= Rex Matriarchs Overview = [https://img.pvme.io/images/k1pBa3wBhP.png Guide illustration] ​ == Introduction == ⬥ The Rex Matriarchs are four dinosaur bosses found on Anachronia ⬥ Each Matriarch has its own attack style, weakness and mechanics ⬥ While the Matriarchs share a boss instance, only 3/4 share an arena ‎ ‎ ‎ ‎• Osseous' arena is accessed via teleportation device near the entrance, only after completion of the [https://runescape.wiki/w/Osseous_Rex_quest Osseous Rex quest] ​ == The 4 Matriarchs == === orikalka Orikalka === ⬥ Primarily attacks with melee ⬥ Vulnerable to magic (+27% hit chance with fire spells) === rathis Rathis === ⬥ Primarily attacks with range and poisonicon ⬥ Vulnerable to melee (+27% hit chance with stab) === pthentraken Pthentraken === ⬥ Primarily attacks with magic ⬥ Vulnerable to range (+27% hit chance with arrows) === osseoushead Osseous === ⬥ Primarily attacks with ranged ⬥ Vulnerable to necromancy ​ == Guide Links == ⬥ '''Basic Guides & Mechanics''' ‎ ‎ ‎ ‎• Referenced guide unavailable in this snapshot ‎ ‎ ‎ ‎• Referenced guide unavailable in this snapshot ‎ ‎ ‎ ‎• Referenced guide unavailable in this snapshot ‎ ‎ ‎ ‎• [https://pvme.io/pvme-guides/rs3-full-boss-guides/rex-matriarchs/osseous-basic/ Osseous Basic] ​ ⬥ '''Rotations''' ‎ ‎ ‎ ‎• Referenced guide unavailable in this snapshot ​ ⬥ '''AFK & Low-effort''' ‎ ‎ ‎ ‎• [https://pvme.io/pvme-guides/afk/afk-orikalka/ AFK Orikalka] ‎ ‎ ‎ ‎• [https://pvme.io/pvme-guides/afk/afk-rathis/ AFK Rathis] ‎ ‎ ‎ ‎• [https://pvme.io/pvme-guides/afk/afk-osseous/ AFK Osseous] ‎ ‎ ‎ ‎• Referenced guide unavailable in this snapshot ‎ ‎ ‎ ‎• [https://pvme.io/pvme-guides/afk/low-effort-pthentraken/ Low Effort Pthentraken] ​ == Source and attribution == Source: [https://pvme.io/pvme-guides/rs3-full-boss-guides/rex-matriarchs/rex-matriarchs-overview/ Rex Matriarchs Overview], by PvME contributors. Licence: [https://creativecommons.org/licenses/by-nc-sa/4.0/ CC BY-NC-SA 4.0]. Do not silently relicense. Captured 2026-11-10T14:26:13Z. Source HTML SHA-256: e6bfd4fdb024975264bb7f33db016458f570ea178d8887db47ae534e42e101e4. Changes: Navigation and typography adapted. Original sanitized source HTML and its text hash are retained separately. Source channel and message references are repaired using the pinned guide repository and public directory/identity evidence; navigation wording is adapted for the web. Every change is recorded in the reference repair ledger. Unverified destinations and contributor names remain explicitly unavailable. Legitimate external community and attribution links are preserved and labeled. Original media is embedded from providers; media rights are separate from guide-text rights. Layout converted to basic wikitext. Rich structures require manual review. Game-version accuracy is unverified; consult the current upstream guide.