Lane's Little Jaw Site: Late/Upper Maastrichtian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia
- Temnospondyli
- Albanerpetontidae
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Albanerpeton nexuosus
Estes 1981
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Reptilia
- Ceratopsidae
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cf. Triceratops sp.
Marsh 1889
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Reptilia
- Hadrosauridae
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cf. Edmontosaurus sp.
Lambe 1917
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Reptilia
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cf. Paronychodon sp.
Cope 1876
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Reptilia
- Troodontidae
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cf. Pectinodon sp.
Carpenter 1982
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Reptilia
- Dromaeosauridae
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cf. Saurornitholestes sp.
Sues 1978
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cf. Dromaeosaurus sp.
Matthew and Brown 1922
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cf. Richardoestesia isosceles
Sankey 2001
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Reptilia
- Tyrannosauridae
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Tyrannosaurus rex
Osborn 1905
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Reptilia
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Brachychampsa montanus
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cf. Borealosuchus sp.
Brochu 1997
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Champsosaurus sp.
Cope 1876
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Reptilia
- Testudines
- Trionychidae
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cf. Axestemys sp.
Hay 1899
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Mammalia
- Multituberculata
- Cimolomyidae
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Meniscoessus robustus
(Marsh 1889)
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Mammalia
- Multituberculata
- Neoplagiaulacidae
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Mesodma sp.
Jepsen 1940
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more than one species | ||||||||||
Mammalia
- Multituberculata
- Cimolodontidae
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? Cimolodon sp.
Marsh 1889
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Mammalia
- Cimolestidae
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Procerberus sp.
Sloan and Van Valen 1965
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(large | ||||||||||
? Procerberus sp.
Sloan and Van Valen 1965
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(small | ||||||||||
Cimolestes sp.
Marsh 1889
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Mammalia
- Procreodi
- Arctocyonidae
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Baioconodon cf. nordicus
(Jepsen 1930)
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Mammalia
- Periptychidae
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Paleoungulatum hooleyi n. gen., n. sp.
Kelly 2014
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Mammalia
- Stagodontidae
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cf. Eodelphis sp.
Matthew 1916
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Didelphodon vorax
Marsh 1889
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Mammalia
- Pediomyidae
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Protolambda mcgilli n. sp.
Kelly 2014
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Pediomys elegans
Marsh 1889
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? Leptalestes sp.
Davis 2007
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? Leptalestes cooki
(Clemens 1966)
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Mammalia
- Alphadontidae
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Turgidodon rhaister
(Clemens 1966)
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Mammalia
- Glasbiidae
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Glasbius twitchelli
Archibald 1982
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Actinopteri
- Albuliformes
- Albulidae
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Coriops amnicolus
Estes 1969
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Actinopteri
- Amiiformes
- Amiidae
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Amiidae indet.
Huxley 1861
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus sp.
Agassiz 1843
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Chondrichthyes
- Rajiformes
- Sclerorhynchidae
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Ischyrhiza sp.
Leidy 1856
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Chondrichthyes
- Rajiformes
- Rhinobatidae
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Myledaphus bipartitus
Cope 1876
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Chondrichthyes
- Orectolobiformes
- Orectolobidae
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Squatirhina americana
Estes 1964
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recombined as Restesia americana | ||||||||||
Chondrichthyes
- Orectolobiformes
- Brachaeluridae
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Brachaelurus estesi
(Herman 1977)
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Chondrichthyes
- Hybodontiformes
- Lonchidiidae
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Lonchidion selachos
Estes 1964
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see common names |
Geography
Country: | United States | State/province: | Montana | County: | Powder River |
Coordinates: | 45.7° North, 105.1° West (view map) | ||||
Paleocoordinates: | 52.1° North, 78.9° West | ||||
Basis of coordinate: | estimated from map |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
Key time interval: | Late/Upper Maastrichtian | ||
Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
Formation: | Hell Creek | ||||
Stratigraphy comments: upper Hell Creek Formation |
Lithology and environment
Primary lithology: | sandstone |
Secondary lithology: | claystone |
Lithology description: "The fossiliferous horizon at the quarry occurs in a distinctive layer along the base of the channel cut. This layer is characterized by yellowish-buff, fine-grained sandstone matrix with numerous rounded claystone clasts and occasional pebble clasts." | |
Environment: | fluvial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Reason for describing collection: | general faunal/floral analysis |
Museum repositories: | LACM |
Metadata
Also known as: | LLJS Quarry; LACM 7942 | ||
Database number: | 183109 | ||
Authorizer: | P. Holroyd | Enterer: | P. Holroyd |
Modifier: | G. Varnham | Research group: | vertebrate |
Created: | 2016-12-01 18:26:24 | Last modified: | 2022-02-01 07:39:23 |
Access level: | the public | Released: | 2016-12-01 18:26:24 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
61095. | T. S. Kelly. 2014. Preliminary report on the mammals form Lane's Little Jaw Site Quarry: a latest Cretaceous (earliest Puercan?) local fauna, Hell Creek Formation, southeastern Montana. Paludicola 10(1):50-91 [P. Holroyd/P. Holroyd] |