Maybe Calypsis believes that a living fossil is an existing species that is unchanged from some long-ago ancestral species, but I'm not sure. There does seem to be something amiss in the way he's looking at things, because he's making triumphal observations that he seems to think are evidence against evolution, but no one else can figure out how. His misimpression that paleontologists haven't known for over a century that mammals coexisted with dinosaurs is also a bit weird.
Until we get a better idea of the nature of his misunderstandings it might not be possible to give him any feedback that would help him stay on-topic.
--Percy