : Reptilia : Dinosauria : Hadrosauridae : Claosaurus : Claosaurus agilis89.3 - 70.6 Ma
Late/Upper Cretaceous
Niobrarasaurus coleii
species
7Animalia : Chordata : Reptilia : Dinosauria : Nodosauridae : Niobrarasaurus : Niobrarasaurus coleii89.3 - 85.8 Ma
Late/Upper Cretaceous
Empo sp.
genus
6Animalia : Chordata : Osteichthyes : Heteromi : Stratodontidae : Empo85.8 - 70.6 Ma
Late/Upper Cretaceous
Nyctosaurus sp.
genus
6Animalia : Chordata : Reptilia : Pterosauria : Nyctosauridae : Nyctosaurus85.8 - 70.6 Ma
Late/Upper Cretaceous
Nyctosaurus bonneri
species
7Animalia : Chordata : Reptilia : Pterosauria : Nyctosauridae : Nyctosaurus : Nyctosaurus bonneri85.8 - 70.6 Ma
Late/Upper Cretaceous
Nyctosaurus gracilis
species
7Animalia : Chordata : Reptilia : Pterosauria : Nyctosauridae : Nyctosaurus : Nyctosaurus gracilis85.8 - 70.6 Ma
Late/Upper Cretaceous
Nyctosaurus nanus
species
7Animalia : Chordata : Reptilia : Pterosauria : Nyctosauridae : Nyctosaurus : Nyctosaurus nanus89.3 - 83.5 Ma
Late/Upper Cretaceous
Pteranodon sp.
genus
6Animalia : Chordata : Reptilia : Pteranodon89.8 - 83.6 Ma
Late/Upper Cretaceous
Pteranodon longiceps
species
7Animalia : Chordata : Reptilia : Pterosauria : Pteranodontidae : Pteranodon : Pteranodon longiceps85.8 - 70.6 Ma
Late/Upper Cretaceous
Pteranodon sternbergi
species
7Animalia : Chordata : Reptilia : Pterosauria : Pteranodontidae : Pteranodon : Pteranodon sternbergi89.3 - 83.5 Ma
Late/Upper Cretaceous
Dawndraco kanzai
species
7Animalia : Chordata : Reptilia : Pterosauria : Pteranodontidae : Dawndraco : Dawndraco kanzai89.3 - 83.5 Ma
Late/Upper Cretaceous
Elasmosauridae
family
5Animalia : Chordata : Reptilia : Sauropterygia : Brimosaurus : Elasmosauridae86.3 - 83.6 Ma
Late/Upper Cretaceous
Styxosaurus snowii
species
7Animalia : Chordata : Reptilia : Sauropterygia : Elasmosauridae : Styxosaurus : Styxosaurus snowii83.5 - 70.6 Ma
Late/Upper Cretaceous
Plesiosauria
unranked clade
99Animalia : Chordata : Reptilia : Sauropterygia : Plesiosauria86.3 - 83.6 Ma
Late/Upper Cretaceous
Dolichorhynchops sp.
genus
6Animalia : Chordata : Reptilia : Polycotylidae : Dolichorhynchops86.3 - 72.1 Ma
Late/Upper Cretaceous
Dolichorhynchops osborni
species
7Animalia : Chordata : Reptilia : Polycotylidae : Dolichorhynchops : Dolichorhynchops osborni93.9 - 70.6 Ma
Late/Upper Cretaceous
Polycotylus latipinnis
species
7Animalia : Chordata : Reptilia : Polycotylidae : Polycotylus : Polycotylus latipinnis83.5 - 70.6 Ma
Late/Upper Cretaceous
Coniasaurus sp.
