NW Russell County (FHSM) (Cretaceous of the United States)

Where: Russell County, Kansas (39.0° N, 98.9° W: paleocoordinates 37.6° N, 61.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Lincoln Limestone Member (Greenhorn Limestone Formation), Middle Cenomanian (99.6 - 93.5 Ma)

• 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

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; sandstone

• "Deposition in turbulent waters slightly over 30 m in depth"

Size classes: macrofossils, mesofossils

Collected by M. Everhart; reposited in the USNM

Collection methods: bulk, quarrying, surface (in situ), mechanical, sieve,

• FHSM: Sternberg Museum of Natural History

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 94538: authorized by Richard Butler, entered by Richard Butler on 25.02.2010, edited by Philip Mannion and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Vertebrata indet. Lamarck 1801
 Elasmobranchii -
 Hybodontiformes - Ptychodontidae
Ptychodus cf. anonymus Williston 1900 elasmobranch
Ptychodus occidentalis Leidy 1868 elasmobranch
Ptychodus decurrens Agassiz 1839 elasmobranch
 Rajiformes - Rhinobatidae
Rhinobatos sp. Link 1790 guitarfish
 Galeomorphi -
Lamniformes indet. Berg 1958 mackerel shark
 Lamniformes - Anacoracidae
Squalicorax curvatus Williston 1900 crow shark
Squalicorax falcatus Agassiz 1843 crow shark
Squalicorax volgensis Glikman 1971 crow shark
 Lamniformes - Cretoxyrhinidae
Cretoxyrhina mantelli Agassiz 1843 mackerel shark
Cretolamna appendiculata Agassiz 1843 mackerel shark
 Lamniformes - Odontaspididae
 Teleostei -
Teleostei indet. Müller 1846
Multiple species
 Salmoniformes - Enchodontidae
Enchodus sp. Agassiz 1843
 Ichthyodectiformes - Ichthyodectidae
 Crossognathiformes - Pachyrhizodontidae
Pachyrhizodus minimus Stewart 1899
 Pachycormiformes - Pachycormidae
Protosphyraena sp. Leidy 1857
"or Saurodon sp."
 Aves -
Aves indet.1 bird
FHSM VP-17461 (1 max. frag, 1 mand. frag), 17458 (prox R femur)
 Hesperornithiformes - Baptornithidae
Baptornithidae indet.2 American Ornithologists' Union 1910 bird
FHSM VP-6318 (proximal and distal portions of the right tarsometatarsus)
 Ornithurae -
"Ichthyornithes indet." = Ichthyornithiformes1
"Ichthyornithes indet." = Ichthyornithiformes1 Marsh 1873 bird
FHSM VP-17459 (prox L coracoid)
 Pterosauria -
Pterodactyloidea indet. pterosaur
FHSM VP-13998, distal femur
 Squamata - Dolichosauridae
Coniasaurus cf. crassidens Owen 1850 squamates
FHSM VP-13999-14002, 14778
 Sauropterygia -
Plesiosauria indet. plesiosaur
FHSM VP-14811, tooth
 Sauropterygia - Pliosauridae
cf. Brachauchenius lucasi1 Williston 1903 plesiosaur
FHSM VP-13997, paddle. FHSM VP-14782, two teeth