The only one I could think of was the salamander. The other amphibians are frogs, toads, and newts.
A leptodactylidae is an amphibian. It is a frog species.
The word you're looking for is "clay." It has "l" as the third letter and "c" as the fourth letter. You're welcome.
china
MALAS
Urocordylus is an extinct amphibian. It begins with the letter u.
Quasicaecilia is an extinct amphibian. It begins with the letter Q.
helix
A five letter word with the third letter as an 'L' is below. Below is a word used to describe when something is positioned lower than something else.
There are so many four letter words in the English language. Examples of four letter words that have the letter l as the third letter are fall, ball, felt, call, and tall.
Asleep
none there is no amphibian starting with n
Halt, lull.