Board Thread:Warhammer 40k General Discussion/@comment-24383134-20140105071847/@comment-82.31.230.235-20140106022528

vulkan does not count being a primarch, also in the latest novels he is revealed as being a perpetual like the emperor

there are examples in novels and on the site here describing physically aged space marines, but this may be the result of repetitive injury taking its toll on their system rather than age (stibor laezerek, fire hawks?), also that the blood angels/gene seed of sanguinius grants exceptional longevity even among space marines