embryo | Embryo | Kepler's laws of planetary motion | Embryo (band) | The Planetary Society | Planetary science | planetary science | Planetary Resources | planetary nebula | Wide Field and Planetary Camera | Planetary Science Decadal Survey | planetary geology | Planetary core | Planetary body | Lunar and Planetary Laboratory | Embryo transfer | Embryo splitting (disambiguation) | Embryo splitting |
Also few if any bodies larger than Ceres (planetary embryos) could have remained in the asteroid belt at the end of that era.