Phylum Chordata: Subphylum Cephalochordata and Urochordata along with the subphylum Craniata
Among living vertebrates, the closest living relatives of birds are crocodiles and alligators.
Echinoderms, being starfish, sea urchins, and sea cumcumbers.
Amphibians are the closest to reptiles, though they are different because amphibians breathe through their skin, and reptiles breathe through their nostrils.
From evolutionary point of view birds are most closely related to reptiles , but apparently they resemble mammals .
Amphibians ARE vertebrates!
birds
The group of vertebrates most closely related to birds are probably the dinosaurs.
Birds. Reptiles are also vertebrates.
they are in invertebrate-- A bit more info --Yes, they are indeed an invertebrate, but they are the closest invertebrate phylum to vertebrates. The only ones which are closer are the group Urochordata, the cephalochordates and the hagfish (which is a craniate, not a vertebrate)We are more related to starfish and sea cucumbers than to insects...
Well its sort of confusing, see since the invertebrate group has more groups than the vertebrate than that means invertebrate would have more organisms.
Alligators are vertebrates because they have a backbone.
They come from the class of birds, but they´re not invertebrates. Invertebrate means ´without a backbone´, and birds do have a backbone (and the rest of their skeleton), making them vertebrates!
Reptiles
AnswerAn invertebrate. It does not have a spine.
I think it is called family. Hope this helps.
The octopus is an invertebrate, therefore it cannot be a fish, which belong to the group of animals known as vertebrates. The octopus is a mollusc, and from the same group as squid and cuttlefish.
The group of organisms where members are more closely associated is species. Genus is the next one group where members are closely related.
a Class