Puzzle ZXTO 

The infamous BrainBashers encyclopedia has been suffering from its usual problems again.

Below is a printout of reptiles and amphibians, but they have lost every other letter.

Can you replace the missing letters?
-r-g -o-t-i-e -n-k- -e-t -i-a-d -r-c-d-l- -a-a-a-d-r -u-t-e -k-n- a-l-g-t-r

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