PTRM V88004, Mud Buttes (Cretaceous of the United States)

Where: Bowman County, North Dakota (46.0° N, 103.8° W: paleocoordinates 52.2° N, 77.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• datum -10.61, K-T section 9906

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; silty mudstone

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 45118: authorized by Matthew Carrano, entered by Matthew Carrano on 06.10.2004, edited by Roger Benson

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Lepisosteiformes - Lepisosteidae
 Amiiformes - Amiidae
Melvius thomasi, "Kindleia fragosa" = Cyclurus fragosus
Melvius thomasi Bryant 1987 bowfin
"Kindleia fragosa" = Cyclurus fragosus Jordan 1927 bowfin
Amphibia
 Caudata -
Caudata indet. Scopoli 1777 salamander
 Proteida - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961 salamander
 Caudata - Urodela
Habrosaurus dilatus Gilmore 1928 siren
Scapherpeton tectum Cope 1876 salamander
Mammalia
 Theriamorpha -
Theria indet. Parker and Haswell 1897 mammal
Reptilia
 Testudines - Adocidae
Adocus sp. Cope 1868 turtle
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle
 Testudines - Nanhsiungchelyidae
Basilemys sinuosa Riggs 1906 turtle
 Testudines - Chelydridae
Chelydridae indet. Swainson 1839 turtle
 Testudinata - Baenidae
Baenidae indet. Cope 1882 turtle
Plesiobaena antiqua Lambe 1902 turtle
Boremys sp. Lambe 1906 turtle
PTRM 9386, neural fragment
 Testudinata -
Compsemys victa Leidy 1856 turtle
 Eosuchia -
Lepidosauria indet. Haeckel 1866 lepidosaur
 Choristodera -
Champsosaurus sp. Cope 1876 choristodere
 Theropoda - Tyrannosauridae
Tyrannosaurus rex Osborn 1905 tyrant lizard king
 Theropoda - Dromaeosauridae
Richardoestesia isosceles Sankey 2001 maniraptoran
Saurornitholestes sp. Sues 1978 maniraptoran
 Theropoda -
Paronychodon lacustris Cope 1876 maniraptoran
 Theropoda - Caenagnathidae
Caenagnathidae indet. Sternberg 1940 maniraptoran
 Ornithischia - Ceratopsidae
Ceratopsidae indet. Marsh 1888 ceratopsid
 Ornithischia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918 hadrosaurine
 Loricata -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian
 Crocodylia - Alligatoridae
Brachychampsa montana Gilmore 1911 crocodilian
 Crocodylia - Gavialidae
Thoracosaurus neocesariensis De Kay 1842 crocodilian
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876 guitarfish
 Hybodontiformes - Lonchidiidae
"Lissodus selachos" = Lonchidion selachos
"Lissodus selachos" = Lonchidion selachos Estes 1964 elasmobranch