Please!
This is hogwash.
'Gaps of 20,000 to 80,000 years' with no resultant fossil record?
What did they do? Turn to dust.
Even the species sited are not consistant in the 'theoretical evolutionary cyle'.
The socalled 'proof' is nothing more than a hyposthesis of what they 'think' has happened between specie manisfestations and they even admit that:
"Species-to-species transitions are even harder to document. To demonstrate anything about how a species arose, whether it arose gradually or suddenly, you need exceptionally complete strata, with many dead animals buried under constant, rapid sedimentation. This is rare for terrestrial animals."
And even the ones discovered can not be considered 'conclusive' based on the 'gaps' in the fossil records.
Hey....you're asking him to read all that stuff at those links? The very idea! Next thing you'll do is tell him to go to a major natural history museum. How far will you go, eh? [grin]