Talk:Laramie Formation

Question about Laramie Formation and possible extention to Tyrannosaurus and Triceratops range
Currently, the Triceratops range is from 68 to 66 Ma. However, this page states that the age of the Laramie Formation is 69 to 68 Ma, and the Triceratops specimens in this formation are the oldest known. Could this extend the range of Triceratops and Tyrannosaurus, or are they only found at the upper part of the Laramie Formation?

"Skull of Triceratops from the Laramie Formation. This skull may be the oldest known for the genus"

"The palynomorphs indicate an early Maastrichtian age (68-69 mya), which is supported by magnetostratigraphy."

--Paleomario66 (talk) 16:54, 13 May 2018 (UTC)

It's been suggested that the Laramie Triceratops skull may not be a Triceratops at all, but rather an Eotriceratops or an Ojoceratops, due to the presence of a broad nostril flange. The Tyrannosaurus fossils, however, are still believed to belong to that genus. — Preceding unsigned comment added by 68.71.166.188 (talk) 06:51, 6 November 2021 (UTC)