Man agrees in all these respects with the other vertebrates, and must have descended with them from the same common root.
Who can tell, for instance, how vertebrates arose or from what origin?
Of vertebrates, at least two types of fish are present—Ganoids and Elasmobranchs.
For my part, I see no reason why we should not immediately leave the vertebrates.
Probably arthropods and vertebrates were threatened with it too.
The corpuscles of the blood are also similar in form to those of the vertebrates.
All these facts tell in favour of the common descent of man and all other vertebrates.
Eyes in the head are an essential part of the organisation of vertebrates.
The kidneys of mammals are more compact and definite in form than those of other vertebrates.
Perforating gills (of vertebrates and other chordata), 142, 144.
vertebrate ver·te·brate (vûr'tə-brĭt, -brāt')
Having a spinal column.
Of or characteristic a vertebrate.
Any of a large group of chordates of the subphylum Vertebrata (or Craniata), characterized by having a backbone. Vertebrates are bilaterally symmetrical and have an internal skeleton of bone or cartilage, a nervous system divided into brain and spinal cord, and not more than two pairs of limbs. Vertebrates have a well-developed body cavity (called a coelom) containing a chambered heart, large digestive organs, liver, pancreas, and paired kidneys, and their blood contains both red and white corpuscles. Vertebrates include fish, amphibians, reptiles, birds, and mammals.