Where: Alberta, Canada (52.0° N, 112.9° W: paleocoordinates 59.8° N, 83.8° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Scollard Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• about 1–2 m above the base of the formation, just above the Kneehills Tuff in the Battle Formation, dated to 66.5-67Ma from K/Ar by Eberth 1997.
• bed-level stratigraphic resolution
Environment/lithology: "channel"; sandstone and mudstone
•a paleochannel composed of alternating sandstone and mudstone
•layers. These alternating layers are interpreted as the result of
•periodic alternation between active channel and stagnant waters
•in the channel (pers. comm., Dave Eberth and Dennis Braman,
•June 2012). The locality may have been a cut-off ox bow in which
•flow was seasonal and ponded water was stagnant (pers. comm.,
•Dave Eberth and Dennis Braman, June 2012). Articulated fish
•are present in both the sandstone and mudstone layers,
Size classes: macrofossils, mesofossils
Preservation: replaced with hematite
Collected by Showalter, TMP in 2008; reposited in the TMP
Collection methods: quarrying, sieve,
Primary reference: D. A. Eberth. 2015. Origins of dinosaur bonebeds in the Cretaceous of Alberta, Canada. Canadian Journal of Earth Sciences 52(8):655-681 [M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 190346: authorized by Patricia Holroyd, entered by Patricia Holroyd on 05.12.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
| Actinopteri | |
|
Semionotiformes indet. Arambourg and Bertin 1958 | |
Wilsonichthys aridinsulensis n. gen. n. sp.
Wilsonichthys aridinsulensis n. gen. n. sp. Murray et al. 2016 | |