Response to Bats
CreationWiki response: (Talk.Origins quotes in blue)
GAP: One of the least understood groups of modern mammals -- there are no known bat fossils from the entire Paleocene. The first known fossil bat, Icaronycteris, is from the (later) Eocene, and it was already a fully flying animal very similar to modern bats. It did still have a few "primitive" features, though (unfused & unkeeled sternum, several teeth that modern bats have lost, etc.)
- Fruit bats and horseshoe bats first appear in the Oligocene. Modern little vespertiliontids (like the little brown bat) first appear in the Miocene.
Icaronycteris was a fully flying bat. All this may show is that all bats have a common ancestor. A bat.
This is precisely what one would expect if the Bible is true. God created the bat Icaronycteris with no ancestors and this produced a number of varieties of bat. Creationism predicts that no fossil intermediate between bats and another kind will ever be found.