Eureka Quarry, SDSM loc. V637: Lancian, South Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Pediomyidae
Pediomys florencae Clemens 1966
Wilson 1983
recombined as Protolambda florencae
Pediomys hatcheri (Osborn 1898)
Wilson 1983
original and current combination Protolambda hatcheri
Pediomys elegans Marsh 1889
Wilson 1983
Mammalia - Peradectidae
Alphadon sp. Simpson 1927
Wilson 1983
    = Peradectidae indet. Crochet 1979
Alroy 2002
Mammalia - Stagodontidae
Didelphodon cf. vorax Marsh 1889
Wilson 1983
Mammalia - Gypsonictopidae
Gypsonictops hypoconus Simpson 1927
Wilson 1983
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma ? hensleighi Lillegraven 1969
Wilson 1983
Mesodma formosa (Marsh 1889)
Wilson 1983
Mesodma thompsoni Clemens 1964
Wilson 1983
Mammalia - Multituberculata - Cimolodontidae
Cimolodon ? nitidus Marsh 1889
Wilson 1983
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus ? robustus (Marsh 1889)
Wilson 1983
Cimolomys ? gracilis Marsh 1889
Wilson 1983
Reptilia
Sauriscus cooki Estes 1964
3 specimens
recombined as Estescincosaurus cooki
SDSM 64243, 64244
Reptilia - Globauridae
cf. Contogenys sloani Estes 1969
1 specimen
SDSM 64245
Reptilia - Chamopsiidae
Leptochamops denticulatus (Gilmore 1928)
8 specimens
SDSM 64239, 64240
Chamops segnis Marsh 1892
9 specimens
SDSM 64237, 64238, 64367, 64368
Meniscognathus altmani Estes 1964
2 specimens
SDSM 64241, 64242
Reptilia - Xenosauridae
Exostinus lancensis Gilmore 1928
2 specimens
SDSM 64248, 64249
Reptilia - Anguidae
Peltosaurus piger Gilmore 1928
10 specimens
recombined as Odaxosaurus piger
SDSM 64246, 64247
Reptilia
? Parasaniwa wyomingensis Gilmore 1928
2 specimens
SDSM 64250
Testudinata indet. (Oppel 1811)
SDSM 64392, 64280, 64278
Leidyosuchus cf. sternbergi (Gilmore 1910)
recombined as Borealosuchus sternbergii
SDSM 64251–64257, 64259
Brachychampsa cf. montana Gilmore 1911
SDSM 6261, 64262
Reptilia - Ceratopsidae
Triceratops sp. Marsh 1889
SDSM 64283, 64284, 6842
Reptilia - Pachycephalosauridae
? Pachycephalosauridae indet. Sternberg 1945
3 specimens
SDSM 64376
Reptilia
Thescelosaurus neglectus Gilmore 1913
SDSM 64263–64265
Reptilia - Nodosauridae
Nodosauridae indet. Marsh 1890
6 specimens
SDSM 64266, 64267, 64283, 64284; teeth and scutes
Reptilia
Theropoda indet. (Marsh 1881)
SDSM 64385
Paronychodon lacustris Cope 1876
nomen dubium belonging to Paronychodon
SDSM 64270, 64271
Reptilia - Troodontidae
Saurornithoides cf. mongoliensis Osborn 1924
3 specimens
SDSM 64274, 64275
? Troodon sp. Leidy 1856
3 specimens
SDSM 64369, 64370
Reptilia - Dromaeosauridae
cf. Dromaeosaurus sp. Matthew and Brown 1922
8 specimens
SDSM 64272, 64273, 64393
Reptilia - Caenagnathidae
cf. Chirostenotes sp. Gilmore 1924
3 specimens
SDSM 64371, 64372
Reptilia - Tyrannosauridae
cf. Gorgosaurus sp. Lambe 1914
SDSM 64286, 64287
cf. Tyrannosaurus sp. Osborn 1905
2 specimens
SDSM 64285, 64394
Reptilia
Champsosaurus sp. Cope 1876
SDSM 64233–64236
Amphibia - Anura
? Pelobatidae indet. Lataste 1879
4 specimens
SDSM 64232
    = Anura indet. Fischer von Waldheim 1813
Gardner and DeMar 2013
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961
SDSM 64224–64227
Amphibia - Temnospondyli - Urodela
Scapherpeton tectum Cope 1876
SDSM 64218–64223
Habrosaurus dilatus Gilmore 1928
17 specimens
SDSM 64228–64231
Actinopteri - Amiiformes - Amiidae
Amia sp. Linnaeus 1766
SDSM 64210
Amia fragosa Jordan 1927
SDSM 64209, 64391
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
original and current combination Lepidotus occidentalis
SDSM 64211–64213
Actinopteri - Albuliformes - Albulidae
Coriops amnicolus Estes 1969
SDSM 64215
Actinopteri - Elopiformes - Elopidae
Elopidae indet. Bonaparte 1846
1 specimen
SDSM 64214
Actinopteri - Sciaenidae
Platacodon nanus Marsh 1889
15 specimens
SDSM 64216
Acipenseriformes - Acipenseridae
? Acipenser sp. Linnaeus 1758
SDSM 64206, 64217
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
SDSM 64205, 64350
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964
6 specimens
SDSM 64204
see common names

Geography
Country:United States State/province:South Dakota County:Harding
Coordinates: 45.5° North, 103.1° West (view map)
Paleocoordinates:51.6° North, 76.8° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
*Epoch:Senonian
Key time interval:Lancian
Age range of interval:72.10000 - 66.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Montana Formation:Hell Creek
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:coarse channel fill
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Associated major elements:some
Disassociated major elements:many
Collection methods and comments
Collection methods:bulk,surface (float),sieve,field collection
Collection size:183 specimens
Rock censused:12000 kg
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:some specimens from other localities within 1/2 mile of the quarry
Metadata
Database number:14537
Authorizer:J. Alroy, M. Carrano Enterer:J. Alroy, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:1993-09-27 00:00:00 Last modified:2021-05-05 11:13:16
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
66164. M. T. Greenwald. 1971. The Lower Vertebrates of the Hell Creek Formation, Harding County, South Dakota. 1-77 [M. Carrano/M. Carrano/M. Uhen]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
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]
3705 R. W. Wilson. 1983. Late Cretaceous mammals of western South Dakota, 1974. National Geographic Society Research Reports (1971, 1973, or 1974) 15:749-752 [J. Alroy/J. Alroy/M. Carrano]