Where: Blaine County, Montana (47.8° N, 108.9° W: paleocoordinates 54.7° N, 75.0° W)
• coordinate based on nearby landmark
When: Judith River Formation, Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)
Environment/lithology: estuary or bay; sandstone
•ferruginous sandstone caprock overlying the secondary fish beds.The site is estuarine, swampy, with marine and fresh-water species and plesiosaur material.
Size classes: macrofossils, mesofossils
Primary reference: G. R. Case. 1978. A new selachian fauna from the Judith River Formation (Campanian) of Montana. Palaeontographica Abteilung A 160(Lfg. 1-6):176-205 [J. Kriwet/W. Glaeser/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 69153: authorized by Juergen Kriwet, entered by Wolfgang Glaeser on 20.02.2007, edited by Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
| Chondrichthyes | |
"Hybodus montanensis n. sp." = Meristodonoides montanensis
"Hybodus montanensis n. sp." = Meristodonoides montanensis Case 1978 elasmobranch | |
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Squalicorax kaupi Agassiz 1843 crow shark | |
Hypotodus grandis n. sp.
Hypotodus grandis n. sp. Case 1978 sand tiger shark | |
"Plicatolamna arcuata" = Archaeolamna kopingensis
"Plicatolamna arcuata" = Archaeolamna kopingensis Davis 1890 mackerel shark | |
Cretorectolobus olsoni n. gen. n. sp.
Cretorectolobus olsoni n. gen. n. sp. Case 1978 wobbegong | |
"Synechodus andersoni n. sp." = Paraorthacodus andersoni
"Synechodus andersoni n. sp." = Paraorthacodus andersoni Case 1978 elasmobranch | |
Ptychotrygon blainensis n. sp.
Ptychotrygon blainensis n. sp. Case 1978 ray | |
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Ischyrhiza mira Leidy 1856 ray | |
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Myledaphus bipartitus Cope 1876 guitarfish | |
Protoplatyrhina renae n. gen. n. sp.
Protoplatyrhina renae n. gen. n. sp. Case 1978 guitarfish | |
| Mammalia | |
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| Reptilia | |
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