The ancient chordates are thought to be most likely related to echinodermata because the embryos of chordates and echinodermata are a hominine can use both hands to carry an object from one place to another because it does not need its hands for locomotion t f

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.