What anatomical feature is shared by all chordates?
laxchord
isochord
botachord
notochord
Did you know that fish, amphibians, reptiles, birds, and mammals are all related? They are all chordates. Chordates are a group of animals that includes vertebrates, as well as several closely related invertebrates. Chordates (phylum Chordata ) are named after a feature they all share, a notochord. A notochord is a hollow nerve cord along the back.