Robber's Roost (UW V-79032): Lancian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
cf. Phoenicites sp. Brongniart 1828
Cissitis rocklandensis
Bivalvia - Cardiida - Sphaeriidae
cf. Sphaerium sp. Scopoli 1777
Bivalvia - Unionida - Unionidae
Unionidae indet. Rafinesque 1820
Gastropoda - Architaenioglossa - Viviparidae
Viviparidae indet. Gray 1847
Campeloma sp. Rafinesque 1819
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964
63 elements
Chondrichthyes - Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876
4 elements
Chondrichthyes - Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964
6 elements
Actinopteri - Acipenseriformes - Acipenseridae
cf. Acipenser sp. Linnaeus 1758
1 element
Actinopteri - Sciaenidae
Platacodon nanus Marsh 1889
171 elements
Actinopteri - Amiiformes - Amiidae
Amia fragosa Jordan 1927
610 elements
Amia cf. uintaensis (Leidy 1873)
9 elements
nomen dubium belonging to Amiinae
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
1370 elements
original and current combination Lepidotus occidentalis
Albanerpetontidae
Albanerpetontidae indet. Fox and Naylor 1982
Gardner 2000 16 specimens
UW 14585, 14588, 14583, 14586, 14587, 14591, 15030, 14592; orig ID as A. nexuosus in ref 1129
Albanerpeton nexuosus Estes 1981
Gardner 2000 3 specimens
UW 14584, 14587, 15019
Albanerpeton galaktion Fox and Naylor 1982
Gardner 2000 1 specimen
UW 14593
Salientia - Pelobatidae
Anura indet. (Fischer von Waldheim 1813)
7 specimens
    = cf. Eopelobates sp. Parker 1929
Gardner and DeMar 2013
Salientia
? Scotiophryne sp. Estes 1969
1 specimen
Proteida - Batrachosauroididae
Prodesmodon copei Estes 1964
2 specimens
Opisthotriton kayi Auffenberg 1961
23 specimens
Urodela
Habrosaurus dilatus Gilmore 1928
10 specimens
Scapherpeton tectum Cope 1876
8 specimens
Lisserpeton bairdi Estes 1965
9 specimens
Reptilia - Testudines - Trionychidae
15 specimens
    = Trionychidae indet. Gray 1825
Alroy 2006
Reptilia - Testudines
Compsemys victa (Leidy 1856)
6 specimens
Reptilia - Testudines - Baenidae
Baenidae indet. Cope 1882
1 specimen
cf. Eubaena sp. Hay 1908
1 specimen
Reptilia - Testudines - Nanhsiungchelyidae
cf. Basilemys sp. Hay 1902
2 specimens
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
1 specimen
Reptilia - Testudines
Plastomenus sp. Cope 1873
3 specimens
cf. Helopanoplia distincta Hay 1908
2 specimens
Reptilia - Theropoda
Theropoda indet. Marsh 1881
Reptilia - Avetheropoda
Coelurosauria indet. Huene 1914
1 specimen
Reptilia - Avetheropoda - Dromaeosauridae
Dromaeosauridae indet. Colbert and Russell 1969
3 specimens
Dromaeosaurus sp. Matthew and Brown 1922
2 specimens
Reptilia - Avetheropoda
Paronychodon lacustris Cope 1876
2 specimens
nomen dubium belonging to Paronychodon
Reptilia
Ankylosauria indet. Osborn 1923
1 specimen
Reptilia - Nodosauridae
cf. Nodosauridae indet. Marsh 1890
1 specimen
Reptilia - Ankylosauridae
Ankylosaurus cf. magniventris Brown 1908
1 specimen
Reptilia - Hadrosauridae
Hadrosauridae indet. Cope 1869
Reptilia
? Doratodon sp. Seeley 1881
8 specimens
Leidyosuchus sternbergi (Gilmore 1910)
23 specimens
recombined as Borealosuchus sternbergii
Brachychampsa montana Gilmore 1911
46 specimens
Reptilia - Squamata - Xenosauridae
Exostinus lancensis Gilmore 1928
6 specimens
Reptilia - Squamata
Paraderma sp. Estes 1964
2 specimens
Reptilia - Squamata - Anguidae
cf. Gerrhonotus sp. Wiegmann 1828
1 specimen
Odaxosaurus piger (Gilmore 1928)
226 specimens
Reptilia - Squamata - Globauridae
cf. Contogenys sp. Estes 1969
1 specimen
Reptilia - Squamata - Chamopsiidae
Leptochamops denticulatus (Gilmore 1928)
5 specimens
Chamops segnis Marsh 1892
10 specimens
cf. Meniscognathus sp. Estes 1964
1 specimen
Reptilia - Squamata
Lamiasaurus ferox n. gen., n. sp. Longrich et al. 2012
Longrich et al. 2012 1 specimen
UW 25116B (holotype), left dentary
    = Lamiasaura ferox n. gen., n. sp. Longrich et al. 2013
Longrich et al. 2013
same holotype UW 25116B, left dentary
Reptilia
Champsosaurus sp. Cope 1876
13 specimens
Mammalia - Gypsonictopidae
Gypsonictops hypoconus Simpson 1927
1 specimen
Mammalia - Arctocyonidae
? Protungulatum sp. Sloan and Van Valen 1965
1 specimen
apparently considered P. donnae by Van Valen 1988; this may be the only Cretaceous record of Protungulatum
