In man and other vertebrates, hermaphrodism is always abnormal.
All these facts tell in favour of the common descent of man and all other vertebrates.
Who can tell, for instance, how Vertebrates arose or from what origin?
The law of parallelism applied not only to Vertebrates but also to Invertebrates.
Dugès also made a comparison of Articulates with Vertebrates.
Probably arthropods and vertebrates were threatened with it too.
A good many poets must be classed with this group of vertebrates.
For my part, I see no reason why we should not immediately leave the vertebrates.
The corpuscles of the blood are also similar in form to those of the vertebrates.
Eyes in the head are an essential part of the organisation of vertebrates.