Streeter developmental horizon(s)

Street·er de·vel·op·men·tal ho·ri·zon(s)

(strē'tĕr dē-vel'ŏp-men'tăl hŏ-rī'zŏn[z]),
A term borrowed from geology and archeology by Streeter to define 23 developmental stages in young human embryos, from fertilization through the first 2 months; each horizon spanned 2-3 days and emphasized specific anatomic characteristics, to avoid discrepancies in the determination of age and body dimensions.
[G.L. Streeter]

Street·er de·vel·op·men·tal ho·ri·zon(s)

(strētĕr dĕ-velŏp-mentăl hŏr-īzŏnz)
A term borrowed from geology and archeology by Streeter to define 23 developmental stages in human embryos, from fertilization through the first 2 months; each horizon spans 2-3 days and emphasizes specific anatomic characteristics, to avoid discrepancies in the determination of age and body dimensions of an embryo.
[G.L. Streeter]

Streeter,

George L., U.S. embryologist, 1873-1948.
Streeter bands - strands of amniotic tissue adherent to the embryo or fetus. Synonym(s): amniotic bands
Streeter developmental horizon(s) - a term borrowed from geology and archeology by Streeter to define 23 developmental stages in young human embryos, from fertilization through the first 2 months.
Streeter dysplasia