The stages of development between fertilization and hatching.  These stages include:

- fertilization
- cleavage
- gastrulation
- organogenesis
- larval stages
- maturity
- gametogenesis

Embryogenesis

Major Cell Types in the Embryo

A developing organism before it hatches or is born.  

Michigan State University

The study of animal development from fertilization to birth.  

Embryology

Barresi, M. J., &amp; Gilbert, S. F. (2020). Developmental Biology (12th ed.). New York: Sinauer.

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