Sid's Site, RTMP BB 51 (Cretaceous of Canada)

Also known as DPP, Bonebed 51

Where: Alberta, Canada (50.7° N, 111.5° W: paleocoordinates 58.1° N, 76.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dinosaur Park Formation (Belly River Group), Late/Upper 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 meters above or below the disconformity (Fig. 2, Brinkman, 1990)."

• bed-level stratigraphic resolution

Environment/lithology: channel lag; lenticular, medium-grained, intraclastic, carbonaceous sandstone

• Characterized as in-channel, coastal plain. Facies association = Inclined heterolithic stratification (IHS) "comprising inclined decimeter-scale sandstone/mudstone interbeds (Thomas et al. 1987), has been interpreted as a lateral accretion deposit in fluvial (Wood, 1985) and tidally-influenced coastal-plain channels (Koster and Currie, 1987; Wood et al., 1988)." 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. (Eberth, 1990)
• "BB 51 occurs at the base of a 75 cm thick, 10 m wide, massive sandstone lens within a 3-4 m thick amalgamated IHS sequence (Fig. 7C). The lens erosionally overlies IHS beds and is itself abruptly overlain by IHS. The fossils are present within a thin interval of massive intraclast- and carbonaceous-rich, medium-grained sandstone at the base of the lens. Subhorizontal stratification is present and is delineated by carbonaceous laminae." (Eberth, 1990)

Size classes: macrofossils, mesofossils

Collected by L. J. Strong in 1985; 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 45262: authorized by John Alroy, entered by Robin Whatley on 15.10.2004, edited by Matthew Carrano, Patricia Holroyd, John Alroy and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray
 Acipenseriformes - Acipenseridae
Acipenser albertensis Lambe 1902 sturgeon
 Teleostei -
 Teleostei - Aspidorhynchidae
 Elopiformes - Phyllodontidae
Paralbula casei Estes 1969
 Albuliformes - Albulidae
Coriops amnicolus Estes 1969 bonefish
 Salmoniformes -
Esocoidea indet. Bleeker 1859
 Holostei -
Holostei "indet. A" Müller 1846
 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 -
Tyrrellbatrachus brinkmani4 Gardner 2015 frog
 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
 Theropoda -
 Avetheropoda - Dromaeosauridae
cf. Dromaeosauridae indet. Colbert and Russell 1969 coelurosaur
Saurornitholestes langstoni Sues 1978 coelurosaur
 Avetheropoda - Troodontidae
Troodon sp.2 Leidy 1856 coelurosaur
 Avetheropoda -
Paronychodon sp.2 Cope 1876 coelurosaur
? Aves indet.2 Linnaeus 1758 bird
 Ornithischia -
Ankylosauria indet. ornithischian
 Neornithischia - Pachycephalosauridae
Pachycephalosauridae indet.2 Sternberg 1945 ornithischian
 Neornithischia - Thescelosauridae
Thescelosaurus cf. neglectus Gilmore 1913 ornithischian
 Neornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
 Crocodylia -
Leidyosuchus canadensis Lambe 1907 crocodilian
 Squamata -
 Choristodera -
Champsosaurus natator Parks 1933 choristodere
Mammalia indet. Linnaeus 1758 mammal
 Theriiformes -
Metatheria indet.2 Huxley 1880 metatherian
 Allotheria -
Multituberculata indet.2 Cope 1884 multituberculate