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

 Unionida - Unionidae
Unionidae indet. Rafinesque 1820 freshwater mussel
Gastropoda indet. Cuvier 1797 snail
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray
 Teleostei -
 Elopiformes - Phyllodontidae
Paralbula casei Estes 1969
 Albuliformes - Albulidae
Coriops amnicolus Estes 1969 bonefish
 Salmoniformes -
Esocoidea indet. Bleeker 1859
 Amiiformes - Amiidae
"Kindleia sp." = Cyclurus
"Kindleia sp." = Cyclurus Agassiz 1843 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843 gar
may be same as Atractosteus occidentalis in Table 1?
 Salientia -
 Proteida - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961 salamander
 Caudata - Urodela
Scapherpeton tectum Cope 1876 salamander
 Testudines - Trionychidae
Trionychinae indet.1 softshell turtle
 Testudines - Baenidae
Baenidae indet. Cope 1882 turtle
 Testudines - Panchelydridae
 Avetheropoda - Dromaeosauridae
cf. Dromaeosauridae indet. Colbert and Russell 1969 coelurosaur
Richardoestesia sp.2 Currie et al. 1990 coelurosaur
Saurornitholestes langstoni Sues 1978 coelurosaur
Dromaeosaurus sp.2 Matthew and Brown 1922 coelurosaur
 Avetheropoda - Troodontidae
Troodon formosus Leidy 1856 coelurosaur
 Avetheropoda -
Paronychodon sp.2 Cope 1876 coelurosaur
? Aves indet.2 Linnaeus 1758 bird
 Avetheropoda - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906 tyrannosaurid
 Saurischia - Elongatoolithidae
Porituberoolithus warnerensis4 Zelenitsky et al. 1996 theropod
Continuoolithus canadensis4 Zelenitsky et al. 1996 theropod
 Ornithischia -
Ankylosauria indet. ornithischian
 Neornithischia - Pachycephalosauridae
Pachycephalosauridae indet.2 Sternberg 1945 ornithischian
 Neornithischia - Ceratopsidae
Ceratopsidae indet.2 Marsh 1888 ceratopsid
 Neornithischia - Thescelosauridae
Thescelosaurus cf. neglectus Gilmore 1913 ornithischian
 Neornithischia - Spheroolithidae
Spheroolithus albertensis4 Zelenitsky and Hills 1997 bird foot dinosaur
 Neornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
 Crocodylia -
Leidyosuchus canadensis Lambe 1907 crocodilian
 Loricata - Krokolithidae
Krokolithes sp.4 Hirsch 1985 crocodile eggshell
 Squamata -
 Choristodera -
Champsosaurus natator Parks 1933 choristodere
Mammalia indet. Linnaeus 1758 mammal
 Tribosphenida -
Eutheria indet.2 eutherian
 Theriiformes -
Metatheria indet.2 Huxley 1880 metatherian
 Allotheria -
Multituberculata indet.2 Cope 1884 multituberculate