Apollonius of Perga
Pappus states that the spiral of Archimedes was discovered by Conon. Apollonius of Perga reported that Conon worked on conic sections, and his work became the basis for Apollonius' fourth book of the "Conics". Apollonius further reports that Conon sent some of his work to Thrasydaeus, but that it was incorrect. Since this work has not survived it is impossible to assess the accuracy of Apollonius' comment.