菊石 júshí ammonite Definitions Defs Origin Strokes Stroke Words Sentences Sents 菊石 júshí ammonite An extinct group of marine mollusks with spiral shells, existing from the Devonian until the end of the Cretaceous; now found only as fossils. Cross-References Classifier 块 kuài
菊石 júshí ammonite An extinct group of marine mollusks with spiral shells, existing from the Devonian until the end of the Cretaceous; now found only as fossils. Cross-References Classifier 块 kuài
