A chordate is any animal that has a notochord or spinal chord. Any animal that is a vertebrate, i.e. mammals, birds, fish, reptiles or amphibians, is a chordate, or member of the phylum Chordata. As the platypus is a mammal, this includes platypuses as well.
chordate phylum
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Being 'chordate' means that the animal has a backbone.
I do not know to be honest, sorry.
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Chordate
Chordate
Chordate
Lancelets
chordate tendinae ,tendinous chords ,they manege the voles opening and closing
Frogs have notochords that allow for muscle attachment and support. They also have a backbone. All amphibians are classified as a chordate.