What are the geologically youngest specimens of Tyrannosaurus rex

[Joseph Fossil]

Image Reconstruction of a Tyrannosaurus rex vs an Ankylosaur of the genus Denversaurus during the Late Cretaceous in what is now Western North America.

Image Credit: Paleoartist ThePaleoLad or atak_draws

https://x.com/atak_draws/status/1754264848228118920

 

 

I've recently been doing some research on what are the geologically youngest fossil remains discovered so far of the non-avian theropod dinosaur Tyrannosaurus rex. I've found some intriguing results but I nothing too concrete.

 

https://www.idigbio.org/portal/records/65ce5a67-ca48-41b6-9a64-0231f751fc8b

http://www.paleofile.com/Dinosaurs/Theropods/Tyrannosaurus.asp

https://www.theropoddatabase.com/Tyrannosauroidea.html

 

I would like to now ask this question to the forum. Well, actually two questions:

 

1. Have any Tyrannosaurus rex fossils been found in the following geologic members and formations:

 

Tullock Member, Fort Union Formation

Ludlow Member, Fort Union Formation

Upper Willow Creek Formation (not just lower section)

Kimbeto Member, Ojo Alamo Formation

Nacimiento Member, Ojo Alamo Formation

Ferris Formation (Puercan 1 sections)

Ravenscrag Formation (Puercan 1 sections)

Upper Coalspur Formation (Coalspur coal zone)

Scollard Formation

Battle Formation (BFm)

Denver Formation

 

2. What is the geologically youngest Tyrannosaurus rex fossils that have been so far discovered as of 2024?