Scabby Butte, Site 3: Early/Lower Maastrichtian, Canada
collected by L. S. Russell, W. Langston 1955, 1957

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Cimolestidae
Cimolestes sp. Marsh 1889
Lillegraven and McKenna 1986
Mammalia - Gypsonictopidae
Gypsonictops sp. Simpson 1927
Lillegraven and McKenna 1986
Mammalia - Pediomyidae
Pediomys cf. krejcii Clemens 1966
Lillegraven and McKenna 1986
recombined as Leptalestes krejcii
(1 measurement)
Pediomys cf. cooki Clemens 1966
Lillegraven and McKenna 1986
recombined as Leptalestes cooki
Mammalia - Stagodontidae
Eodelphis ? cutleri (Woodward 1916)
Lillegraven and McKenna 1986
Didelphodon sp. Marsh 1889
Lillegraven and McKenna 1986
ref 1540: said to be a new species
Mammalia - Alphadontidae
Alphadon rhaister Clemens 1966
Lillegraven and McKenna 1986
    = Turgidodon ? rhaister Clemens 1966
Alroy 2002
Mammalia - Multituberculata - Cimolomyidae
Cimolomys gracilis Marsh 1889
Lillegraven and McKenna 1986
Meniscoessus robustus (Marsh 1889)
Lillegraven and McKenna 1986
Meniscoessus conquistus Cope 1882
Lillegraven and McKenna 1986
Mammalia - Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889
Lillegraven and McKenna 1986
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma cf. thompsoni Clemens 1964
Lillegraven and McKenna 1986
Reptilia - Mosasauridae
Plioplatecarpus sp. Dollo 1882
1 individual
NMC 21830
Reptilia
Champsosaurus sp. Cope 1876
3 individuals
NMC 10654
Reptilia - Ornithomimidae
Ornithomimidae indet. Marsh 1890
1 specimen
NMC 10653
Reptilia - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906
1 specimen
NMC 10675
Reptilia - Coeluridae
? Coeluridae indet. Marsh 1881
1 specimen
NMC 10674
Reptilia - Nodosauridae
Edmontonia cf. longiceps Sternberg 1928
1 specimen
NMC 21864
Reptilia - Hadrosauridae
Edmontosaurus sp. Lambe 1917
134 specimens
NMC 9591-93, 9595, 9597-98, 9603-03, 9716-18, 9720, 9791, 9793-9804, 21884-928, 21937-40, 21942-56, 21958-69, 21971-22000, 22005-08
Reptilia - Crocodylia
Leidyosuchus sp. Lambe 1907
NMC 10656
    = Crocodylia indet. Owen 1842
Alroy 2007
Reptilia - Crocodylidae
Crocodylidae indet. Cuvier 1807
8 specimens
NMC 10676
Amphibia - Temnospondyli - Albanerpetontidae
Albanerpetontidae indet. Fox and Naylor 1982
Gardner 2000 1 specimen
UALVP 40044
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton sp. Auffenberg 1961
NMC 21865-66
    = Opisthotriton kayi Auffenberg 1961
Gardner and DeMar 2013
Actinopteri - Amiiformes - Amiidae
Amia cf. fragosa Jordan 1927
NMC 10677
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
NMC 10679
Actinopteri - Aspidorhynchiformes - Aspidorhynchidae
Belonostomus cf. longirostris (Lambe 1902)
NMC 21863
Actinopteri - Sciaenidae
Platacodon cf. nanus Marsh 1889
3 elements
NMC 21874
Actinopteri - Elopiformes - Phyllodontidae
Paralbula casei Estes 1969
100 specimens
NMC 21867
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
NMC 10672 (several hundred teeth), 10673 (ca. 30 scales)
Chondrichthyes - Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964
25 elements
recombined as Restesia americana
NMC 21869, 21876, 71868
Chondrichthyes - Squatinidae
Squatina sp. Dumeril 1806
9 elements
NMC 21875, 21877
Bivalvia - Pholadida - Corbulidae
Corbula perangulata
Langston 1976
Bivalvia - Unionida - Unionidae
cf. Plesielliptio sp. (Russell 1934)
Langston 1976
original and current combination Elliptio (Plesielliptio)
Unio stantoni
Langston 1976
Gastropoda - Viviparidae
Viviparus sp. Montfort 1810
Langston 1976
Ostracoda - Podocopida - Candonidae
