The only one I know is the fossilized Kabutops.
http://bulbapedia.bulbagarden.net/wiki/Missingno. This is the page thats about missingno. but its basically just a glitch static thing that goes like a square then a rectangle to the left hand side going up (not very descriptive but you can go to the link and missingno normal is the first one on the pic)
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