Scabby Butte, Site 3 (Cretaceous of Canada)

Where: Alberta, Canada (49.9° N, 113.0° W: paleocoordinates 57.7° N, 85.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: St. Mary River Formation, Edmontonian (70.6 - 66.0 Ma)

• this collection and others from the area are from about 30 m of section

•"probably" just above the Bearpaw Shale: Sloan and Russell 1974

• bed-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; brown, gray, silty claystone and sandstone

• mainly "interdistributory flood-basin... [advancing] fluvial system... non-marine... periodic flooding of subaerial surfaces"

•from a "shell bed" half way up the escarpment

• "gray to brown clay and siltstones interbedded with lighter-coloured fine sandstones"

Size classes: macrofossils, mesofossils

Collected by L. S. Russell, W. Langston in 1955, 1957

Collection methods: quarrying, surface (float), mechanical,

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14502: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Kaitlin Maguire and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• see Clemens et al. 1979; originally described by Sloan and Russell 1974

•another form of Eodelphis may be present

Ostracoda
 Podocopida - Candonidae
Candona sp.5 Baird 1845 ostracod
 Podocopida - Cyprididae
Cypridea sp.5 Bosquet 1852 ostracod
Bivalvia
 Pholadida - Corbulidae
 Unionida - Unionidae
Unio stantoni5, "cf. Plesielliptio sp." = Elliptio (Plesielliptio)5
Unio stantoni5 freshwater mussel
"cf. Plesielliptio sp." = Elliptio (Plesielliptio)5 Russell 1934 freshwater mussel
Gastropoda
 Architaenioglossa - Viviparidae
Viviparus sp.5 Montfort 1810 snail
Chondrichthyes
 Squatiniformes - Squatinidae
Squatina sp. Dumeril 1806 angel shark
NMC 21875, 21877
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray
NMC 10672 (several hundred teeth), 10673 (ca. 30 scales)
 Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964 wobbegong
NMC 21869, 21876, 71868
Actinopteri
 Teleostei - Aspidorhynchidae
Belonostomus cf. longirostris Lambe 1902
NMC 21863
 Elopiformes - Phyllodontidae
Paralbula casei Estes 1969
NMC 21867
 Acanthomorphata - Sciaenidae
Platacodon cf. nanus Marsh 1889
NMC 21874
 Amiiformes - Amiidae
Amia cf. fragosa Jordan 1927 bowfin
NMC 10677
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. de Lacep├Ęde 1803 gar
NMC 10679
Osteichthyes
 Temnospondyli - Albanerpetontidae
Albanerpetontidae indet.3 Fox and Naylor 1982 tetrapod
UALVP 40044
 Proteida - Batrachosauroididae
Opisthotriton kayi4 Auffenberg 1961 tetrapod
NMC 21865-66
Reptilia
 Avetheropoda - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906 tyrannosaurid
NMC 10675
 Avetheropoda - Ornithomimidae
Ornithomimidae indet. Marsh 1890 ornithomimid
NMC 10653
 Avetheropoda - Coeluridae
? Coeluridae indet. Marsh 1881 coelurid
NMC 10674
 Ornithischia - Nodosauridae
Edmontonia cf. longiceps Sternberg 1928 ornithischian
NMC 21864
 Neornithischia - Hadrosauridae
Edmontosaurus sp. Lambe 1917 hadrosaurine
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
 Loricata -
Crocodylia indet.2 crocodilian
NMC 10656
 Crocodylia - Crocodylidae
Crocodylidae indet. Cuvier 1807 crocodile
NMC 10676
 Squamata - Mosasauridae
Plioplatecarpus sp. Dollo 1882 mosasaur
NMC 21830
 Choristodera -
Champsosaurus sp. Cope 1876 choristodere
NMC 10654
Mammalia
 Cimolesta - Cimolestidae
Cimolestes sp.6 Marsh 1889 eutherian
 Leptictida - Gypsonictopidae
Gypsonictops sp.6 Simpson 1927 eutherian
 Theriiformes - Peradectidae
"Pediomys cf. krejcii" = Leptalestes krejcii6, "Pediomys cf. cooki" = Leptalestes cooki6
"Pediomys cf. krejcii" = Leptalestes krejcii6 Clemens 1966 metatherian
"Pediomys cf. cooki" = Leptalestes cooki6 Clemens 1966 metatherian
 Didelphimorphia - Alphadontidae
Turgidodon ? rhaister1 Clemens 1966 marsupial
 Didelphimorphia - Stagodontidae
Didelphodon sp.6 Marsh 1889 marsupial
ref 1540: said to be a new species
Eodelphis ? cutleri6 Woodward 1916 marsupial
 Multituberculata - Cimolomyidae
Meniscoessus conquistus6 Cope 1882 multituberculate
Meniscoessus robustus6 Marsh 1889 multituberculate
Cimolomys gracilis6 Marsh 1889 multituberculate
 Multituberculata - Neoplagiaulacidae
Mesodma cf. thompsoni6 Clemens 1964 multituberculate
 Multituberculata - Cimolodontidae
Cimolodon nitidus6 Marsh 1889 multituberculate