Spoilers for anyone who hasn't read the book.

Upon finishing Archosauria, I concluded reading a unique and fresh take on the "genetically engineered dinosaurs in a theme park setting" concept. This was done with unique depictions of prehistoric life in a zoo setting, the character expansion carried on from Origins, and the veterinary science present throughout the book. On the topic of Archosauria's menagerie, it blows Jurassic Park movies out of the water with a diverse array of dinosaurs, pterosaurs, other reptiles, fish, invertebrates, and an amphibian. The depictions are well-informed by palaeontological science, made clear by their up-to-date appearances (e.g. feathered theropods) and the behaviours exhibited based on extant relatives (e.g. mimicry in Pectinodon) or hypothesised from fossils (e.g. Concavenator with wing feathers).
As for the characters, those that weren't explored very much in Origins such as Nalani get compelling backstories and those who were explored in Origins are carried over greatly in Archosauria, particularly the lead Dr. Scott Harmon and his daughter Erica. With other characters come emotional backstories like Ethan Barnes' motivation for building Archosauria being his dinosaur-obsessed son, Jason, who died before Origins takes place. Another character I was happy to see explored was Dr. Bai and how he is the way he is in both books.
The veterinary science of Origins always kept me hooked to the scenes and I was very intrigued by how the science was used in Archosauria. For example, the biopsy of an adult Dilophosaurus to learn more about their venom-shooting abilities was particularly interesting. Scenes like that are very interesting in that they mix veterinary science with scientific inferences and speculation and never failed to keep me engaged.
As for the future of Primordial Resurgence, I'm very excited to see what Dr Philip Fico comes up with next and will be sure to purchase book 3 when it's published.