References
- Gegenbaur . 1878 . Elements of Comparative Anatomy . Ray Lankester's edition , : 501 – 501 . 8vo
- Gegenbaur . 1878 . Elements of Comparative Anatomy . Ray Lankester's edition , : 501 – 501 . 8vo
- 1866 . Anatomy of Vertebrates , i : 271 – 271 .
- Newport . 1843 . Phil. Trans. , : 243 – 243 .
- 1833 . Aspects of the Body in Vertebrates and Invertebrates , 8vo
- “Reports,” &c. in Transactions of the British Association 1881 &c. for8vo.
- 1882 . Journal of the Linnean Society . Zoology , xvii