The mass of more or less differentiated sarcode, of which the larva, or pseud-embryo, as opposed to the Echinoderm within it, is made up, always carries upon its exterior certain bilaterally-arranged ciliated bands, by the action of which the whole organism is moved from place to place; and it may be strengthened by the super-addition to it of a framework of calcareous rods.
"On the Origin and Metamorphoses of Insects"
Sir John Lubbock
In all these places they interacted with and could trace kinship bilaterally to the unmounted, more permanent inhabitants.
"Shoshone-Bannock Subsistence and Society"
Robert F. Murphy Yolanda Murphy
Relationships were traced bilaterally and widely, but ties were amorphous and weak.
"Shoshone-Bannock Subsistence and Society"
Robert F. Murphy Yolanda Murphy