"The Mesozoic terminated in boreal spring" - fossils from the Tanis site in North Dakota - https://www.nature.com/articles/s41586-022-04446-1 https://www.nature

"The Mesozoic terminated in boreal spring" - fossils from the Tanis site in North Dakota - https://www.nature.com/articles/s41586-022-04446-1 https://www.nature.com/articles/s41586-022-04446-1