[F] Judith River Wedge-J.R. Fm-Montana-US | Foremost-Oldman-Dinosaur Park-Canada
Judith River Wedge-J.R. Fm-Montana-US | Foremost-Oldman-Dinosaur Park-Alberta- Saskatchewan-Canada
The Judith River Wedge is exposed discontinuously in river drainages from central Alberta and west-central Saskatchewan (south of 54o) trough north and south-central Montana. It interfingers with eastward-thickening marine shales of the [Pakowki Formation], [Lea Park Formation]and [Claggett formation] Claggett Shale and Pierre Shale (below) and the Bearpaw Shale (above). In Canada the Judith River Wedge correlates westward with the Belly River Formation in the southern Foothills. North of approximately 54o latitude, the Judith River Wedge and Edmonton Group.
Clastic wedges become indistinguishable; there the combined Campanian-Maastrichtian wedge is referred to as the Waptiti Formation. In north-central Montana the Judith River Wedge correlates with some exeptions (according to Fiorillo, 1991 the Milk River near Havre, along Kennedy Coulee south of the international border, and in Wheatland County, Montana) with the Oldman Formation of southern Alberta.
The Judith River Wedge correlates westward in Montana with the Two Medicine Formation and farther south into Wyoming correlative nonmarine strata are included in the \\\\\\\"Mesaverde\\\\\\\" Formation. The Judith River Wedge comproses a variety of sediment and facies types that reflect a variety of sources, areas, depositional settings and climatic influences along the Western Interior seaway during the Campanian. Whitnin the three formations of the Judith River Wedge in Canada, the Foremost Formation, Oldman Formation and the Dinosaur Park Formation, dinosaur fossils are most abundant in the last one.
The Judith River Formation in Montana has yielded hundreds of vertebrate \\\\\\\"microfossil\\\\\\\" localities that consist of the disarticulated and concentrated physiochemical remains of vertebrates. In Canada the resource industry refer to the entire wedge as Belly River Group. Outcrop geologists and paleontologist prefer the terms Judith River Group, Judith River Formation and Oldman Formation for fossiliferous exposures in the southern Alberta plains.
Albertosaurus incrassatus - Alberta - Tyrannosaurinae Albertosaurini - Cretaceous Late Campanian
Albertosaurus libratus - Alberta, Montana - Tyrannosaurinae Albertosaurini - Cretaceous Late Campanian Maastrichtian
Albertosaurus sarcophagus - Alberta, Montana - Tyrannosaurinae Albertosaurini - Cretaceous Late Campanian Maastrichtian
Anchiceratops ornatus - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Campanian Maastrichtian
Aublysodon explanatus - Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian
Aublysodon lateralis - Montana - ?Carnosauria Nomina Dubia - Cretaceous Late Campanian
Aublysodon mirandus - Montana - Tyrannosauria Tyrannosauridae - Cretaceous Late Campanian Maastrichtian
Avaceratops lammersi - Montana - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Brachylophosaurus canadensis - Alberta - Hadrosaurinae Maiasaurini [Brachylophosaurs] - Campanian Cretaceous Late
Brachylophosaurus goodwini - Montana - Maiasaurini [Brachylophosaurs] - Cretaceous Late Campanian
Caenagnathus collinsi - Alberta - Oviraptorosauria Caenagnathidae - Cretaceous Late Campanian
Caenagnathus sternbergi - Alberta - Oviraptorosauria Caenagnathidae - Cretaceous Late Campanian
Centrosaurus apertus ( including [Centrosaurus lexus], [Centrosaurus cutleri], Centrosaurus longirostris, Monoclonius dawsoni) - Alberta - Centrosaurinae Incertae Sedis - Cretaceous Late Campanian
Centrosaurus brinkmani - Alberta - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Centrosaurus longirostris - Alberta - Ceratopidae Centrosaurinae - Campanian Cretaceous Late
Ceratops montanus - Montana - Neoceratopia Nomina Dubia - Cretaceous Late Campanian
Chasmosaurus brevirostris - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Maastrichtian
Chasmosaurus canadensis (including Chasmosaurus kaiseni) - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Maastrichtian
Chasmosaurus irvinensis - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Campanian
Chasmosaurus kaiseni - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Maastrichtian
Chasmosaurus russelli - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Maastrichtian
