Two different species belong in the same class what other levels of classification do they have in common

Kingdom and Phylum

(answer is short)

Answer: Domain, Kingdom and Phylum

The order of classification is: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

If two different species belong to same class they will share what is before the class in classification that is Domain, kingdom and Phylum. Since the species are different they will definately share "species" in the classification. Whatever they both will share in order, family, genus depend on their similar characteristic.