One Tree Creek, RTMP BB 108 (Cretaceous of Canada)

Also known as microvertebrate, DPP, Bonebed 108

Where: Alberta, Canada (50.8° N, 111.6° W: paleocoordinates 58.1° N, 76.2° 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: channel lag; intraclastic 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.
• "BB 108 occurs at the base of a fining-upward 4-5 m thick lithosome comprising, in ascending order, 20 cm of fossilifoerous, intraclast-rich sandstone (BB 108), 50 cm of ripple-laminated, fine-to-medium-grained sandstone (Fig. 6F), 2 m of thinning-upward sets of large scale TCSS, and 1.5-2.5 m of IHS.... Vertebrate microfossils and mudstone intraclasts are poorly sorted within the basal intraclast deposit. Clast long axes are oriented subhorizontally and range up to 6 cm (Fig. 6G)." (Eberth, 1990)

Size classes: macrofossils, mesofossils

Collected by W. Marshall; reposited in the TMP

Collection methods: bulk, surface (float),

• Weight % fossil content 0.5935 kg fossil weight, fossil/sample = 0.35% (Table 3, Eberth 1990).

•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 47784: authorized by Robin Whatley, entered by Robin Whatley on 01.03.2005, edited by Matthew Carrano, Patricia Holroyd and John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876 guitarfish
Gnathostomata
  -
Amphibia
 Salientia -
 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
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 canadensis Lambe 1907 crocodilian
 Ornithischia -
 Ornithischia - Ceratopsidae
Ceratopsidae indet. Marsh 1888 ceratopsid
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
 Theropoda -
 Theropoda - Troodontidae
Troodon formosus Leidy 1856 maniraptoran
 Theropoda - Dromaeosauridae
Richardoestesia sp.2 Currie et al. 1990 maniraptoran
Saurornitholestes langstoni Sues 1978 maniraptoran
TMP 1987.036.0011
 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
misspelled as Kindlea
 Teleostei -
 Salmoniformes -
Esocoidea indet. Bleeker 1859
 Esociformes - Esocidae
Estesesox foxi4 Wilson et al. 1992
 Elopiformes - Phyllodontidae
Paralbula casei Estes 1969