What is the Japanese tree frog's scientific name?

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent  

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million

The largest unit within which gene flow can readily occur is a