C3H4O1N1D2R1O1C3R1A1N1I1U1M3
24 points
CHONDROCRANIUM is validvalid
an initial cartilaginous cranium that is replaced by bone in fetal development [n CHONDROCRANIA, CHONDROCRANIUMS]
the cartilaginous parts of an embryonic cranium [n CHONDROCRANIA or CHONDROCRANIUMS]