Küüsikloomade roll lülijalgsete evolutsiooni mõistmises
, Jannsen, R., Akam, M. 2010. Head patterning and
Hox gene expression in an onychophoran and its implications for the arthropod head
problem. Development Genes and Evolution. 220, 3-4 117-122. [online]
(http://www.springerlink.com.ezproxy.tlu.ee/content/lp454782714r0715/)
Hughes, C. L., Kaufman, T. C. 2002. Hox genes and the evolution of the arthropod body
plan. 4, 6. 459-499. [online]
(http://ehis.ebscohost.com.ezproxy.tlu.ee/ehost/pdfviewer/pdfviewer?sid=7c738895-1958-
42d8-822f-d5386559d587%40sessionmgr14&vid=2&hid=3) (07.03.2012)
Mayer, G., Harzsch, S. 2007. Immunolocalization of serotonin in Onychophora argues
against segmental ganglia being an ancestral feature of arthropods. 7, 1, 118. [online]
(http://www.springerlink.com.ezproxy.tlu.ee/content/y02u8xn8w5q15065/fulltext.html)
(07.03.2012)
Mayer, G., Whitington, P. M., Sunnucks, P., Pflüger, H-J. 2010. A revision of brain
composition in Onychophora (velvet worms) suggests that the tritocerebrum evolved in
arthropods
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