Phylum Echinodermata

Concentricycloidea (sea daisies)
discovered in 1986
disk-shaped flat bodies and are less than 1 cm in diameter. The two
species were located on wood found in deep waters off the coasts of New Zealand and the Bahamas
recently found in the North Pacific (Voight, 2005)
water-vascular system, with tube feet on the body surface around the edge of the disk
no obvious arms or mouth; appear to absorb nutrients through their body wall
possibly an aberrant asteroid
Reference:
Voight, J. R. 2005. First report of the enigmatic echinoderm Xyloplax from the North Pacific. –
Biological Bulletin, 208: 77-80.
Echinodermata – classification – Eleutherozoa – Concentricycloidea