Words to Describe frustules

How frustules often is described ("________ frustules")

• empty
• broken
• striated
• smaller
• single
• dead
• diatom
• prepared
• contiguous
• formed
• shaped
• discoid
• total
• silicified
• few
• delicate
• free
• thin
• new
• larger
• like
• adjacent
• siliceous
• opaline
• large
• numerous
• fossil
• sporangial
• individual
• silicious
• minute
• isolated