Mammalia
Pediomys elegans Marsh 1889
2 specimens
Mammalia - Didelphimorphia - Alphadontidae
Alphadontidae indet. Marshall et al. 1990
1 specimen
"Alphadon lulli... or wilsoni"
Alphadon marshi Simpson 1927
5 specimens
Mammalia - Multituberculata
Multituberculata indet. (Cope 1884)
Donohue et al. 2013 8 specimens
UCMP 197629, 197637, 197646, isolated p4s; UCMP 197649, isolated m2; and UCMP 197643, isolated M1; UW 15177, 17039 isolated m2s;UW20061, 25165, 25166, isolated M1s; and UW 15149, 15151, 20059, isolated M2s
Paracimexomys cf. priscus (Lillegraven 1969)
Donohue et al. 2013 1 specimen
UW 20047, isolated right M1
Cimexomys sp. Sloan and Van Valen 1965
Donohue et al. 2013 1 specimen
UCMP 197622, isolated left M1
Cimexomys minor Sloan and Van Valen 1965
7 specimens
UCMP 197664, isolated right M1, UW 25147, isolated right P4; UW 15188, isolated left M1; and UW 20078, 20088, 20095, and 20151, isolated right M1s (updated to 7 specimens by Donohue et al 2013, from 1 reported by Breithaupt 1982)
Cimexomys cf. minor Sloan and Van Valen 1965
Donohue et al. 2013 6 specimens
UCMP 197648, isolated left P4; UCMP 197614, isolated right M2, UW 15192 and 20083, isolated right P4s; UW 20143 isolated left P4; and UW 20097, isolated left M2
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus robustus (Marsh 1889)
5 specimens
UCMP 197615, isolated left m1; and UCMP 197655, isolated left P4, UW15123, fragmentary right m1;UW20046, fragmentary right m2; and UW 15195, isolated right P4 (updated to 5 specimens by Donohue et al 2013, from 4 reported by Breithaupt 1982)
Essonodon sp. Simpson 1927
2 specimens
    = Essonodon browni Simpson 1927
Donohue et al. 2013
UW 15122, left dentary fragment containing m1; UW 17374, isolated right m1 fragment; UW 25151, isolated right m2; UW20073, isolated left M2
? Essonodon browni Simpson 1927
Donohue et al. 2013 1 specimen
UCMP 197657, left p4
Paressonodon nelsoni Wilson et al. 2010
Donohue et al. 2013 4 specimens
UCMP 197660, isolated right M2, UW 15167, isolated right m2; UW 20134, isolated left m2; and UW 20041, isolated left M2
Mammalia - Multituberculata - Neoplagiaulacidae
? Neoplagiaulacidae indet. Ameghino 1890
Donohue et al. 2013 23 specimens
UCMP 197639 and 197665, both isolated right p4s; UCMP 197612, isolated right m1; UCMP 197618, isolated right M2; and UCMP 197660, left M2, UW 20139, isolated left p4; UW 15165, 20075, 20090, 20117, all isolated right m1s; UW 20048, isolated left m1; UW 15162, 15194, 20042, 20063, 20065, 20091, isolated left m2s; and UW 15163, 15176, 20043, 20069, 20082, 20102, isolated right m2s
Parikimys carpenteri Wilson et al. 2010
Donohue et al. 2013 4 specimens
UW 20052, isolated right p4; UW 20135 and 20137, isolated right m1s; and UW 15191, isolated left m1
Mesodma sp. Jepsen 1940
Donohue et al. 2013 6 specimens
UW 15160 and 20076, isolated left m1s; UW 20045, 20079, and 20121, isolated right m1s; and UW 20049, isolated right m2
Mesodma hensleighi Lillegraven 1969
4 specimens
UW 15157, isolated left p4; UW 15172, isolated right m1; UW 15190, isolated left m2; and UW 20118 and 20146, isolated right M1s (updated to 4 specimens by Donohue et al 2013, from 13 reported by Breithaupt 1982)
Mesodma thompsoni Clemens 1964
6 specimens
UCMP 197616 and 197650, isolated left m1s, UW 15152 and 20153, isolated left m2s; and UW 15164, 20106, isolated right m2s (updated to 6 specimens by Donohue et al 2013, from 13 reported by Breithaupt 1982)
Mesodma cf. thompsoni Clemens 1964
Donohue et al. 2013 1 specimen
UW 20145, isolated left p4
Mesodma formosa (Marsh 1889)
13 specimens
UCMP 197624, isolated right m1; and UCMP 197636, isolated left m2. UW 15183, isolated right m1; UW 20077, isolated left m1; UW 15175, 15187, 25162, isolated right m2s;UW15150, 15168, 15189, 20038, and 20068, isolated left M2s; and UW 15185, isolated right M2 (specimen numbers from Donohue et al (2013)
Mammalia - Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889
15 specimens
