It was the skeletons/shells of living animals and plants.
shells
You can find limestones by defeating monsters in the /join quarry area in AdventureQuest Worlds. Keep battling monsters until they drop the limestones as loot. Good luck!
limestones
Calcium carbonate
It could most certainly be found in sedimentary rock in areas of past volcanism, and is, in fact, found in some limestones.
yes
fossils
You can find limestones in AQWorlds by defeating monsters or completing quests in various areas of the game. Some specific locations where you can find limestones include /join bludrutbrawl, /join swordhaven, and /join battleunderb. Keep battling monsters and completing quests in these areas to collect the limestones you need.
because of weathering
no
Limestones and carbonates.
Limestone does not have a parent rock.