Chirostenotes pergracilis (= Macrophalangia canadensis) - Alberta - Oviraptorosauria Caenagnathidae -Cretaceous Late Campanian Maastrichtian
Cionodon stenopsis - Alberta - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Corythosaurus bicristatus - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late
Corythosaurus brevicristatus - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late
Corythosaurus casuarius - Alberta, Montana - Hadrosauridae Lambeosaurinae - Cretaceous Late Campanian
Corythosaurus frontalis - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late
Corythosaurus intermedius - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late
Daspletosaurus torosus - Alberta, Montana - Tyrannosauria Tyrannosauridae - Cretaceous Late Campanian
?Deinodon - Montana - Tyrannosaurinae Albertosaurini - Cretaceous Late Campanian
Deinodon explanatus - Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian
Deinodon horridus ? - Montana - Tyrannosaurinae Albertosaurini - Cretaceous Late Campanian
Diclonius calamarius - Montana - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Diclonius pentagonus - Montana - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Diclonius perangulatus - Montana - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Dromaeosaurus albertensis - Alberta, Montana - Coelurosauria Dromaeosauridae - Cretaceous Late Campanian
Dromaeosaurus explanatus - Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian
Dromiceiomimus samueli - Alberta - Ornithomimosauria Ornithomimidae - Cretaceous Late Campanian
Dryptosaurus explanatus - Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian
Dryptosaurus kenabekides ? - Montana - Albertosaurini Nomina Dubia - Cretaceous Late Campanian
Dyoplosaurus acutosquameus - Alberta - Ankylosauria Ankylosauridae - Cretaceous Late
Dysganus bicarinatus - Montana - Neoceratopia Nomina Dubia - Cretaceous Late Campanian
Dysganus encaustus (1) - Montana - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Dysganus encaustus (2) - Montana - Neoceratopia Nomina Dubia - Cretaceous Late Campanian
Dysganus haydenianus - Montana - Neoceratopia Nomina Dubia - Cretaceous Late Campanian
Dysganus peiganus - Montana - Neoceratopia Nomina Dubia - Cretaceous Late Campanian
Edmontonia longiceps - Alberta, Montana - Ankylosauria Nodosauridae - Campanian Maastrichtian
Edmontonia rugosidens - Alberta, Montana - Ankylosauria Nodosauridae - Cretaceous Late Campanian
Elmisaurus elegans (= Ornithomimus elegans) - Alberta - Oviraptorosauria Caenagnathidae - Cretaceous Late Campanian Maastrichtian
Euoplocephalus tutus - Alberta, Montana - Ankylosauria Ankylosauridae - Cretaceous Late Campanian Maastrichtian
Gorgosaurus libratus - Alberta, Montana - Tyrannosaurinae Albertosaurini - Cretaceous Late Campanian Maastrichtian
Gravitholus albertae - Alberta - Pachycephalosauridae Nomina Dubia - Cretaceous Late Campanian
Gryposaurus incurvimanus - Alberta - Hadrosaurinae Gryposaurini - Cretaceous Late Campanian
Gryposaurus notabilis - Alberta - Hadrosaurinae Gryposaurini - Cretaceous Late Campanian
Hesperonychus elizabethae - Dromaeosauridae [Microraptorinae] - Cretaceous Late Campanian
Hesperornis regalis ~/~ - Manitoba - Ornithurae [Hesperonithiformes] - Cretaceous Late Coniacian Santonian Campanian Maastrichtian
Hypacrosaurus stebingeri - Alberta, Montana - Hadrosauridae Lambeosaurinae - Cretaceous Late Campanian
\\\\\\\"Kritosaurus incurvimanus\\\\\\\" - Alberta - Hadrosaurinae Gryposaurini - Cretaceous Late Campanian
Laelaps explanatus - Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian
Laelaps incrassatus - Alberta - Tyrannosaurinae Albertosaurini - Cretaceous Late Campanian
Laelaps laevifrons - Montana - \\\\\\\"Carnosaurs\\\\\\\" Nomina Dubia - Cretaceous Late Campanian
Lambeosaurus lambei - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late Campanian
Lambeosaurus magnicristatus - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late Campanian
Macrophalangia canadensis - Alberta - Oviraptorosauria Caenagnathidae - Cretaceous Late Campanian Maastrichtian
Microcephale - Alberta - Pachycephalosauria Nomen Nudem
Mojoceratops perifania - Ceratopidae Chasmosaurinae - Cretaceous Late Campanian
Monoclonius belli - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Maastrichtian
Monoclonius canadensis - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Maastrichtian
