PTRM V86002, East Marmarth: Late/Upper Maastrichtian, North Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lissodus selachos (Estes 1964)
9 specimens
original and current combination Lonchidion selachos
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
80 specimens
Chondrichthyes - Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964
1 specimen
recombined as Restesia americana
Acipenseriformes - Acipenseridae
cf. Acipenser sp. Linnaeus 1758
3 specimens
unclassified
Pterosauria indet. Kaup 1834
1 specimen
    = ? Tetrapoda indet. Jaekel 1911
Dalla Vecchia et al. 2013
"neither pterosaur nor avian"
Amphibia - Temnospondyli
Caudata indet. Scopoli 1777
15 specimens
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961
5 specimens
Prodesmodon copei Estes 1964
Gardner and DeMar 2013
Amphibia - Temnospondyli - Urodela
Habrosaurus dilatus Gilmore 1928
1 specimen
Scapherpeton tectum Cope 1876
20 specimens
Proamphiuma cretacea Estes 1969
Gardner and DeMar 2013
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus sp. Cope 1882
1 specimen
Mammalia - Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889
1 specimen
Mammalia
Theria indet. Parker and Haswell 1897
4 specimens
Mammalia - Creodonta
Cimolestes magnus Clemens and Russell 1965
1 specimen
recombined as Altacreodus magnus
Reptilia
Compsemys victa (Leidy 1856)
1 specimen
Reptilia - Baenidae
Baenidae indet. Cope 1882
1 specimen
Plesiobaena antiqua (Lambe 1902)
1 specimen
Reptilia - Testudines - Chelydridae
Chelydridae indet. Swainson 1839
1 specimen
Reptilia - Testudines
Kinosternidae indet. (Hay 1892)
1 specimen
spelled with current rank as Kinosternoidea
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
1 specimen
Reptilia - Testudines
Helopanoplia distincta Hay 1908
1 specimen
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
1 specimen
Reptilia - Testudines - Nanhsiungchelyidae
Basilemys sinuosa Riggs 1906
1 specimen
Reptilia
Thoracosaurus neocesariensis (De Kay 1842)
9 specimens
Brachychampsa montana Gilmore 1911
124 specimens
Leidyosuchus sternbergi (Gilmore 1910)
143 specimens
recombined as Borealosuchus sternbergii
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
81 specimens
Reptilia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918
205 specimens
Reptilia
Thescelosaurus neglectus Gilmore 1913
2 specimens
Reptilia - Dromaeosauridae
Richardoestesia isosceles Sankey 2001
11 specimens
Reptilia
Paronychodon lacustris Cope 1876
8 specimens
nomen dubium belonging to Paronychodon
Aves indet. Linnaeus 1758
3 specimens
Reptilia - Hesperornithiformes
Hesperornithiformes indet. Fürbringer 1888
1 specimen
Reptilia - Tyrannosauridae
Tyrannosaurus rex Osborn 1905
21 specimens
Reptilia
Lepidosauria indet. (Haeckel 1866)
16 specimens
Champsosaurus sp. Cope 1876
21 specimens
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
100 specimens
original and current combination Lepidotus occidentalis
Actinopteri - Amiiformes - Amiidae
Kindleia fragosa Jordan 1927
226 specimens
recombined as Cyclurus fragosus
Melvius thomasi Bryant 1987
28 specimens
Actinopteri
Teleostei indet. (Müller 1846)
27 specimens
Actinopteri - Aspidorhynchiformes - Aspidorhynchidae
Belonostomus longirostris (Lambe 1902)
2 specimens
see common names

Geography
Country:United States State/province:North Dakota County:Slope
Coordinates: 46.3° North, 103.9° West (view map)
Paleocoordinates:52.5° North, 77.3° West
Basis of coordinate:estimated from map
Altitude:853 meters
Geographic resolution:small collection
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:70.60000 - 66.00000 m.y. ago
Stratigraphy
Formation:Hell Creek
Local section:East Marmarth Local bed:29.18 m
Local order:top to bottom
Stratigraphic resolution:bed
Stratigraphy comments: datum -29.18, K-T section 86148
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:"channel"
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils,mesofossils
Disassociated major elements:many
Disassociated minor elements:many
Collection methods and comments
Collection methods:bulk,sieve,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:45144
Authorizer:M. Carrano, R. Butler, P. Holroyd Enterer:M. Carrano, R. Butler, P. Holroyd
Modifier:M. Carrano Research group:vertebrate
Created:2004-10-07 13:26:18 Last modified:2022-09-22 09:17:18
Access level:the public Released:2004-10-07 13:26:18
Creative Commons license:CC BY
Reference information

Primary reference:

11749.ETE 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]

Secondary references:

59166 F. M. Dalla Vecchia, V. Riera, J. O. Oms, J. Dinares-Turell, R. Gaete and A. Galobart. 2013. The last pterosaurs: first record from the uppermost Maastrichtian of the Tremp Syncline (northern Spain). Acta Geologica Sinica 87(5):1198-1227 [R. Butler/R. Butler]
65027 J. D. Gardner and D. G. DeMar. 2013. Mesozoic and Palaeocene lissamphibian assemblages of North America: a comprehensive review. Palaeobiodiversity and Palaeoenvironments 93:459-515 [P. Holroyd/P. Holroyd/M. Carrano]
82664 G. Knauss and A. A. Farke. 2002. Comparison of vertebrate microfossil collection methods in the Late Cretaceous Hell Creek Formation of North Dakota: surface collection vs. screen washing. Journal of Vertebrate Paleontology 22(3 (suppl.)):75A [M. Carrano/M. Carrano]