Fales Rocks 1: Judithian, Wyoming
collected by J. Hutchison, M. Greenwald, J. Lillegraven, D. DeMar, B. Breithaupt 1976, 1981-1983, 2005-2006

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Hybodontiformes - Hybodontidae
Hybodus montanensis Case 1978
Database 2005 2 elements
recombined as Meristodonoides montanensis
Hybodus sp. Agassiz 1834
Database 2005 3 elements
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964
Database 2005 3 elements
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Database 2005 7 elements
Chondrichthyes - Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964
Database 2005 1 element
recombined as Restesia americana
Acipenseriformes - Polyodontidae
Polyodontidae indet. Bonaparte 1838
DeMar and Breithaupt 2006 1 element
Amphibia - Anura
cf. Eopelobates sp. Parker 1929
DeMar and Breithaupt 2006 3 specimens
UW 44274*, 44275*, 44276*, maxillae
    = Anura informal indet. 1 Fischer von Waldheim 1813
Gardner et al. 2016
Amphibia - Temnospondyli
Anura indet. (Fischer von Waldheim 1813)
Database 2005 2 specimens
Anura indet. (Fischer von Waldheim 1813)
Gardner et al. 2016
"unstudied collections of AMNH FARB, UCMP, and UW"
Scotiophryne pustulosa Estes 1969
Gardner et al. 2016 4 specimens
UW 44312, maxilla; UW 34924, 44221, 44222, ilia
Amphibia - Temnospondyli - Batrachosauroididae
Prodesmodon copei Estes 1964
Database 2005 1 specimen
Amphibia - Temnospondyli - Urodela
Habrosaurus dilatus Gilmore 1928
Database 2005 1 specimen
Scapherpeton tectum Cope 1876
Database 2005 3 specimens
Lisserpeton bairdi Estes 1965
DeMar and Breithaupt 2006 1 specimen
Mammalia
Mammalia indet. Linnaeus 1758
Database 2005 2 specimens
Mammalia - Multituberculata - Cimolomyidae
Cimolomys clarki Sahni 1972
Mammalia - Multituberculata - Cimolodontidae
Cimolodon sp. Marsh 1889
Database 2005 2 specimens
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma primaeva (Lambe 1902)
recombined as Filikomys primaevus
Mesodma sp. Jepsen 1940
Mammalia
Theria indet. Parker and Haswell 1897
Database 2005 1 specimen
Mammalia - Gypsonictopidae
Gypsonictops lewisi Sahni 1972
Mammalia - Marsupialia
Marsupialia indet. (Illiger 1811)
Database 2005 5 specimens
Mammalia - Alphadontidae
Alphadon halleyi Sahni 1972
includes "A. sahnii" type
Alphadon russelli Fox 1979
    = Turgidodon russelli Fox 1979
Alroy 2002
Mammalia
Alphadon lulli Clemens 1966
    = Protalphadon lulli Clemens 1966
Alroy 2002
Reptilia - Baenidae
Boremys sp. Lambe 1906
DeMar and Breithaupt 2006 3 specimens
Reptilia - Testudines
Testudines indet. Batsch 1788
DeMar and Breithaupt 2006 1 specimen
Reptilia - Testudines - Chelydridae
Chelydridae indet. Swainson 1839
DeMar and Breithaupt 2006 3 specimens
Reptilia - Testudines
Aspideretoides cf. foveatus (Leidy 1856)
DeMar and Breithaupt 2006 1 specimen
original and current combination Trionyx foveatus
Reptilia - Testudines - Nanhsiungchelyidae
Basilemys sp. Hay 1902
DeMar and Breithaupt 2006 2 specimens
Reptilia - Testudines - Toxochelyidae
Lophochelys sp. Zangerl 1953
DeMar and Breithaupt 2006 1 specimen
Reptilia - Chamopsiidae
Leptochamops thrinax Gao and Fox 1991
DeMar and Breithaupt 2006 1 specimen
Reptilia
Alligatorinae indet. Cuvier 1807
DeMar and Breithaupt 2006 1 specimen
Brachychampsa montana Gilmore 1911
Database 2005 4 specimens
Reptilia - Ankylosauridae
Ankylosauridae indet. Brown 1908
DeMar and Breithaupt 2006 3 specimens
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
DeMar and Breithaupt 2006 3 specimens
two morphotypes
Reptilia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918
DeMar and Breithaupt 2006
Lambeosaurinae indet. Parks 1923
DeMar and Breithaupt 2006
Reptilia - Dromaeosauridae
Richardoestesia isosceles Sankey 2001
DeMar and Breithaupt 2006 1 specimen
Saurornitholestes sp. Sues 1978
DeMar and Breithaupt 2006 1 specimen
Reptilia
Paronychodon lacustris Cope 1876
DeMar and Breithaupt 2006 1 specimen
nomen dubium belonging to Paronychodon
Reptilia - Caenagnathidae
Caenagnathidae indet. Sternberg 1940
Yun and Funston 2021
UW 44439, a nearly complete left metatarsal I
Reptilia - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906
DeMar and Breithaupt 2006 3 specimens
Daspletosaurus sp. Russell 1970
DeMar and Breithaupt 2006 1 specimen
Reptilia
Champsosaurus natator Parks 1933
Database 2005 1 specimen
Actinopteri - Pycnodontiformes - Pycnodontidae
Pycnodontidae indet. (Agassiz 1833)
Database 2005 3 elements
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
Database 2005 1 element
Lepisosteus occidentalis (Leidy 1856)
Database 2005 8 elements
original and current combination Lepidotus occidentalis
Actinopteri - Amiiformes - Amiidae
Amia fragosa Jordan 1927
DeMar and Breithaupt 2006 6 elements
    = Amiinae indet. Bonaparte 1837
DeMar and Breithaupt 2006
Melvius sp. Bryant 1987
DeMar and Breithaupt 2006 7 elements
Actinopteri - Albuliformes - Albulidae
Coriops amnicolus Estes 1969
DeMar and Breithaupt 2006 1 element
Actinopteri - Aspidorhynchiformes - Aspidorhynchidae
Belonostomus longirostris (Lambe 1902)
Database 2005 2 elements
see common names

