tresus nuttallii casiz 73583 - 3d model california academy sciences calacademy 1ee542a scientific name conrad 1837 locality marin county point reyes national seashore drake&rsquo s estero collection date 23 mar 1986 collector gregory h hall identified gordon l chan museum research institution san francisco&rsquo golden gate park our mission explore explain sustain life earth learn more specimen visit online invertebrate zoology & geology collections enter catalog number