References and Links:

Bonnaud, L., Boucher-Rodoni, R. and Monnerott, M. 1997. Phylogeny of Cephalopods Inferred from Mitochondrial DNA Sequences. Molecular Phylogenetics and Evolution. 7(1):44-54.

The Cephalopod Page - http://www.thecephalopodpage.org/vampy.php

MarineBio.org - http://marinebio.org/species.asp?id=179

Seibel, B.A., Chausson, F., Lallier, F.H., Zal, F. And Childress, J.J. 1999. Vampire blood: respiratory physiology of the vampire squid (Cephalopoda: Vampyromorpha: Vampyroteuthidae) in relation to the oxygen minimum layer. Experimental Biology Online. 4:1-10.

Seibel, B.A., Thuesen, E.V. and Childress, J.J. 1998. Flight of the Vampire: Ontogenetic Gait-Transition in Vampyroteuthis infernalis (Cephalopoda: Vampyromorpha: Vampyroteuthidae). The Journal of Experimental Biology. 201:2413-2424.

Tree of Life Project - http://www.tolweb.org/Vampyroteuthis_infernalis/20084

Wikipedia - http://en.wikipedia.org/wiki/Vampire_squid