kajiwara, on 30 March 2013 - 06:08 PM, said:
Im not sure why u think something has to have a brain to function. Squids dont have brains or bones for that matter and are still intelligent on a base level
Cephalopod Brain Terminology
Richard E. Young, Michael Vecchione, and Katharina M. Mangold (1922-2003)
A ventral view of this brain and the optic lobes can be
found here.
J. Z. Young, the leading authority on the cephalopod nervous system in the latter half of the 20th century, divided the cephalopod brain into two regions: the supraesophageal mass and the subesophageal mass. These regions are joined laterally by two regions, the basal lobes and the dorsal magnocellular lobes. This arrangement suggest the ancestral brain was formed from two partially-circumesophageal cords that included the middle and posterior subesophageal masses and that these were fused dorsally with a third cord, the supraesophageal mass. The supra- and subesophageal masses further connected by the cerebro-brachial connective that runs between the anterior regions. The latter connection involves the anterior subesophageal mass and the superior buccal lobes. In decapodiforms these lobes are well removed from the rest of the brain and suggests that either they were not part of the original circumesophageal chords or formed a separate more anterior cord.
References
Young, J. Z. (1971). The Anatomy of the Nervous System of
Octopus vulgaris. Claredon Press, Oxford. 690pp.
Young, J. Z. 1965. The central nervous system of
Nautilus. Phil. Trans. R. Soc. B, 249: 1-25.
Young, R.E. 1967. Homology of retractile filaments of vampire squid. Science, 156(3782):1633-1634.
http://tolweb.org/ac...ogy?acc_id=1944
http://ocean.si.edu/giant-squid
Edit: Additional reference.
Edited by Swede, 30 March 2013 - 06:28 PM.