The word "Hypoptilums" has an unusual spelling, possibly making it difficult to pronounce. However, with the use of the International Phonetic Alphabet (IPA), it's not so intimidating. The first syllable, "hypo," is pronounced with a short "i" sound, as in "hip." The second syllable, "p-uh," has a schwa sound, similar to the "u" in "up." The final syllable, "-t-ih-lums," is pronounced with a "t" sound followed by a short "i" sound, and "lums" rhymes with "bums." Therefore, Hypoptilums is pronounced as hi-po-puh-ti-lums.