Cascoplecia
Cascoplecia insolitis, rarely known as the unicorn fly, is an extinct dipteran that lived in the Early Cretaceous. The type specimen was found in Burmese amber. George Poinar, Jr., who described the fossil, placed the genus into a new family Cascopleciidae. One of the defining characteristics of "Cascoplecia" is the presence of three ocelli raised on an extended, horn-like protuberance. The distinctiveness of the family was questioned by other authors, and the genus has been subsequently transferred to the family Bibionidae.