The present paper deals with 4 species of Family Lyonsiidae , collected from the China Seas : one new genus and new species, Sinolyonsia sinica gen . et sp. no
In accordance with the similarity between breaking waves and hydraulic jumps, the expressions for estimating wave decay and wave energy dissipation in the surf
Six species, belonging to five genera, of large animal remains are firstly described andreported in this paper. They were found in the late Holocene high beachr