Flat Creek 5 (Cretaceous of the United States)

Also known as UCMP V-73087

Where: Garfield County, Montana (47.5° N, 106.4° W: paleocoordinates 54.2° N, 79.5° 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• coordinate based on unpublished field data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 14549: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Matthew Carrano and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• this appears to actually post-date Archibald and Clemens 1984, so their "Flat Creek" list should be ignoredupper level of Flat Creek sectionNISP 217 (minimum; maximum 222)
Chondrichthyes
 Sclerorhynchiformes - Sclerorhynchidae
Onchosaurus avonicolus5 cartilaginous fish
 Hybodontiformes - Lonchidiidae
Lonchidion selachos5 Estes 1964 elasmobranch
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus5 Cope 1876 whiptail stingray
 Orectolobiformes -
Brachaelurus estesi5 carpet shark
 Orectolobiformes - Orectolobidae
Squatirhina sp.5 Casier 1947 wobbegong
Squatirhina americana5 Estes 1964 wobbegong
Actinopteri
 Acipenseriformes - Acipenseridae
Acipenser sp.5 Linnaeus 1758 sturgeon
 Teleostei - Aspidorhynchidae
 Acanthomorphata - Sciaenidae
Platacodon nanus5 Marsh 1889
 Osteoglossiformes -
Wilsonichthys sp.9 Murray et al. 2016
 Amiiformes - Amiidae
Melvius thomasi5 Bryant 1987 bowfin
Amia fragosa5 Jordan 1927 bowfin
Amia uintaensis5 Leidy 1873 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.5 de Lacepède 1803 gar
Lepisosteus occidentalis5 Leidy 1856 gar
Osteichthyes
 Temnospondyli - Albanerpetontidae
Albanerpetontidae indet.6 Fox and Naylor 1982 tetrapod
 Proteida - Batrachosauroididae
Opisthotriton kayi5 Auffenberg 1961 tetrapod
 Salientia -
Scotiophryne sp.5 Estes 1969 frog
 Caudata - Urodela
Habrosaurus sp.5 Gilmore 1928 siren
Habrosaurus dilatus5 Gilmore 1928 siren
Scapherpeton tectum5 Cope 1876 salamander
Lisserpeton bairdi5 Estes 1965 salamander
Reptilia
 Testudines - Trionychidae
Trionychidae indet.2 Gray 1825 softshell turtle
 Testudines - Compsemydidae
Compsemys victa5 Leidy 1856 turtle
 Testudines - Adocidae
Adocus sp.5 Cope 1868 turtle
 Theropoda -
 Avetheropoda - Dromaeosauridae
Dromaeosauridae indet.4 Colbert and Russell 1969 coelurosaur
Richardoestesia sp.5 Currie et al. 1990 coelurosaur
Richardoestesia cf. isosceles11 Sankey 2001 coelurosaur
UCMP 213922–214006
Richardoestesia cf. gilmorei8 Currie et al. 1990 coelurosaur
UCMP 187163
Saurornitholestinae indet.8 Longrich and Currie 2009 coelurosaur
UCMP 124987, 187041
 Avetheropoda - Troodontidae
cf. Pectinodon sp.8 Carpenter 1982 coelurosaur
UCMP 186885, 214060
 Avetheropoda -
Paronychodon sp.5 Cope 1876 coelurosaur
Paronychodon lacustris4 Cope 1876 coelurosaur
cf. Paronychodon lacustris11 Cope 1876 coelurosaur
UCMP 187159, 123342, 187156, 187162, 1871464
Aves
  -
Aves indet.11 Linnaeus 1758 bird
UCMP 186826, 214056-58
Reptilia
 Avetheropoda -
Aublysodon mirandus4 Leidy 1868 coelurosaur
 Neornithischia - Thescelosauridae
Thescelosaurus sp.5 Gilmore 1913 ornithischian
 Neornithischia - Hadrosauridae
