According to a team of paleontologists at the University of Edinburgh, UK, the first complex animals lived millions of years earlier than previously thought. Reconstruction of the living Namacalathus: 1 – stem; 2 – parental cup; 3 – daughter cups; 4 – hollow ciliated tentacles; 5 – spines; 6 – lateral lumen; 7 – central opening; 8 – inner skeletal layer, foliated with columnar microlamellar inflections;...
