Scientists studied a 444-million-year-old marine fossil that preserved its muscles, tendons and guts but lost its head, legs and outer shell; they named it after the discoverer's mother

• The fossil Keurbos susanae - or Sue - in the rock.
• Image Credit: University of LeicesterA marine creature that lived 444 million years ago has become the subject of a remarkable fossil study after scientists discovered that its internal structures survived while much of its outer body disappeared.
• The fossil, identified as a new species called Keurbos susanae, preserves muscles, tendons, connective structures and digestive remains in exceptional detail, despite lacking its head, legs and most of its hard outer covering.