"Anatosaurus sp." = Edmontosaurus5
"Anatosaurus sp." = Edmontosaurus5 Lambe 1917 hadrosaurine
 Loricata -
Crocodylia indet.3 crocodilian
 Crocodylia -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii5
"Leidyosuchus sternbergi" = Borealosuchus sternbergii5 Gilmore 1910 crocodilian
 Crocodylia - Alligatoridae
Brachychampsa sp.5 Gilmore 1911 crocodilian
Brachychampsa montana5 Gilmore 1911 crocodilian
 Squamata - Xenosauridae
Exostinus sp.5 Cope 1873 lizard
Exostinus lancensis5 Gilmore 1928 lizard
 Squamata - Anguidae
Odaxosaurus piger5 Gilmore 1928 lizard
 Squamata - Globauridae
Contogenys sloani5 Estes 1969 lizard
UCMP 130732
 Squamata - Chamopsiidae
Haptosphenus placodon5 Estes 1964 lizard
Leptochamops denticulatus5 Gilmore 1928 lizard
Chamops segnis5 Marsh 1892 lizard
Peneteius aquilonius10 Estes 1969 lizard
teiid lizard; UCMP 123325 9left maxilla), 124744 (right dentary)
 Choristodera -
Champsosaurus sp.5 Cope 1876 choristodere
Champsosaurus natator5 Parks 1933 choristodere
Mammalia
 Cimolesta - Cimolestidae
Batodon tenuis Marsh 1892 eutherian
Cimolestes incisus Marsh 1889 eutherian
Cimolestes stirtoni Clemens 1973 eutherian
 Leptictida - Gypsonictopidae
Gypsonictops cf. illuminatus Lillegraven 1969 eutherian
 Tribosphenida -
"Cimolestes propalaeoryctes" = Scollardius propalaeoryctes
"Cimolestes propalaeoryctes" = Scollardius propalaeoryctes Lillegraven 1969 eutherian
 Theriiformes -
Protalphadon foxi n. sp.7 Johanson 1996 metatherian
 Theriiformes - Peradectidae
Pediomys elegans, "Pediomys hatcheri" = Aletridelphys hatcheri, "Pediomys florencae" = Aletridelphys florencae, "Pediomys krejcii" = Leptalestes krejcii, "Pediomys cf. cooki" = Leptalestes cooki
Pediomys elegans Marsh 1889 metatherian
"Pediomys hatcheri" = Aletridelphys hatcheri Osborn 1898 metatherian
"Pediomys florencae" = Aletridelphys florencae Clemens 1966 metatherian
"Pediomys krejcii" = Leptalestes krejcii Clemens 1966 metatherian
"Pediomys cf. cooki" = Leptalestes cooki Clemens 1966 metatherian
 Theriiformes - Herpetotheriidae
"Alphadon jasoni" = Nortedelphys jasoni7
"Alphadon jasoni" = Nortedelphys jasoni7 Storer 1991 marsupial
most of the A. marshi/wilsoni sample
 Didelphimorphia - Alphadontidae
Alphadon marshi Simpson 1927 marsupial
includes "A. wilsoni": (32 + 23)
Turgidodon rhaister1 Clemens 1966 marsupial
 Didelphimorphia - Glasbiidae
Glasbius twitchelli n. sp. Archibald 1982 marsupial
 Didelphimorphia - Stagodontidae
Didelphodon vorax Marsh 1889 marsupial
(minimum; maximum 6)
 Multituberculata -
Paracimexomys priscus Lillegraven 1969 multituberculate
 Multituberculata - Cimolomyidae
Meniscoessus robustus Marsh 1889 multituberculate
Essonodon browni Simpson 1927 multituberculate
Cimolomys gracilis Marsh 1889 multituberculate
 Multituberculata - Neoplagiaulacidae
Mesodma hensleighi Lillegraven 1969 multituberculate
Mesodma thompsoni Clemens 1964 multituberculate
Mesodma cf. formosa Marsh 1889 multituberculate
? Neoplagiaulax burgessi n. sp. Archibald 1982 multituberculate
 Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889 multituberculate