Lane's Little Jaw Site: Late/Upper Maastrichtian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Pediomyidae
Protolambda mcgilli n. sp. Kelly 2014
? Leptalestes sp. Davis 2007
? Leptalestes cooki (Clemens 1966)
Pediomys elegans Marsh 1889
Mammalia - Stagodontidae
cf. Eodelphis sp. Matthew 1916
Didelphodon vorax Marsh 1889
Mammalia - Glasbiidae
Glasbius twitchelli Archibald 1982
Mammalia - Alphadontidae
Turgidodon rhaister (Clemens 1966)
Mammalia - Cimolestidae
Cimolestes sp. Marsh 1889
Procerberus sp. Sloan and Van Valen 1965
(large
? Procerberus sp. Sloan and Van Valen 1965
(small
Mammalia - Periptychidae
Paleoungulatum hooleyi n. gen., n. sp. Kelly 2014
Mammalia - Procreodi - Arctocyonidae
Baioconodon cf. nordicus (Jepsen 1930)
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma sp. Jepsen 1940
more than one species
Mammalia - Multituberculata - Cimolodontidae
? Cimolodon sp. Marsh 1889
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus robustus (Marsh 1889)
Reptilia - Testudines - Trionychidae
cf. Axestemys sp. Hay 1899
Reptilia
cf. Borealosuchus sp. Brochu 1997
Brachychampsa montanus
Reptilia - Ceratopsidae
cf. Triceratops sp. Marsh 1889
Reptilia - Hadrosauridae
cf. Edmontosaurus sp. Lambe 1917
Reptilia
cf. Paronychodon sp. Cope 1876
Reptilia - Troodontidae
cf. Pectinodon sp. Carpenter 1982
Reptilia - Dromaeosauridae
cf. Richardoestesia isosceles Sankey 2001
cf. Dromaeosaurus sp. Matthew and Brown 1922
cf. Saurornitholestes sp. Sues 1978
Reptilia - Tyrannosauridae
Tyrannosaurus rex Osborn 1905
Reptilia
Champsosaurus sp. Cope 1876
Amphibia - Temnospondyli - Albanerpetontidae
Albanerpeton nexuosus Estes 1981
Actinopteri - Amiiformes - Amiidae
Amiidae indet. Huxley 1861
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
Actinopteri - Albuliformes - Albulidae
Coriops amnicolus Estes 1969
Chondrichthyes - Rajiformes - Sclerorhynchidae
Ischyrhiza sp. Leidy 1856
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Chondrichthyes - Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964
recombined as Restesia americana
Chondrichthyes - Orectolobiformes - Brachaeluridae
Brachaelurus estesi (Herman 1977)
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964
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]