Monoclonius crassus - Alberta, Montana - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Monoclonius cutleri - Alberta - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Monoclonius dawsoni - Alberta - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Monoclonius fissus - Montana - Neoceratopia Nomina Dubia - Cretaceous Late Campanian
Monoclonius flexus - Alberta - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Monoclonius lowei - Alberta - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Monoclonius nasicornus - Alberta - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Monoclonius recurvicornis - Montana - Neoceratopia Nomina Dubia - Cretaceous Late Campanian
Monoclonius sphenocerus - Montana - Neoceratopia Nomina Dubia - Cretaceous Late Campanian
NN (2) Lambeosaurinae - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late Campanian
Ornatotholus browni - Alberta - Pachycephalosauria Pachycephalosauridae - Cretaceous Late Campanian
Ornithomimus altus - Alberta - Ornithomimosauria Ornithomimidae - Cretaceous Late Campanian Maastrichtian
Ornithomimus edmontonensis - Alberta - Ornithomimosauria Ornithomimidae - Cretaceous Late Campanian Maastrichtian
Ornithomimus elegans - Alberta - Oviraptorosauria Caenagnathidae - Cretaceous Late Campanian
Ornithomimus tenuis - Montana - Ornithomimosauria Nomina Dubia - Cmpanian Cretaceous Late
Pachycephalosaurus reinheimeri - Montana - Pachycephalosauria Pachycephalosauridae - Cretaceous Late Campanian
Pachycephalosaurus wyomingensis - Montana - Pachycephalosauria Pachycephalosauridae - Cretaceous Late Maastrichtian
Palaeoscincus rugosidens - Alberta, Montana - Ankylosauria Nodosauridae - Cretaceous Late Campanian
Panoplosaurus mirus - Alberta - Ankylosauria Nodosauridae - Cretaceous Late Campanian
Parasaurolophus walkeri - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late Campanian
Paronychodon explanatus ? - Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian
Paronychodon lacustris - Alberta, Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian Maastrichtian
Pectinodon bakkeri - Alberta - Coelurosauria Troodontidae - Cretaceous Late Campanian Maastrichtian
Prosaurolophus maximus - Alberta, ?Montana - Gryposaurini Saurolophini - Cretaceous Late Campanian
Protorosaurus belli - Alberta - Ceratopidae Chasmosaurinae - Cretaceous Late Maastrichtian
Pteropelyx grallipes - Alberta - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Ricardoestesia gilmorei - Alberta - Tetanurae Coelurosauria - Cretaceous Late Campanian
Ricardoestesia isosceles - Alberta - Tetanurae Coelurosauria - Cretaceous Late Campanian
Saurornitholestes langstoni - Alberta - Coelurosauria Dromaeosauridae - Cretaceous Late Campanian
Spinops sternbergorum - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
[Oldman Formation? - Dinosaur Park Formation?]
Stegoceras breve - Alberta - Pachycephalosauria Pachycephalosauridae - Cretaceous Late Campanian
Stegoceras browni - Alberta - Pachycephalosauria Pachycephalosauridae - Cretaceous Late Campanian
Stegoceras validum - Alberta, Montana - Pachycephalosauria Pachycephalosauridae - Cretaceous Late Campanian
Stenonychosaurus inequalis - Alberta - Maniraptora Troodontidae - Cretaceous Late Campanian Maastrichtian
Struthiomimus altus - Alberta - Ornithomimosauria Ornithomimidae - Cretaceous Late Campanian Maastrichtian
Struthiomimus samueli - Alberta - Ornithomimosauria Ornithomimidae - Cretaceous Late
Styracosaurus albertensis - Alberta - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Styracosaurus parksi - Alberta - Ceratopidae Centrosaurinae - Cretaceous Late Campanian
Tetragonosaurus erectofrons - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late
Tetragonosaurus praeceps - Alberta - Hadrosauridae Lambeosaurinae - Cretaceous Late
Thescelosaurus neglectus - Montana - Ornithopoda Hypsilophodontidae - Cretaceous Late Campanian Maastrichtian
Trachodon altidens - Alberta - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Trachodon marginatus - Alberta - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Trachodon mirabilis - Alberta - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Trachodon selwyni - Alberta - Hadrosauridae Nomina Dubia - Cretaceous Late Campanian
Troodon formosus - Alberta, Montana - Maniraptora Troodontidae - Cretaceous Late Campanian Maastrichtian