UCMP 197632, isolated left m1; UCMP 197654, isolated rightm2; UCMP 197662, isolated left m2;UCMP 197652 and 197658, isolated left P4s; UCMP 197623 and 197626, isolated left M1s; and UCMP 197627, isolated right M1, UW 20089 and 20150, isolated left m1s; UW 15156, isolated right m1; UW 15144 and 15153, isolated left m2s; UW 15146, 15147, and 15169, isolated right m2s; UW 17375, isolated right P4; UW 15184 and 20044, isolated left P4s; UW 15155 and 20058, isolated right M1s; UW 20133, isolated left M1; and UW 20062, isolated left M2 (updated to 15 specimens by Donohue et al 2013, from 10 reported by Breithaupt 1982)
Cimolodon cf. nitidus Marsh 1889
Donohue et al. 2013 10 specimens
UCMP 197646 and 197651, isolated left p4s; UCMP 197631, isolated right m2, UW 20170, isolated right m1; UW 25165, isolated left m1; UW 20039 and 20084, isolated right and left m2s, respectively; and UW 20087, 20093, and 20131, isolated rightM2s
Pinopsida - Pinales - Taxodiaceae
Sequoia cuneata
Magnoliopsida - Rhamnales - Rhamnaceae
Rhamnus hirsuta
Magnoliopsida - Urticales - Moraceae
Ficus planicostata
Ficus rockvalensis
cf. Ficus paryearensis
var. elongata
Magnoliopsida - Magnoliales - Lauraceae
Laurophyllum meeki
cf. Sassafras thermale Brown 1962
Magnoliopsida - Fagales - Fagaceae
Dryophyllum cf. subfalcatum
see common names

Geography
Country:United States State/province:Wyoming County:Sweetwater
Coordinates: 41.6° North, 108.7° West (view map)
Paleocoordinates:48.9° North, 84.5° West
Basis of coordinate:stated in text
Altitude:2058 meters
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
Formation:Lance
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:brown,gray mudstone
Includes fossils?Y
Lithology description: The lithology is a gray-brown-colored mudstone with invertebrate fossils and carbonaceous detritus deposited in a paludal stream environment
Environment:fluvial indet.
Geology comments: "a paludal stream environment"
Taphonomy
Modes of preservation:body
Lagerst�tten type:concentrate
Degree of concentration:concentrated
Size of fossils:mesofossils
Articulated whole bodies:none
Associated major elements:none
Disassociated major elements:many
Disassociated minor elements:many
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,surface (float),sieve,field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:UW
Taxonomic list comments:this is the only screenwashing site and there is no indication that specimens come from other, nearby sites
"Invertebrate fossils" mentioned, but not described
Metadata
Also known as:UCMP V-84215, Black Butte
Database number:14514
Authorizer:J. Alroy, P. Holroyd, P. Barrett, R. Benson, M. Carrano Enterer:J. Alroy, P. Holroyd, T. Cleary, R. Benson, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:1993-09-27 00:00:00 Last modified:2013-07-26 15:08:50
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

1129. B. H. Breithaupt. 1982. Paleontology and paleoecology of the Lance Formation (Maastrichtian), east flank of Rock Springs Uplift, Sweetwater County, Wyoming. Contributions to Geology, University of Wyoming 21(2):123-151 [J. Alroy/J. Alroy/M. Carrano]

Secondary references:

18120 J. Alroy. 2006. Synonymies and reidentifications of North American fossil vertebrates. [J. Alroy/J. Alroy/J. Alroy]
46718 S. L. Donohue, G. P. Wilson, and B. H. Breithaupt. 2013. Latest Cretaceous multituberculates of the Black Butte Station local fauna (Lance Formation, southwestern Wyoming), with implications for compositional differences among mammalian local faunas of the Western Interior. Journal of Vertebrate Paleontology 33(3):677-695 [R. Benson/R. Benson/M. Carrano]
42675 J. D. Gardner. 2000. Albanerpetontid amphibians from the Upper Cretaceous (Campanian and Maastrichtian) of North America. Geodiversitas 22(3):349-388 [M. Carrano/M. Carrano/M. Carrano]
65027 J. D. Gardner and D. E. DeMar. 2013. Mesozoic and Palaeocene lissamphibian assemblages of North America: a comprehensive review. Palaeobiodiversity and Palaeoenvironments 93:459-515 [P. Holroyd/P. Holroyd/P. Holroyd]
43992 N. R. Longrich, B.-A. S. Bhullar, and J. A. Gauthier. 2012. Mass extinction of lizards and snakes at the Cretaceous–Paleogene boundary. Proceedings of the National Academy of Sciences 109(52):21396-21401 [R. Benson/R. Benson/T. Liebrecht]
60128 N. R. Longrich, B.-A. S. Bhullar, and J. A. Gauthier. 2013. Correction for Longrich et al, Mass extinction of lizards and snakes at the Cretaceous–Paleogene boundary. Proceedings of the National Academy of Sciences 110(16):6608-6608 [P. Barrett/T. Cleary]