genus
6Animalia : Chordata : Reptilia : Squamata : Dolichosauridae : Coniasaurus85.8 - 83.5 Ma
Late/Upper Cretaceous
Clidastes propython
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Clidastes : Clidastes propython89.8 - 83.6 Ma
Late/Upper Cretaceous
Ectenosaurus clidastoides
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Ectenosaurus : Ectenosaurus clidastoides86.3 - 83.6 Ma
Late/Upper Cretaceous
Halisaurus sternbergi
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Halisaurus : Halisaurus sternbergi85.8 - 70.6 Ma
Late/Upper Cretaceous
Mosasauridae
family
5Animalia : Chordata : Reptilia : Squamata : Mosasauridae89.8 - 83.6 Ma
Late/Upper Cretaceous
Mosasaurinae
subfamily
5.3Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Mosasaurinae86.3 - 83.6 Ma
Late/Upper Cretaceous
Platecarpus sp.
genus
6Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Platecarpus93.9 - 83.6 Ma
Late/Upper Cretaceous
Platecarpus planifrons
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Platecarpus : Platecarpus planifrons86.3 - 83.6 Ma
Late/Upper Cretaceous
Platecarpus tympaniticus
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Platecarpus : Platecarpus tympaniticus93.9 - 83.6 Ma
Late/Upper Cretaceous
Selmasaurus johnsoni
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Selmasaurus : Selmasaurus johnsoni85.8 - 70.6 Ma
Late/Upper Cretaceous
Tylosaurus sp.
genus
6Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Tylosaurus93.9 - 83.6 Ma
Late/Upper Cretaceous
Tylosaurus kansasensis
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Tylosaurus : Tylosaurus kansasensis89.3 - 85.8 Ma
Late/Upper Cretaceous
Tylosaurus nepaeolicus
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Tylosaurus : Tylosaurus nepaeolicus89.3 - 83.5 Ma
Late/Upper Cretaceous
Macrosaurus proriger
species
7Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Tylosaurus : Macrosaurus proriger86.3 - 83.6 Ma
Late/Upper Cretaceous
Testudines
order
4Animalia : Chordata : Reptilia : Testudines93.5 - 89.3 Ma
Late/Upper Cretaceous
Ctenochelys stenoporus
species
7Animalia : Chordata : Reptilia : Testudines : Cheloniidae : Ctenochelys : Ctenochelys stenoporus89.3 - 83.5 Ma
Late/Upper Cretaceous
Toxochelys sp.
genus
6Animalia : Chordata : Reptilia : Testudines : Cynocercus : Toxochelys89.8 - 83.6 Ma
Late/Upper Cretaceous
Toxochelys elkader
species
7Animalia : Chordata : Reptilia : Testudines : Toxochelys : Toxochelys elkader85.8 - 70.6 Ma
Late/Upper Cretaceous
Toxochelys latiremis
species
7Animalia : Chordata : Reptilia : Testudines : Cheloniidae : Toxochelys : Toxochelys latiremis85.8 - 70.6 Ma
Late/Upper Cretaceous
Toxochelys procax
species
7Animalia : Chordata : Reptilia : Testudines : Toxochelys : Toxochelys procax89.8 - 83.6 Ma
Late/Upper Cretaceous
Prionochelys matutina
species
7Animalia : Chordata : Reptilia : Testudines : Toxochelyidae : Prionochelys : Prionochelys matutina93.9 - 83.6 Ma
Late/Upper Cretaceous
Microstega copei
species
7Animalia : Chordata : Reptilia : Testudines : Protostegidae : Microstega : Microstega copei85.8 - 70.6 Ma
Late/Upper Cretaceous
Protostega gigas
species
7Animalia : Chordata : Reptilia : Testudines : Protostegidae : Protostega : Protostega gigas89.3 - 70.6 Ma
Late/Upper Cretaceous
Lophochelys natatrix
species
7Animalia : Chordata : Reptilia : Testudines : Toxochelyidae : Lophochelys : Lophochelys natatrix89.8 - 83.6 Ma
Late/Upper Cretaceous
Lophochelys niobrarae
species
7Animalia : Chordata : Reptilia : Testudines : Toxochelyidae : Lophochelys : Lophochelys niobrarae89.8 - 83.6 Ma
Late/Upper Cretaceous
Toxochelyidae
family
5Animalia : Chordata : Reptilia : Testudines : Toxochelyidae85.8 - 70.6 Ma
Late/Upper Cretaceous
Theropoda
unranked clade
99Animalia : Chordata : Saurischia : Theropoda93.5 - 83.5 Ma
Late/Upper Cretaceous
Uintacrinus socialis
species
7Animalia : Echinodermata : Crinoidea : Uintacrinidae : Uintacrinus : Uintacrinus socialis89.8 - 83.6 Ma
Late/Upper Cretaceous
Durania sp.
