I suggest you read what CreationWiki has to say on the issue. It's a source edited by all sorts of creationists, outside of any specific debate, so should give a nice definition. They even have pictures.
http://creationwiki.org/Macroevolution
The definitions they use are
- Macroevolution - long-term evolution that results in the formation of new taxonomic groups
- Microevolution - the small scale change in organisms within the same species, which can lead to a subspecies or variations of the same created kind.
Then again, the EvoWiki has this to say about it:
http://wiki.cotch.net/index.php/Macroevolution
quote:
Creationists accept microevolution, which they define as evolution within kinds (kinds meaning sometimes species, sometimes bigger taxa, depending on taste) but deny that a kinds may evolve into another (macroevolution). This argument is strongly opposed by scientists because microevolution and macroevolution are the same process in different scales and it is irrational to say that only one of them exists.
"Der Mensch kann was er will; er kann aber nicht wollen was er will." (Man can do what he wills but he cannot will what he wills.) - Arthur Schopenhauer
Help inform the masses - contribute to the EvoWiki today!