RTMP BB 54 (Cretaceous of Canada)

Also known as microvertebrate, Bonebed 54, DPP

Where: Alberta, Canada (50.8° N, 111.6° 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: fine channel fill; silty, carbonaceous sandstone and mudstone

• Muddy channel-fill - abandoned channel
• BB 54 occurs as a 50 cm thick coaly, horizontally-laminated deposit, comprising three poorly-to-moderately-sorted, normally graded sequences. Sequences are silty sandstone, except for siltstone/mudstone seqence. It is not obvious if or where fossils are concentrated.

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. 1986. Microvertebrate sites: progress and prospectus. In B. G. Naylor (ed.), Field Trip Guidebook to Dinosaur Provincial Park, 2 June 1986. Dinosaur Systematics Symposium, Tyrrell Museum of Palaeontology, Drumheller, Alberta 24-37 [M. Carrano/M. Carrano]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 47814: authorized by Robin Whatley, entered by Robin Whatley on 02.03.2005, edited by Matthew Carrano and John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876 guitarfish
Gnathostomata
  -
Osteichthyes
 Acipenseriformes - Acipenseridae
Acipenser albertensis2 Lambe 1902 sturgeon
Amphibia
 Salientia -
 Proteida - Batrachosauroididae
Opisthotriton kayi2 Auffenberg 1961 salamander
 Caudata - Urodela
Scapherpeton tectum2 Cope 1876 salamander
Mammalia
  -
Mammalia indet.2 Linnaeus 1758 mammal
 Allotheria -
Multituberculata indet.3 Cope 1884 multituberculate
 Theriamorpha -
Metatheria indet.3 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 canadensis2 Lambe 1907 crocodilian
 Ornithischia -
 Ornithischia - Ceratopsidae
Ceratopsidae indet.2 Marsh 1888 ceratopsid
 Ornithischia - Hadrosauridae
Hadrosauridae indet.2 Cope 1869 hadrosaurid
 Theropoda - Dromaeosauridae
cf. Dromaeosauridae indet.2 Colbert and Russell 1969 maniraptoran
Richardoestesia sp.3 Currie et al. 1990 maniraptoran
Saurornitholestes langstoni2 Sues 1978 maniraptoran
 Theropoda -
Paronychodon sp.3 Cope 1876 maniraptoran
 Choristodera -
Champsosaurus natator2 Parks 1933 choristodere
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843 gar
may be same as Atractosteus occidentalis in Table 1?
 Amiiformes - Amiidae
"Kindleia sp." = Cyclurus2
"Kindleia sp." = Cyclurus2 Agassiz 1839 bowfin
 Teleostei -
 Salmoniformes -
Esocoidea indet.2 Bleeker 1859
 Elopiformes - Phyllodontidae
Paralbula casei2 Estes 1969
 Albuliformes - Albulidae
Coriops amnicolus2 Estes 1969 bonefish
 Aspidorhynchiformes - Aspidorhynchidae