Platanaster
# Platanaster

Platanaster ('plate star') is an extinct genus of sea stars.

## Taxonomy

†Palasteriscidae

* †Urasterellinae
   * †Cnemidactis
      * †C. girvanensis
   * †Urasterella
      * †U. asperrimus
* †Palasteriscinae
   * †Lanthanaster
      * †L. cruciformis
   * †Platanaster
      * †P. ordovicus
   * †Baliactis
      * †B. ordovicus
