Mesozoic Diary

[No female lead + no romance + no spiritual qi revival + no System + no saintly protagonist + dinosaurs + prehistoric life + survival in the early stages, major battles in the middle, and the unknown in the later stages]

The general idea is that the protagonist comes to the Maastrichtian Age of the Mesozoic Era for money, then struggles to survive for a month.

He is then swept up in a war between prehistoric creatures. (Non-dinosaur creatures are just bit players.)

The war is led by two prominent families from the Cretaceous Period.

This book includes some speculation about the classification and body size of prehistoric creatures. Please forgive any mistakes, since most fossils are incomplete.