Evolutionary Development

noun the development or course of development of an individual organism

• The study of ontogeny focuses on the development of an individual organism from conception to maturity.
• Ontogeny is basically the process of how a living thing grows up.
• I never really paid attention to the ontogeny stuff in biology class.
• Just like the ontogeny of a butterfly, we all go through different stages of transformation in our lives.

noun a living organism that lacks a cranium or skull, such as certain invertebrates

• Acraniates are animals that lack a distinct skull or cranium.
• Did you know that acraniates are animals without a proper skull?
• Those acraniates are like the rebels of the animal kingdom, no skull and no rules!
• Being an acraniate in a world full of expectations can sometimes feel like not having a clear direction or purpose.