Thus vertebrate and annulate embryos agree in certain points at the time of the formation of the primitive streak.    From Wordnik.com.  [Form and Function A Contribution to the History of Animal Morphology] Reference

In eggs with yolk, whether vertebrate or annulate, there is always a separation into an animal and a plastic layer.    From Wordnik.com.  [Form and Function A Contribution to the History of Animal Morphology] Reference

Among annulate animals the theory of repetition found ample scope; Oken was able to compare with justice the jaws of crabs and insects with their other limbs, as Savigny did later in a more scientific way.    From Wordnik.com.  [Form and Function A Contribution to the History of Animal Morphology] Reference

Cross rings may or may not be present, and the cup is either smooth or annulate.    From Wordnik.com.  [Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901] Reference

5-toothed, 2-lipped; upper lip 3-toothed or entire (deciduous in Scutellaria); lower lip 2 - or 4-toothed; tube sometimes hairy annulate inside.    From Wordnik.com.  [Find Me A Cure] Reference