"Evoltile", known as "Evold" (エヴォルド Evorudo) in the OCG is an "Evol" sub-archetype consisting of FIREReptilemonsters whose effects support "Evolsaurs". They are the first stage in evolution where they will evolve into Dinosaur "Evolsaurs". Their English names are a combination of evolution and reptile.
Their pictures have some sort of molecule in the background.
It is likely an artistic imagining of a nucleic acid, since it bears resemblance to bases and a sugar phosphate-like backbone. Interestingly, the bases don't correspond to any natural bases, the phosphate-like groups are not true phsophates and the many of the Nitrogen atoms have too many bonds, and would not be stable structures.
Their pictures also have a depiction of the evolution of man in the lower right corner.
