Final answer:
Catullus composed poems in Latin that are important for their preservation of mythological details, contributing significantly to our understanding of ancient Roman religion and culture.
Step-by-step explanation:
Catullus composed several poems in Latin that preserve many mythological details that would've otherwise been lost. His work is not only important for its emotional depth and its break from the traditional notion of 'Vir', but also because it includes mythological themes and figures, such as the character of Attis in Poem 63, which provide valuable insights into ancient religious practices and beliefs. Catullus' Bedspread by Daisy Dunn and other historical texts highlight how Catullus' poetry captured the complexities of human emotion and played a critical role in the preservation of Roman mythology.