Cambroraster

300px|left|thumb|Reconstruction of the head region of Cambroraster falcatus. A: Dorsal view, B: Ventral view, Ey: Eye, Fa: Frontal appendage, He:H-element, Bp: Bilobate posterior region, Lp: Posterolateral process, Oc: Oral cone, Pe: P-element, Pn: P-element neck Cambroraster is an extinct monotypic genus of hurdiid radiodont, dating to the middle Cambrian, and represented by the single formally described species Cambroraster falcatus. Hundreds of specimens were found in the Burgess Shale, and described in 2019. A large animal (for its era) at up to (but not as long as Titanokorys at ), it is characterized by a significantly enlarged horseshoe-shaped dorsal carapace (H-element), and presumably fed by sifting through the sediment with its well-developed tooth plates (oral cone) and short frontal appendages with hooked spines. Nicknamed the "spaceship" fossil when first found, for the way its dorsal carapace resembles the fictional Millennium Falcon, the specific epithet falcatus in its scientific name is a nod to that resemblance.

File:20200329 Cambroraster falcatus.png|Reconstruction File:20210516 Radiodonta head sclerites Cambroraster falcatus.png|Head sclerites File:20191229 Radiodonta frontal appendage Cambroraster falcatus.png|Frontal appendage File:20210813 Cambroraster falcatus frontal appendage mobility.gif|Movement range of the frontal appendage