valvatida造句

• Several groups of starfish, including Valvatida and Forcipulatida, possess pedicellariae.
• He transferred Acanthasteridae from the Spinulosida to the Valvatida and assigned it a position near to the Oreasteridae, from which it appears to be derived.
• There are seven extant orders, Brisingida, Forcipulatida, Notomyotida, Paxillosida, Spinulosida, Valvatida and Velatida and two extinct ones, Calliasterellidae and Trichasteropsida.
• They are not to be confused with species in the genus " Archaster ", which share similar shape and life habits, but belong to the family Archasteridae ( ordrer Valvatida ).