Geography
Country:United States State/province:Wyoming County:Natrona
Coordinates: 42.9° North, 107.3° West (view map)
Paleocoordinates:49.7° North, 75.8° West
Basis of coordinate:stated in text
Altitude:1922 meters
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
*Epoch:Senonian
Key time interval:Judithian
Age range of interval:83.50000 - 70.60000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Mesaverde
Stratigraphic resolution:group of beds
Stratigraphy comments: now dated to upper middle Campanian
Lithology and environment
Primary lithology:ferruginous,pebbly lithified conglomerate
Secondary lithology:"cross stratification",yellow argillaceous sandstone
Includes fossils?Y
Includes fossils?Y
Lithology description: "yellowish to golden channel sandstone...richest fossil-bearing level is within a basal ironstone-cemented pebble conglomerate and throughout the overlying 2 m of more friable, yellowish sanstone. Fossils are seen both as isolated occurrences in massively cross-bedded sandstones and within concentrations of clay-gall stringers along thin bedding planes."
Environment:"channel"
Taphonomy
Modes of preservation:body
Lagerst�tten type:concentrate
Degree of concentration:concentrated
Size of fossils:mesofossils
Spatial orientation:random
Preservation of anatomical detail:good
Disassociated major elements:many
Disassociated minor elements:some
Fragmentation:occasional
Temporal resolution:time-averaged
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:bulk,sieve,field collection
Collection size:45 specimens
Reason for describing collection:general faunal/floral analysis
Museum repositories:UCMP
Collectors:J. Hutchison, M. Greenwald, J. Lillegraven, D. DeMar, B. Breithaupt Collection dates:1976, 1981-1983, 2005-2006
Taxonomic list comments:exactly the same level as Barwin QuarryNISP 45 (based on catalog numbers)
Metadata
Also known as:UW V-81006; UCMP V-81101
Database number:14458
Authorizer:J. Alroy, P. Mannion, P. Holroyd, M. Carrano Enterer:J. Alroy, M. Carrano, P. Mannion, P. Holroyd
Modifier:M. Carrano Research group:vertebrate
Created:1994-04-30 00:00:00 Last modified:2023-07-14 14:15:32
Access level:the public Released:1994-04-30 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

2237. J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
13103 U.C.M.P. Database. 2005. UCMP collections database. University of California Museum of Paleontology [M. Carrano/M. Carrano/M. Carrano]
34478ETE D. G. DeMar and B. H. Breithaupt. 2008. Terrestrial and aquatic vertebrate paleocommunities of the Mesaverde Formation (Upper Cretaceous, Campanian) of the Wind River and Bighorn Basins, Wyoming, USA. In J. T. Sankey & S. Baszio (ed.), Vertebrate Microfossil Assemblages: Their Role in Paleoecology and Paleobiogeography 78-103 [M. Carrano/M. Carrano/M. Carrano]
17857ETE D. G. DeMar, Jr. and B. H. Breithaupt. 2006. The nonmammalian vertebrate microfossil assemblages of the Mesaverde Formation (Upper Cretaceous, Campanian) of the Wind River and Bighorn Basins, Wyoming. In S. G. Lucas and R. M. Sullivan (eds.), Late Cretaceous Vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin 35:33-54 [M. Carrano/M. Carrano]
64015 J. D. Gardner, C. M. Redman, and R. L. Cifelli. 2016. The hopping dead: Late Cretaceous frogs from the middle-late Campanian (Judithian) of western North America. Fossil Imprint 72(1-2):78-107 [P. Holroyd/P. Holroyd/M. Carrano]
82394 C.-g. Yun and G. F. Funston. 2021. A caenagnathid oviraptorosaur metatarsal from the Mesaverde Formation (Campanian) of Wyoming, USA. Vertebrate Anatomy Morphology Palaeontology 9:105-115 [P. Mannion/P. Mannion]