PTRM V86002, East Marmarth (Cretaceous of the United States)

Where: Slope County, North Dakota (46.3° N, 103.9° W: paleocoordinates 52.7° N, 76.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

• datum -29.18, K-T section 86148

• bed-level stratigraphic resolution

Environment/lithology: "channel"; sandstone

Size classes: macrofossils, mesofossils

Primary reference: D. A. Pearson, T. Schaefer, K. R. Johnson, D. J. Nichols, and J. P. Hunter. 2002. Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota. In J. H. Hartman, J. R. Johnson, and D. J. Nichols (eds.), The Hell Creek Formation and the Cretaceous-Tertiary Boundary in the Northern Great Plains: An Integrated Continental Record of the End of the Cretaceous, Geological Society of America Special Paper 361:145-167 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45144: authorized by Matthew Carrano, entered by Matthew Carrano on 07.10.2004, edited by Patricia Holroyd and Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes - Lonchidiidae
"Lissodus selachos" = Lonchidion selachos
"Lissodus selachos" = Lonchidion selachos Estes 1964 elasmobranch
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray
 Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964 wobbegong
Actinopteri
 Acipenseriformes - Acipenseridae
cf. Acipenser sp. Linnaeus 1758 sturgeon
 Teleostei -
Teleostei indet. Müller 1846
 Teleostei - Aspidorhynchidae
 Amiiformes - Amiidae
Melvius thomasi, "Kindleia fragosa" = Cyclurus fragosus
Melvius thomasi Bryant 1987 bowfin
"Kindleia fragosa" = Cyclurus fragosus Jordan 1927 bowfin
 Lepisosteiformes - Lepisosteidae
Osteichthyes
 Tetrapoda -
? Tetrapoda indet.1 Jaekel 1911 tetrapod
 Caudata -
Caudata indet. salamander
 Proteida - Batrachosauroididae
Prodesmodon copei2 Estes 1964 salamander
Opisthotriton kayi Auffenberg 1961 salamander
 Caudata - Urodela
Proamphiuma cretacea2 Estes 1969 salamander
Habrosaurus dilatus Gilmore 1928 siren
Scapherpeton tectum Cope 1876 salamander
Reptilia
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle
 Testudines -
Compsemys victa Leidy 1856 turtle
 Testudines - Baenidae
Baenidae indet. Cope 1882 turtle
Plesiobaena antiqua Lambe 1902 turtle
 Testudines - Kinosternidae
"Kinosternidae indet." = Kinosternoidea
"Kinosternidae indet." = Kinosternoidea Hay 1892 mud turtle
 Testudines - Nanhsiungchelyidae
Basilemys sinuosa Riggs 1906 turtle
 Testudines - Adocidae
Adocus sp. Cope 1868 turtle
 Testudines - Pantrionychidae
Helopanoplia distincta Hay 1908 turtle
 Testudines - Panchelydridae
 Avetheropoda - Dromaeosauridae
Richardoestesia isosceles Sankey 2001 coelurosaur
 Avetheropoda -
Paronychodon lacustris Cope 1876 coelurosaur
Aves
  -
Aves indet. Linnaeus 1758 bird
 Ornithurae -
Hesperornithiformes indet. Fürbringer 1888 bird
Reptilia
 Avetheropoda - Tyrannosauridae
Tyrannosaurus rex Osborn 1905 tyrant lizard king
 Neornithischia - Ceratopsidae
Ceratopsidae indet. Marsh 1888 ceratopsid
 Neornithischia - Thescelosauridae
Thescelosaurus neglectus Gilmore 1913 ornithischian
 Neornithischia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918 hadrosaurine
 Crocodylia -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian
Brachychampsa montana Gilmore 1911 crocodilian
Thoracosaurus neocesariensis De Kay 1842 crocodilian
 Eosuchia -
Lepidosauria indet. Haeckel 1866 lepidosaur
 Choristodera -
Champsosaurus sp. Cope 1876 choristodere
Mammalia
 Creodonta -
"Cimolestes magnus" = Altacreodus magnus
"Cimolestes magnus" = Altacreodus magnus Clemens and Russell 1965 creodont
 Theriiformes -
Theria indet. Parker and Haswell 1897 mammal
 Multituberculata - Cimolomyidae
Meniscoessus sp. Cope 1882 multituberculate
 Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889 multituberculate