NW Russell County (FHSM): Middle Cenomanian, Kansas
collected by M. Everhart

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Vertebrata indet. Lamarck 1801
Chondrichthyes
Elasmobranchii indet. (Bonaparte 1838)
1 specimen
Chondrichthyes - Hybodontiformes - Ptychodontidae
Ptychodus occidentalis Leidy 1868
5 specimens
Ptychodus cf. anonymus Williston 1900
2 specimens
Ptychodus decurrens Agassiz 1838
43 specimens
Chondrichthyes - Rajiformes - Rhinobatidae
Rhinobatos sp. Link 1790
2 specimens
Chondrichthyes - Lamniformes
Lamniformes indet. Berg 1958
3 specimens
Chondrichthyes - Lamniformes - Odontaspididae
Carcharias tenuiplicatus (Cappetta and Case 1975)
39 specimens
recombined as Eostriatolamia tenuiplicatus
Carcharias saskatchewanensis (Case et al. 1990)
55 specimens
recombined as Microcarcharias saskatchewanensis
Chondrichthyes - Lamniformes - Cretoxyrhinidae
Cretoxyrhina mantelli (Agassiz 1835)
19 specimens
Chondrichthyes - Lamniformes - Anacoracidae
Squalicorax volgensis (Glickman 1971)
6 specimens
nomen dubium belonging to Squalicorax
Squalicorax curvatus (Williston 1900)
19 specimens
Squalicorax falcatus (Agassiz 1843)
193 specimens
Chondrichthyes - Lamniformes - Haimirichiidae
Carcharias amonensis (Cappetta and Case 1975)
1 specimen
recombined as Haimirichia amonensis
Chondrichthyes - Lamniformes - Otodontidae
Cretolamna appendiculata (Agassiz 1835)
4 specimens
recombined as Cretalamna appendiculata
Reptilia
Coniasaurus cf. crassidens Owen 1850
5 specimens
FHSM VP-13999-14002, 14778
Aves indet. (Linnaeus 1758)
Bell and Everhart 2011 2 specimens
FHSM VP-17461 (1 max. frag, 1 mand. frag), 17458 (prox R femur)
Reptilia - Ichthyornithes
Ichthyornithes indet. Marsh 1873
Bell and Everhart 2011 1 specimen
FHSM VP-17459 (prox L coracoid)
Reptilia - Hesperornithiformes - Baptornithidae
Baptornithidae indet. American Ornithologists' Union 1910
Everhart and Bell 2009 1 specimen
FHSM VP-6318 (proximal and distal portions of the right tarsometatarsus)
Reptilia
Pterodactyloidea indet. (Plieninger 1901)
1 specimen
FHSM VP-13998, distal femur
Reptilia - Plesiosauria
Plesiosauria indet. (de Blainville 1835)
1 specimen
FHSM VP-14811, tooth
Reptilia - Plesiosauria - Pliosauridae
Brachauchenius lucasi Williston 1903
2 specimens
FHSM VP-13997, paddle. FHSM VP-14782, two teeth
    = cf. Brachauchenius lucasi Williston 1903
Bell and Everhart 2011
Actinopteri - Pachycormiformes - Pachycormidae
Protosphyraena sp. Leidy 1857
5 specimens
"or Saurodon sp."
Actinopteri
Teleostei indet. (Müller 1846)
213 specimens
Multiple species
Actinopteri - Crossognathiformes - Pachyrhizodontidae
Pachyrhizodus minimus Stewart 1899
1 specimen
Actinopteri - Aulopiformes - Enchodontidae
Enchodus sp. Agassiz 1835
100 specimens
Actinopteri - Ichthyodectiformes - Ichthyodectidae
? Xiphactinus audax (Leidy 1870)
4 specimens
see common names

Geography
Country:United States State/province:Kansas County:Russell
Coordinates: 39.0° North, 98.9° West (view map)
Paleocoordinates:37.6° North, 61.5° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Cenomanian 10 m.y. bin:Cretaceous 5
Key time interval:Middle Cenomanian
Age range of interval:99.60000 - 93.50000 m.y. ago
Age estimate:95.53 ± 0.159 Ma (Ar/Ar)
Stratigraphy
Geological group:Colorado Formation:Greenhorn Limestone Member:Lincoln Limestone
Stratigraphic resolution:group of beds
Stratigraphy comments: Argon/argon sample taken from bed 1 metre below fossil horizon.
"The plesiosaur paddle (FHSM VP-13997) was lying at the unconformable contact between the third (uppermost Graneros Shale) and the fourth (lowermost Lincoln Limestone) units described here." Remainder of remains in lowermost Lincoln Limestone
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:marginal marine indet.
Glacial or sequence phase:transgressive
Geology comments: "Deposition in turbulent waters slightly over 30 m in depth"
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:medium
Abundance in sediment:common
Fragmentation:frequent
Collection methods and comments
Collection methods:bulk,selective quarrying,surface (in situ),mechanical,sieve,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:M. Everhart
Collection method comments: FHSM: Sternberg Museum of Natural History
Metadata
Database number:94538
Authorizer:R. Butler, P. Mannion, M. Carrano Enterer:R. Butler, M. Carrano, P. Mannion
Modifier:M. Carrano Research group:vertebrate
Created:2010-02-25 08:24:24 Last modified:2012-02-27 10:41:29
Access level:the public Released:2010-02-25 08:24:24
Creative Commons license:CC BY
Reference information

Primary reference:

32160. G. A. Liggett, K. Shimada, S. C. Bennett and B. A. Schumacher. 2005. Cenomanian (Late Cretaceous) reptiles from northwestern Russell County, Kansas. PaleoBios 25:9-17 [R. Butler/R. Butler]

Secondary references:

40445 A. Bell and M. J. Everhart. 2011. Remains of small ornithurine birds from a Late Cretaceous (Cenomanian) microsite in Russell County, north-central Kansas. Transactions of the Kansas Academy of Science 114(1-2):115-123 [M. Carrano/M. Carrano]
37360 M. J. Everhart and A. Bell. 2009. A Hesperornithiform Limb Bone from the Basal Greenhorn Formation (Late Cretaceous; Middle Cenomanian) of North Central Kansas. Journal of Vertebrate Paleontology 29(3):952-956 [P. Mannion/P. Mannion]
37870 B. A. Schumacher and M. J. Everhart. 2005. A stratigraphic and taxonomic review of plesiosaurs from the old "Fort Benton Group" of central Kansas: a new assessment of old records. Paludicola 5(2):33-54 [R. Benson/R. Benson/R. Butler]