Description
Tangential needles numerous, make an external interwoven veil; radial spines denticulate (Fig . 2a) . FAMILY: ASTRACANTHIDAE Haeckel , 1887 Skeleton of radia l, hollow spines with proximal ends united at center, forming a hollow space, surrounding two enclosed central capsules.
Type species
Figures
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Raw text
Tangential needles numerous, make an external interwoven veil; radial spines denticulate (Fig . 2a) . FAMILY: ASTRACANTHIDAE Haeckel , 1887 Skeleton of radia l, hollow spines with proximal ends united at center, forming a hollow space, surrounding two enclosed central capsules.