Caeruleum miraculum was named by Huang (2024). Its type specimen is BMM 3770A/B, a skeleton (A complete eel-like slender body specimen, pre- serving the head, body and tail.), and it is a compression fossil. Its type locality is Naizi Mountain, which is in a Cretaceous delta plain shale/sandstone in the Jiufotang Formation of China. It is the type species of Caeruleum.