| 释义 |
brach·i·op·o·da
\ˌbrakēˈäpədə\ noun plural
Usage: capitalized
Etymology: New Latin, from brachi- + -poda
: a phylum of invertebrates that has persisted with reduced numbers from the Lower Cambrian to the present and that consists of sedentary unsegmented marine animals with well-developed coelom and hemocoel, a lophophore, and often a fleshy stalk extending into the substrate, the body being enclosed in a bivalve chitinophosphatic or calcareous shell the valves of which are unequal, bilaterally symmetrical, and usually regarded as dorsal and ventral |