bipinnaria

[ bahy-pi-nair-ee-uh ]

/ ˌbaɪ pɪˈnɛər i ə /

the free-swimming, bilaterally symmetrical larva of certain starfishes.

Origin of bipinnaria

From New Latin; see origin at bi-¹, pinna, -aria

Bipinnaria or Branchiolaria: The larval stage of starfishes.

The Sea-beach at Ebb-tide |Augusta Foote Arnold
The egg becomes a sort of infusoria, the infusoria becomes a bipinnaria, and this produces the Asterias.

The Ocean World: |Louis Figuier
Ontologically, however, the two bands of Bipinnaria do not appear to arise from the division of a single band.

The Works of Francis Maitland Balfour, Volume II (of 4) |Francis Maitland Balfour
Thus the larv of the starfishes were called Bipinnaria, the larv of the sea-urchins Pluteus, and so on.

Elementary Zoology, Second Edition |Vernon L. Kellogg

The presence of two rings instead of one distinguishes the Bipinnaria from the Auricularia.

The Works of Francis Maitland Balfour, Volume II (of 4) |Francis Maitland Balfour