genus
6Animalia : Mollusca : Bivalvia : Hippuritida : Radiolitidae : Durania86.3 - 83.6 Ma
Late/Upper Cretaceous
Cataceramus sp.
genus
6Animalia : Mollusca : Bivalvia : Cataceramus85.8 - 83.5 Ma
Late/Upper Cretaceous
Cladoceramus undulatoplicatus
species
7Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Cladoceramus : Cladoceramus undulatoplicatus85.8 - 83.5 Ma
Late/Upper Cretaceous
Cordiceramus cordiformis
species
7Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Inoceramus : Cordiceramus cordiformis85.8 - 83.5 Ma
Late/Upper Cretaceous
Cremnoceramus deformis
species
7Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Cremnoceramus : Cremnoceramus deformis93.5 - 89.3 Ma
Late/Upper Cretaceous
Inoceramus sp.
genus
6Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Inoceramus89.3 - 85.8 Ma
Late/Upper Cretaceous
Inoceramus (Cordiceramus) sp.
subgenus
6.3Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Inoceramus : Inoceramus (Cordiceramus)85.8 - 83.5 Ma
Late/Upper Cretaceous
Inoceramus (Sphenoceramus) sp.
subgenus
6.3Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Inoceramus : Inoceramus (Sphenoceramus)85.8 - 83.5 Ma
Late/Upper Cretaceous
Inoceramus anomalus
species
7Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Inoceramus : Inoceramus anomalus89.3 - 85.8 Ma
Late/Upper Cretaceous
Magadiceramus sp.
genus
6Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Magadiceramus89.3 - 85.8 Ma
Late/Upper Cretaceous
Magadiceramus subquadratus
species
7Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Magadiceramus : Magadiceramus subquadratus89.3 - 85.8 Ma
Late/Upper Cretaceous
Platyceramus sp.
genus
6Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Platyceramus85.8 - 83.5 Ma
Late/Upper Cretaceous
Platyceramus cycloides
species
7Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Platyceramus : Platyceramus cycloides85.8 - 83.5 Ma
Late/Upper Cretaceous
Platyceramus platinus
species
7Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Platyceramus : Platyceramus platinus86.3 - 83.6 Ma
Late/Upper Cretaceous
Volviceramus sp.
genus
6Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Volviceramus86.3 - 83.6 Ma
Late/Upper Cretaceous
Volviceramus involutus
species
7Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Volviceramus : Volviceramus involutus89.3 - 85.8 Ma
Late/Upper Cretaceous
Pseudoperna sp.
genus
6Animalia : Mollusca : Bivalvia : Ostreida : Ostreidae : Pseudoperna89.3 - 85.8 Ma
Late/Upper Cretaceous
Baculites sp.
genus
6Animalia : Mollusca : Cephalopoda : Ammonoidea : Baculitidae : Baculites86.3 - 83.6 Ma
Late/Upper Cretaceous
Clioscaphites sp.
genus
6Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Clioscaphites85.8 - 83.5 Ma
Late/Upper Cretaceous
Clioscaphites saxitonianus
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Clioscaphites : Clioscaphites saxitonianus85.8 - 83.5 Ma
Late/Upper Cretaceous
Clioscaphites vermiformis
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Clioscaphites : Clioscaphites vermiformis85.8 - 83.5 Ma
Late/Upper Cretaceous
Scaphites depressus
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Scaphites : Scaphites depressus89.3 - 85.8 Ma
Late/Upper Cretaceous

References

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Martin L. D. (1984) A new hesperornithid and the relationships of the Mesozoic birds, Transactions of the Kansas Academy of Science 87 3/4, 141-150
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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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