Seen here is the skull of the puff type of this venomous reptile
The snake's 
common names include Gaboon viper, butterfly adder, forest puff adder, whisper,
... [DOC] [TLE] How snake bites could help prevent heart attacks  Cambridge ... [PAR] Oct 28, 2015 ... Skull of Bitus arietans  or Puff Adder  from the family Viperidae ...