Has the “Tully monster” thriller lastly been solved after 75 years?
Enlarge / Fossil of Tullimonstrum gregarium (“Tully’s frequent monster”). Its discovery within the 1950s sparked a long-running scientific debate as as to whether the creature ought to be classed as a vertebrate or invertebrate. (credit score: Ghedoghedo/CC BY-SA 3.0) The