Willow Creek
Description
Source: Wikipédia
The Willow Creek Formation is a stratigraphic unit of Late Cretaceous to Early Paleocene age in the Western Canada Sedimentary Basin of southwestern Alberta. It was first described by George Mercer Dawson in 1883 along the Willow Creek, a tributary of the Oldman River. Williams and Dyer defined the type section in 1930 at the mouth of Willow Creek, east of Fort Macleod.
The formation straddles the Cretaceous-Paleogene (K-Pg) boundary, which divides it into an upper, Early Paleocene member and a lower, Late Cretaceous member. Dinosaur remains are among the fossils that have been recovered from the Late Cretaceous portion.
Découvertes
Source: The Paleobiology Database
Site(s) correspondant(s) à cette formation: 4
Big Nose Hill (ROM) : Montana - Glacier 16682 54631 59351 T31N, R9W, sec 19, SW 1/4; in Two Medicine Valley, 12 mi SE of Browning, near high ridge (Big Nose Hill) dissected by a NW-trending valley
Cardston egg site : Alberta - ? 14221 near Cardston, Alberta- Cowley : Alberta - ? 14221 33415 33416 52782 sec 27, T7N, R30W, 4th meridian; near Cowley
- T. rex Coulee, Crowsnest Pass : Alberta - ? 17477 51520 51521 52782 82296 Corwsnest Pass; sec. 32, T 7 N, R 1 W, 5th meridian. near Cowley, approx. 1.87 km W of the
K-Pg boundary locality, approx. coordinates of the T. rex locality, now known as the “T. rex Coulee,” are 49°36’12.98"N; 114°5’33.92"W. Orig. property of Rener's Farms, now Crown Land.
Publication(s)
La base comprend 11 publication(s).
Source: The Paleobiology Database
- ↑1 2 L. S. Russell. 1968. A dinosaur bone from Willow Creek beds in Montana. Canadian Journal of Earth Sciences 5:327-329 (https://doi.org/10.1139/e68-034)
- ↑1 J. R. Horner. 1989. The Mesozoic terrestrial ecosystems of Montana. Geologic Resources of Montana. 1989 Montana Geological Society Field Conference and Symposium Guidebook
- ↑1 T. M. Lehman. 1987. Late Maastrichtian paleoenvironments and dinosaur biogeography in the Western Interior of North America. Palaeogeography, Palaeoclimatology, Palaeoecology 60:189-217 (https://doi.org/10.1016/0031-0182(87)90032-0)
- ↑1 2 3 4 K. Carpenter and K. Alf. 1994. Global distribution of dinosaur eggs, nests, and babies. Dinosaur Eggs and Babies, Cambridge University Press, Cambridge
- ↑1 P. J. Makovicky. 2010. A redescription of the Montanoceratops cerorhynchus holotype with a review of referred material. New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Indiana University Press, Bloomington
- ↑1 T. Miyashita, P. J. Currie, and B. J. Chinnery-Allgeier. 2010. First basal neoceratopsian from the Oldman Formation (Belly River Group), southern Alberta. New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Indiana University Press, Bloomington
- ↑1 2 M. J. Ryan and A. P. Russell. 2001. Dinosaurs of Alberta (exclusive of Aves). Mesozoic Vertebrate Life
- ↑1 2 R. E. Molnar. 1991. The cranial morphology of Tyrannosaurus rex. Palaeontographica Abteilung A 217(4-6):137-176
- ↑1 J. R. Horner and D. Lessem. 1993. The Complete T. rex (https://doi.org/10.1093/nq/40-4-560)
- ↑1 M. T. Carrano. 2014. Fossil Vertebrate Collections, Royal Tyrrell Museum of Palaeontology
- ↑1 G. S. Paul, W. S. Persons, and J. Van Raalte. 2022. The tyrant lizard king, queen and emperor: multiple lines of morphological and stratigraphic evidence support subtle evolution and probable speciation within the North American genus Tyrannosaurus. Evolutionary Biology 49(2):156-179 (https://doi.org/10.1007/s11692-022-09561-5)
Galerie d'image
Pas d'image.