Here are some examples of phenomena that can be explained by a catastrophe, like the Noachian Flood.
Photo Credits: http://siriusknotts.wordpress.com/2008/09/08/darwins-dyke-what-the-fossil-record-actually-shows/
Fossil Ichthyosaur: http://images.google.com/imgres?imgurl=http://www.lucasbrouwers.nl/blog/wp-content/uploads/2009/10/ichthyosaur-giving-birth.jpg&imgrefurl=http://www.lucasbrouwers.nl/blog/2009/10/sex-determination-in-sea-monsters/&usg=__zF1cEDOFhaE4C0xnAMx68-iB3Nc=&h=381&w=1188&sz=363&hl=en&start=4&um=1&itbs=1&tbnid=x8pm2S_TdYD6QM:&tbnh=48&tbnw=150&prev=/images%3Fq%3DA%2BFossil%2BIchthyosaur%2BGiving%2BBirth%26um%3D1%26hl%3Den%26sa%3DG%26tbs%3Disch:1