Authors: M.J. de Kluijver & S.S. Ingalsuo
Choice: 1a
Free living animals; body totally covered in a bivalved carapace, though appendages are visible
Choice: 1b
Sessile animals; body at least partly covered with calcareous plates
Choice: 1c
Free living animals; with or without a carapace, but exposing parts of a segmented body (sometimes only at the underside)
Page 1
Choices made: 0

Remaining: 0
Excluded: 0
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