related tags: 3C3E41 3D3E40 85827F 88837C A9A49E AEA599 C2BFB9 C7C0B4 D3D2D0 D5D2CF brittle california county formation fossil fossiliferous fossils lake limestone lopez luis margarita miocene obispo ophiocrossota ophiuroid ophiuroids san sandy santa star stars