Unescoceratops koppelhusae - Neoceratopia [Leptoceratopsidae] - Cretaceous Late Campanian
Xenoceratops foremostensis - Neoceratopia Ceratopidae - Cretaceous Late Campanian
Vagaceratops irvinensis - Ceratopidae Chasmosaurinae - Cretaceous Late Campanian
Zaphsalis abradus [sic] - Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian
Zaphsalis abradus - Montana - Troodontidae Nomina Dubia - Cretaceous Late Campanian
Ornithopod footprints - Alberta - Ornithopoda - Campanian Cretaceous Late
? Chirostenotes sp. - Alberta - Theropoda Elmisauridae - Campanian Cretaceous Late
? Dromaeosaurid indet. - Alberta - Theropoda Dromaeosauridae - Campanian Cretaceous Late
Maiasaurua sp. - Alberta - Ornithopoda Hadrosauridae - Campanian Cretaceous Late
Aublysodon sp.- Alberta - Theropoda ? Carnosauria - Campanian Cretaceous Late
Centrosaurus sp. - Alberta - Ceratopia Ceratopidae - Campanian Cretaceous Late
Ceratopsid indet. ( = ? Ceratops sp. ) - Alberta - Ceratopia Ceratopidae - Campanian Cretaceous Late
cf. Erlikosaurus sp. - Alberta - Therizinosauroidea - Campanian Cretaceous Late
Chasmosaurus sp. - Alberta - Ceratopia Ceratopidae - Campanian Cretaceous Late
Monoclonius sp. - Alberta - Ceratopia Ceratopidae - Campanian Cretaceous Late
Nodosauris indet. ( = Palaeoscincus costatus ) - Alberta - Ankylosauria Nodosauridae - Campanian Cretaceous Late
Ornithomimid indet. - Alberta - Theropoda Ornithomimidae - Campanian Cretaceous Late
Pachycephalosaurus sp. - Alberta - Pachycephalosauria Pachycephalosauridae - Campanian Cretaceous Late
Panoplosaurus sp. - Alberta - Ankylosauria Nodosauridae - Campanian Cretaceous Late
Cf Parasaurolophus sp. - Hadrosauridae Lambeosauridae - Campanian Cretaceous Late
[CMN 52845 a large incomplete and articulated hadrosaurid braincas - Dinosaur Park Formation]
Troodon sp. - Alberta - Theropoda Troodontidae - Campanian Cretaceous Late
Tyrannosaurid indet. - Alberta -Theropoda Tyrannosauridae - Campanian Cretaceous Late
Undescribed lambeosaurine - Alberta - Ornithopoda Hadrosauridae - Campanian Cretaceous Late
Undescribed pachycephalosaurid- Alberta - Pachycephalosauria Pachycephalosauridae - Campanian Cretaceous Late
Undescribed tyrannosaurid - Alberta - Theropoda Tyrannosauridae - Campanian Cretaceous Late
Dinosaur eggshell - Montana - Dinosauria - Campanian Cretaceous Late
Ankylosauria indet. (= Palaeoscincus costatus) - Montana - Ankylosauria - Campanian Cretaceous Late
Ceratopsid indet. (= Monoclonius recuvicornis, Monoclonius sphenocerus, Monoclonius fissus, Ceratops montanus, Dysganus peiganus, Dysganus bicarinatus, Dysganus encaustus partim, Dysganus haydenianus) - Montana - Ceratopia Ceratopidae - Campanian Cretaceous Late
Hadrosaurid indet. (= Dysganus encaustus, Diclonius pentagonus, Diclonius calamarius, Diclonius perangulatus, Hadrosaurus breviceps, Hadrosaurus paucidens) - Montana - Ornithopoda Hadrosauridae - Campanian Cretaceous Late
Ornithischia indet. - Montana - Ornithischia - Campanian Cretaceous Late
Ornithomimid indet. (= Ornithomimus tenuis) - Montana - Theropoda Ornithomimidae - Campanian Cretaceous Late
Ornithomimus sp. - Montana - Theropoda Ornithomimidae - Campanian Cretaceous Late
Stegoceras sp. - Montana - Pachycephalosauria Pachycephalosauridae - Campanian Cretaceous Late
Theropoda indet. (= Laelaps explanatus Laelaps laevifrons Aublysodon lateralis) - Montana - Theropoda - Campanian Cretaceous Late
Troodon indet. (= Paronychodon lacustris, Zapsalis abradens) - Montana - Theropoda Troodontidae - Campanian Cretaceous Late
Undescribed ceratopsid - Montana - Ceratopia Ceratopidae - Campanian Cretaceous Late
? Albertosaurus sp. - Saskatchewan - Theropoda Tyrannosauridae - Campanian Cretaceous Late
cf. Chirostenotes sp. (= cf. Macrophalangia sp.) - Saskatchewan - Theropoda Elmisauridae - Campanian Cretaceous Late
Dromaeosaurus sp. (? 2 species) - Saskatchewan - Theropoda Dromaeosauridae - Campanian Cretaceous Late
Hadrosaurine indet. - Saskatchewan - Ornithopoda Hadrosauridae - Campanian Cretaceous Late
Lambeosaurine indet. - Saskatchewan - Ornithopoda Hadrosauridae - Campanian Cretaceous Late
Ornithomimid indet. - Saskatchewan - Theropoda - Campanian Cretaceous Late
Saurornitholestes sp. - Saskatchewan - Theropoda Dromaeosauridae - Campanian Cretaceous Late
Undescribed ceratopsid - Saskatchewan - Ceratopia - Campanian Cretaceous Late