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

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964
6 specimens
SDSM 64204
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
SDSM 64205, 64350
Acipenseriformes - Acipenseridae
? Acipenser sp. Linnaeus 1758
SDSM 64206, 64217
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
Habrosaurus dilatus Gilmore 1928
17 specimens
SDSM 64228–64231
Scapherpeton tectum Cope 1876
SDSM 64218–64223
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus ? robustus (Marsh 1889)
Wilson 1983
Cimolomys ? gracilis Marsh 1889
Wilson 1983
Mammalia - Multituberculata - Cimolodontidae
Cimolodon ? nitidus Marsh 1889
Wilson 1983
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma ? hensleighi Lillegraven 1969
Wilson 1983
Mesodma thompsoni Clemens 1964
Wilson 1983
Mesodma formosa (Marsh 1889)
Wilson 1983
Mammalia - Gypsonictopidae
Gypsonictops hypoconus Simpson 1927
Wilson 1983
Mammalia - Peradectidae
Alphadon sp. Simpson 1927
Wilson 1983
    = Peradectidae indet. Crochet 1979
Alroy 2002
Mammalia - Pediomyidae
Pediomys elegans Marsh 1889
Wilson 1983
Pediomys hatcheri (Osborn 1898)
Wilson 1983
original and current combination Protolambda hatcheri
Pediomys florencae Clemens 1966
Wilson 1983
recombined as Protolambda florencae
Mammalia - Stagodontidae
Didelphodon cf. vorax Marsh 1889
Wilson 1983
Reptilia
Testudinata indet. (Oppel 1811)
SDSM 64392, 64280, 64278
Sauriscus cooki Estes 1964
3 specimens
recombined as Estescincosaurus cooki
SDSM 64243, 64244
? Parasaniwa wyomingensis Gilmore 1928
2 specimens
SDSM 64250
Reptilia - Anguidae
Peltosaurus piger Gilmore 1928
10 specimens
recombined as Odaxosaurus piger
SDSM 64246, 64247
Reptilia - Xenosauridae
Exostinus lancensis Gilmore 1928
2 specimens
SDSM 64248, 64249
Reptilia - Globauridae
cf. Contogenys sloani Estes 1969
1 specimen
SDSM 64245
Reptilia - Chamopsiidae
Meniscognathus altmani Estes 1964
2 specimens
SDSM 64241, 64242
Leptochamops denticulatus (Gilmore 1928)
8 specimens
SDSM 64239, 64240
Chamops segnis Marsh 1892
9 specimens
SDSM 64237, 64238, 64367, 64368
Reptilia
Brachychampsa cf. montana Gilmore 1911
SDSM 6261, 64262
Leidyosuchus cf. sternbergi (Gilmore 1910)
recombined as Borealosuchus sternbergii
SDSM 64251–64257, 64259
Reptilia - Nodosauridae
Nodosauridae indet. Marsh 1890
6 specimens
SDSM 64266, 64267, 64283, 64284; teeth and scutes
Reptilia - Pachycephalosauridae
? Pachycephalosauridae indet. Sternberg 1945
3 specimens
SDSM 64376
Reptilia - Ceratopsidae
Triceratops sp. Marsh 1889
SDSM 64283, 64284, 6842
Reptilia
Thescelosaurus neglectus Gilmore 1913
SDSM 64263–64265
Theropoda indet. (Marsh 1881)
SDSM 64385
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
Paronychodon lacustris Cope 1876
nomen dubium belonging to Paronychodon
SDSM 64270, 64271
Reptilia - Caenagnathidae
cf. Chirostenotes sp. Gilmore 1924
3 specimens
SDSM 64371, 64372
Reptilia - Tyrannosauridae
cf. Tyrannosaurus sp. Osborn 1905
2 specimens
SDSM 64285, 64394
cf. Gorgosaurus sp. Lambe 1914
SDSM 64286, 64287
Reptilia
Champsosaurus sp. Cope 1876
SDSM 64233–64236
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
original and current combination Lepidotus occidentalis
SDSM 64211–64213
Actinopteri - Amiiformes - Amiidae
Amia sp. Linnaeus 1766
SDSM 64210
Amia fragosa Jordan 1927
SDSM 64209, 64391
Actinopteri - Sciaenidae
Platacodon nanus Marsh 1889
15 specimens
SDSM 64216
Actinopteri - Elopiformes - Elopidae
Elopidae indet. Bonaparte 1846
1 specimen
SDSM 64214
Actinopteri - Albuliformes - Albulidae
Coriops amnicolus Estes 1969
SDSM 64215
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:70.60000 - 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]