bank of Lethbridge Irrigation Canal (Cretaceous of Canada)

Where: Alberta, Canada (50.0° N, 113.4° W: paleocoordinates 57.8° N, 86.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: St. Mary River Formation, Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• "the possible stratigraphic interval between ichnite and skeleton could not have exceeded 8 feet."

• formation-level stratigraphic resolution

Environment/lithology: fluvial; micaceous sandstone and carbonaceous sandstone

• "fluviatile"
• sandstones with bones and ichnite differ slightly: former has more carbonaceous material; latter has more mica.

Size class: macrofossils

Preservation: trace, soft parts

Collected by Ledbetter in 1923, 1955; reposited in the GSC

Collection methods: surface (float),

• thrown out by canal excavation in 1923 but not brought to scientific attention until 1955

Primary reference: W. Langston. 1960. A hadrosaurian ichnite. National Museum of Canada Natural History Papers 4:1-9 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34743: authorized by Matthew Carrano, entered by Matthew Carrano on 19.09.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

• skeleton described as "a large hadrosaur, otherwise indeterminate, but possibly a lambeosaurine."
 Neornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
NMC 9487
? Lambeosaurinae indet. Parks 1923 lambeosaurine