Candona sp. Baird 1845
Langston 1976
Ostracoda - Podocopida - Cyprididae
Cypridea sp. Bosquet 1852
Langston 1976
see common names

Geography
Country:Canada State/province:Alberta
Coordinates: 49.9° North, 113.0° West (view map)
Paleocoordinates:57.7° North, 85.7° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
*Period:Late/Upper Cretaceous *Epoch:Senonian
*International age/stage:Early/Lower Maastrichtian
Key time interval:Early/Lower Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:St. Mary River
Stratigraphic resolution:bed
Stratigraphy comments: this collection and others from the area are from about 30 m of section
"probably" just above the Bearpaw Shale: Sloan and Russell 1974
Lithology and environment
Primary lithology:brown,gray silty claystone
Secondary lithology: sandstone
Lithology description: "gray to brown clay and siltstones interbedded with lighter-coloured fine sandstones"
Environment:fluvial-deltaic indet.
Geology comments: mainly "interdistributory flood-basin... [advancing] fluvial system... non-marine... periodic flooding of subaerial surfaces"
from a "shell bed" half way up the escarpment
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Disassociated major elements:some
Disassociated minor elements:many
Temporal resolution:snapshot
Collection methods and comments
Collection methods:selective quarrying,surface (float),mechanical,field collection
Collection size:11 specimens
Reason for describing collection:general faunal/floral analysis
Collectors:L. S. Russell, W. Langston Collection dates:1955, 1957
Taxonomic list comments:see Clemens et al. 1979; originally described by Sloan and Russell 1974
another form of Eodelphis may be present
Metadata
Database number:14502
Authorizer:J. Alroy, M. Carrano Enterer:J. Alroy, M. Carrano, K. Maguire
Modifier:P. Mannion Research group:marine invertebrate,vertebrate
Created:1993-02-18 00:00:00 Last modified:2023-08-07 09:50:52
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
13943.ETE W. Langston. 1975. The ceratopsian dinosaurs and associated lower vertebrates from the St. Mary River Formation (Maestrichtian) at Scabby Butte, southern Alberta. Canadian Journal of Earth Sciences 12:1576-1608 [M. Carrano/K. Maguire/M. Carrano]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
19636 J. Alroy. 2007. Synonymies and reidentifications of North American fossil vertebrates and so forth. [J. Alroy/J. Alroy]
78157 D. A. Eberth. 2015. Origins of dinosaur bonebeds in the Cretaceous of Alberta, Canada. Canadian Journal of Earth Sciences 52(8):655-681 [M. Carrano/M. Carrano]
1540 R. C. Fox and B. G. Naylor. 1986. A new species of Didelphodon Marsh (Marsupialia) from the Upper Cretaceous of Alberta, Canada: paleobiology and phylogeny. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 172(3):357-380 [J. Alroy/J. Alroy/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. 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]
7543 R. Holmes, M. W. Caldwell, and S. L. Cumbaa. 1999. A new specimen of Plioplatecarpus (Mosasauridae) from the lower Maastrichtian of Alberta: comments on allometry, functional morphology, and paleoecology. Canadian Journal of Earth Sciences 36(3):363-369 [J. Alroy/J. Alroy/J. Alroy]
2208 W. Langston. 1976. A Late Cretaceous vertebrate fauna from the St. Mary River Formation in western Canada. In C. S. Churcher (ed.), Athlon: Essays on Palaeontology in Honour of Loris Shano Russell 114-133 [J. Alroy/J. Alroy/M. Carrano]
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]