Job Kibii, head of the National Museums of Kenya's paleontology department, holds a piece of the 23-million-year-old bones of the newly-discovered giant 'simbakubwa kutokaafrika' (big lion from Africa), whose unveiling made headlines around the world, at the Nairobi National Museum, in Nairobi on May 23, 2019. - Between 7,000 and 10,000 new fossils arrive at the Nairobi National Museum's lab every year, Kibii says, overwhelming his 15 staff who must painstakingly clean and log each specimen into the system. By law, fossils uncovered in Kenya must go to the museum for "accessioning" -- the process of labelling, recording and storing for future generations. (Photo by SIMON MAINA / AFP)