Number and arrangement of extraocular muscles in primitive gnathostomes: evidence from extinct placoderm fishes
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Description
Exceptional braincase preservation in some Devonian placoderm fishes permits interpretation of muscles and cranial nerves controlling eye movement. Placoderms are the only jawed vertebrates with anterior/posterior obliques as in the jawless lamprey, but with the same function as the superior/inferior obliques of other gnathostomes. Evidence of up to seven extraocular muscles suggests that this may be the primitive number for jawed vertebrates. Two muscles innervated by cranial nerve 6 suggest...[Show more]
Collections | ANU Research Publications |
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Date published: | 2008 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/33950 |
Source: | Biology Letters |
DOI: | 10.1098/rsbl.2007.0545 |
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01_Young_Number_and_arrangement_of_2008.pdf | 470.53 kB | Adobe PDF |
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