RTMP BB 105 (Cretaceous of Canada)

Also known as Dave's II, Bonebed 105, DPP

Where: Alberta, Canada (50.8° N, 111.5° W: paleocoordinates 58.1° N, 76.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Oldman Formation (Belly River Group), Middle Campanian (83.5 - 70.6 Ma)

• Microvertebrate sites of Brinkman (1990) are "...placed in stratigraphic sequence by reference to a disconformity located about sixty meters below the base of the Lethbridge Coal (Eberth, 1990). The stratigraphic position of each site is expressed in terms of meteres above or below the disconformity (Fig. 2, Brinkman, 1990)."

• bed-level stratigraphic resolution

Environment/lithology: "channel"; tabular, lag, pebbly, intraclastic, silty sandstone

• Characterized as in-channel, coastal plain. Facies association = trough cross-stratified sandstones. Upper flow-regime, tractional plane beds fromed during flood stage. Lag deposits, or plane bed deposits that show horizontal-planar stratification, bed thicknesses exceeding single pebble diameters, normal graded or fining upward texture, and matrix-supported clasts. The disconformity in southern Alberta records a Cordilleran uplift event west of the Park.
• "Microfossils occur in two stacked, poorly-sorted and graded tabular units of silty sandstone...the lowermost unit is 75 cm thick. Well-rounded, platy to oval mudstones intraclasts, some as large as 7 cm in their maximum dimensions, are abundant throughout the unit...Disarticulated unionid valves and gastropod shells are present. The larger unionids are rare and are restricted to the lower portion of the unit while the gastropods are abundant throughout the deposit." (Eberth 1990)

Size classes: macrofossils, mesofossils

Collected by D. Brinkman; reposited in the TMP

Collection methods: bulk, surface (float), sieve,

• Screenwashed elements were collected using a screen with 9 openings per centimeter.

Primary reference: D. B. Brinkman. 1990. Paleontology of the Judith River Formation (Campanian) of Dinosaur National Park, Alberta, Canada: evidence from vertebrate microfossil locality. Palaeogeography, Palaeoclimatology, Palaeoecology 78:37-54 [A. Behrensmeyer/A. Behrensmeyer/M. Carrano]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 45240: authorized by John Alroy, entered by Robin Whatley on 14.10.2004, edited by Matthew Carrano and John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Bivalvia
 Unionida - Unionidae
Unionidae indet. Rafinesque 1820 freshwater mussel
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876 guitarfish
Gnathostomata
  -
Amphibia
 Salientia -
 Proteida - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961 salamander
 Caudata - Urodela
Scapherpeton tectum Cope 1876 salamander
Mammalia
  -
Mammalia indet. Linnaeus 1758 mammal
 Allotheria -
Multituberculata indet.2 Cope 1884 multituberculate
 Theriamorpha -
Eutheria indet.2 eutherian
Metatheria indet.2 Huxley 1880 metatherian
Reptilia
 Testudinata - Baenidae
Baenidae indet. Cope 1882 turtle
 Testudines - Chelydridae
Chelydridae indet. Swainson 1839 turtle
 Testudines - Trionychidae
Trionychinae indet.1 Gray 1825 softshell turtle
 Squamata -
 Crocodylia -
Leidyosuchus canadensis Lambe 1907 crocodilian
 Loricata - Krokolithidae
Krokolithes sp.4 Hirsch 1985 crocodile eggshell
 Ornithischia -
 Ornithischia - Pachycephalosauridae
Pachycephalosauridae indet.2 Sternberg 1945 ornithischian
 Ornithischia - Ceratopsidae
Ceratopsidae indet.2 Marsh 1888 ceratopsid
 Ornithischia - Spheroolithidae
Spheroolithus albertensis4 Zelenitsky and Hills 1997 ornithopod
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
 Ornithischia -
Thescelosaurus cf. neglectus Gilmore 1913 ornithopod
 Theropoda - Troodontidae
Troodon formosus Leidy 1856 maniraptoran
 Theropoda - Dromaeosauridae
cf. Dromaeosauridae indet. Colbert and Russell 1969 maniraptoran
Richardoestesia sp.2 Currie et al. 1990 maniraptoran
Saurornitholestes langstoni Sues 1978 maniraptoran
Dromaeosaurus sp.2 Matthew and Brown 1922 maniraptoran
 Theropoda -
Paronychodon sp.2 Cope 1876 maniraptoran
Aves
  -
? Aves indet.2 Linnaeus 1758 bird
Reptilia
 Theropoda - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906 tyrannosaurid
 Theropoda - Elongatoolithidae
Continuoolithus canadensis4 Zelenitsky et al. 1996 theropod
Porituberoolithus warnerensis4 Zelenitsky et al. 1996 theropod
 Choristodera -
Champsosaurus natator Parks 1933 choristodere
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843 gar
may be same as Atractosteus occidentalis in Table 1?
 Amiiformes - Amiidae
"Kindleia sp." = Cyclurus
"Kindleia sp." = Cyclurus Agassiz 1839 bowfin
 Teleostei -
 Salmoniformes -
Esocoidea indet. Bleeker 1859
 Elopiformes - Phyllodontidae
Paralbula casei Estes 1969
 Albuliformes - Albulidae
Coriops amnicolus Estes 1969 bonefish