Ankylosaur-rich Site, RTMP BB 103 (Cretaceous of Canada)

Also known as microvertebrate, Bonebed 103, DPP

Where: Alberta, Canada (50.8° N, 111.3° W: paleocoordinates 58.1° N, 75.8° 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)" where positive numbers are above and negative below.

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; lenticular, fine, silty, carbonaceous sandstone

• Splay deposits typically comprise stacked sequences of interlaminated sands and siltstones separated by erosional surfaces, thus indicating repeated flooding and aggradation.
• BB 103 occurs in a 1.25 m thick contorted, silty very fine-to-fine-grained sandstone with small lenses of medium-grained sandstone, carbonaceous plant fragments and microfossils.

Size classes: macrofossils, mesofossils

Collected by E. Nicholls in 1990; 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 47795: authorized by Robin Whatley, entered by Robin Whatley on 01.03.2005, edited by Matthew Carrano, Philip Mannion and John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876 guitarfish
Gnathostomata
  -
Amphibia
 Salientia -
Hensonbatrachus kermiti4 Gardner and Brinkman 2015 frog
TMP 86.178.14 (ilium)
 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 -
Metatheria indet.2 Huxley 1880 metatherian
Reptilia
 Testudines - Chelydridae
Chelydridae indet. Swainson 1839 turtle
 Testudines - Trionychidae
Trionychinae indet.1 Gray 1825 softshell turtle
 Squamata -
 Crocodylia -
Leidyosuchus canadensis Lambe 1907 crocodilian
 Ornithischia -
 Ornithischia - Pachycephalosauridae
Pachycephalosauridae indet.2 Sternberg 1945 ornithischian
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
 Ornithischia -
cf. Thescelosaurus neglectus Gilmore 1913 ornithopod
 Theropoda -
 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
 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