Bill's Site, RTMP BB 70 (Cretaceous of Canada)

Also known as microvertebrate, DPP, Bonebed 70

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: 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 meteres above or below the disconformity (Fig. 2, Brinkman, 1990)" where positive numbers are above and negative below.

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; fine-grained, medium sandstone and carbonaceous siltstone

• Splay deposits typically comprise stacked sequences of interlaminated sands and siltstones separated by erosional surfaces, thus indicating repeated flooding and aggradation.
• BB 71 microfossils occur in a highly contorted, sandy siltstone sheet within an overall horizontally laminated, 2 m thick, fining-upward sedimentary sequence. Microfossils are concentrated in the lowermost 40 cm, in a sequence which consists of alternating fine-to-medium-grained sandstone laminae and coaly siltstone laminae.

Size classes: macrofossils, mesofossils

Collected by L. J. Strong in 1986; 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 47807: authorized by Robin Whatley, entered by Robin Whatley on 02.03.2005, edited by John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

• Weight % fossil content 0.1600 kg fossil weight, fossil/sample = 0.09% (Table 3, Eberth 1990).
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876 guitarfish
Gnathostomata
  -
Osteichthyes
 Acipenseriformes - Acipenseridae
Acipenser albertensis Lambe 1902 sturgeon
 Acipenseriformes - Polyodontidae
Polyodontidae indet. Bonaparte 1838 paddlefish
Amphibia
 Salientia -
 Proteida - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961 salamander
 Caudata - Urodela
Scapherpeton tectum Cope 1876 salamander
Mammalia
  -
Mammalia indet. Linnaeus 1758 mammal
Reptilia
 Testudinata - Baenidae
Baenidae indet. Cope 1882 turtle
 Testudines - Trionychidae
Trionychinae indet. Gray 1825 softshell turtle
 Squamata -
 Crocodylia -
Leidyosuchus canadensis Lambe 1907 crocodilian
 Ornithischia -
 Ornithischia - Ceratopsidae
Ceratopsidae indet. Marsh 1888 ceratopsid
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
 Theropoda - Troodontidae
Troodon formosus Leidy 1856 maniraptoran
 Theropoda - Dromaeosauridae
Saurornitholestes langstoni Sues 1978 maniraptoran
 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 -
 Elopiformes - Phyllodontidae
Paralbula casei Estes 1969
 Albuliformes - Albulidae
Coriops amnicolus Estes 1969 bonefish
 Aspidorhynchiformes - Aspidorhynchidae