Pre-release data. All data is from the closed beta and community sources. It is incomplete and will change before and after launch.

Anima Codex
Handbook

Petrilog

Exploration

Petrilogs are Nexus Anima of the Stasis category, found scattered around town. Collecting Petrilogs in their different poses earns special rewards, so it's worth seeking out the various forms they appear in.

Petrilog

Confidence: unconfirmed · Source: the in-game Handbook (via the Fandom wiki). Pre-release; may change.