 The fossil record for bees is very incomplete , but by 2012 some 11 specimens that might possibly be Bombini , some poorly documented , had been described ; some ( such as Calyptapis florissantensis from Florissant , USA , and Oligoapis beskonakensis from Beskonak , Turkey ) dated from the Oligocene . In 2012 a fossil bumblebee , Bombus ( Bombus ) randeckensis was found in the Miocene rocks of the Randeck Maar in southwestern Germany and confidently placed in the subgenus Bombus . In 2014 , a new bumblebee , Bombus cerdanyensis , was described from Late Miocene lacustrine beds of La Cerdanya , Spain , while another , Oligobombus cuspidatus was described from the late Eocene Bembridge Marls of the Isle of Wight . 
