Is a frog's(not a specific specie) scientific name Animalia Chordata Amphibia Anura?
Since this is not my area of expertise, I searched Google under the key words "Amphibia Anura" to get these possible sources:
http://pick5.pick.uga.edu/mp/20q?search=Anura
http://animaldiversity.ummz.umich.edu/site/accounts/information/Anura.html
That seems to be the name.
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.