This monster is the older version of "Reactan, Dragon Ruler of Pebbles". This is supported by the fact this monster has two cut-off horns while "Reactan" still retains its own.
Redox is an abbreviation of the term Reduction Oxidation, which is a general term for any chemical reaction that results in an atoms oxidation state changing.
Both are EARTH monsters with similar Summoning conditions, effects that activate when they are affected by card effects in a certain way (being banished by effect for "Redox", being destroyed by effect for "Lithosazim") to replace themselves with another monster, and have effects relating to EARTH monsters.