To conserve type, copy was cast off; that is, type needed for the initial pages was estimated so that the pages need not be composed in the same sequence as the copy.

[…]Fall to't yarely, or we run ourselves aground. Bestir, bestir!

to inflame the eyes by overwork

Previous comparisons of rangeomorphs with cnidarians or ctenophores now seem unlikely. The fact that both sides of the rangeomorph structure are essentially identical, is not consistent with the rangeomorph frondlet representing the bases of an array of open tubes that housed polyps or other filter feeding organisms.