Lead Slug Hill 1 (Cretaceous of the United States)

Also known as UCMP V-72208

Where: Garfield County, Montana (47.1° N, 106.9° W: paleocoordinates 54.4° N, 80.0° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Hell Creek Formation, Lancian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; silty sandstone

Size class: mesofossils

Reposited in the UCMP

Collection methods: bulk, surface (float), sieve,

Primary reference: J. D. Archibald. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. University of California Publications in Geological Sciences 122:1-286 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14582: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Elasmobranchii -
? Elasmobranchii indet.3 Bonaparte 1838 elasmobranch
 Hybodontiformes - Lonchidiidae
Lonchidion selachos3 Estes 1964 elasmobranch
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus3 Cope 1876 whiptail stingray
 Orectolobiformes - Orectolobidae
Squatirhina americana3 Estes 1964 wobbegong
Gnathostomata
  -
Actinopteri
 Acipenseriformes - Acipenseridae
Acipenser eruciferus3 Cope 1876 sturgeon
 Acanthomorphata - Sciaenidae
Platacodon nanus3 Marsh 1889
 Amiiformes - Amiidae
Amia sp.3 Linnaeus 1766 bowfin
Amia fragosa3 Jordan 1927 bowfin
Amia uintaensis3 Leidy 1873 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.3 Agassiz 1843 gar
Lepisosteus occidentalis3 Leidy 1856 gar
Osteichthyes
 Proteida - Batrachosauroididae
Opisthotriton kayi3 Auffenberg 1961 salamander
 Caudata - Urodela
Urodela indet.3 salamander
Scapherpeton tectum3 Cope 1876 salamander
Reptilia
  -
Reptilia indet.3 Laurenti 1768 reptile
 Testudines - Macrobaenidae
"Clemmys backmani" = Judithemys backmani3
"Clemmys backmani" = Judithemys backmani3 Russell 1934 turtle
 Testudines - Trionychidae
Trionychidae indet.3 Gray 1825 softshell turtle
 Testudines - Baenidae
Palatobaena bairdi3 Gaffney 1972 turtle
 Testudines -
Cryptodira indet.3 Cope 1868 turtle
 Testudines - Panchelydridae
 Sauria -
Sauria indet.3 diapsid
 Theropoda -
Theropoda indet.2 theropod
 Avetheropoda - Caenagnathidae
Chirostenotes sp.3 Gilmore 1924 coelurosaur
 Avetheropoda - Dromaeosauridae
? Dromaeosauridae indet.3 Colbert and Russell 1969 coelurosaur
Richardoestesia cf. gilmorei4 Currie et al. 1990 coelurosaur
UCMP 119921
Saurornitholestinae indet.4 Longrich and Currie 2009 coelurosaur
UCMP 187042–5
 Avetheropoda - Troodontidae
Troodontidae indet.3 Gilmore 1924 coelurosaur
Troodon sp.5 Leidy 1856 coelurosaur
UCMP 187057
 Avetheropoda -
Paronychodon lacustris3 Cope 1876 coelurosaur
Aves
  -
Aves indet.3 Linnaeus 1758 bird
Reptilia
 Avetheropoda - Tyrannosauridae
Tyrannosauridae indet.3 Osborn 1906 tyrannosaurid
 Avetheropoda - Coeluridae
Coeluridae indet.3 Marsh 1881 coelurid
 Ornithischia - Nodosauridae
Edmontonia sp.3 Sternberg 1928 ornithischian
 Neornithischia - Ceratopsidae
Ceratopsidae indet.3 Marsh 1888 ceratopsid
 Neornithischia - Thescelosauridae
Thescelosaurus sp.3 Gilmore 1913 ornithischian
 Neornithischia - Hadrosauridae
Hadrosauridae indet.3 Cope 1869 hadrosaurid
 Crocodylia -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3 Gilmore 1910 crocodilian
 Crocodylia - Crocodylidae
Crocodylidae indet.3 Cuvier 1807 crocodile
 Crocodylia - Alligatoridae
Brachychampsa montana3 Gilmore 1911 crocodilian
 Squamata -
Parasaniwa wyomingensis3 Gilmore 1928 squamates
 Choristodera -
Champsosaurus sp.3 Cope 1876 choristodere
Champsosaurus natator3 Parks 1933 choristodere
Mammalia
 Theriiformes - Peradectidae
"Pediomys hatcheri" = Aletridelphys hatcheri
"Pediomys hatcheri" = Aletridelphys hatcheri Osborn 1898 metatherian
 Didelphimorphia - Alphadontidae
Alphadon sp.1 Simpson 1927 marsupial
Turgidodon rhaister1 Clemens 1966 marsupial
 Didelphimorphia - Stagodontidae
Didelphodon vorax Marsh 1889 marsupial
 Multituberculata - Cimolomyidae
Cimolomys gracilis Marsh 1889 multituberculate
 Multituberculata - Neoplagiaulacidae
? Neoplagiaulacidae indet. Ameghino 1890 multituberculate
 Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889 multituberculate