Mass Extinctions Mass Extinctions from Janny Woo Mass Extinctions The Sixth Mass Extinction A poster informing viewers about an upcoming conference on Biodiversity and most importantly, the Sixth Extinction. Original poster size: 24"x36" A poster informing viewers about an upcoming conference on Biodiversity and most importantly, the Sixth Extinction. Original poster size: 24"x36" Stationery, envelopes and business card for a fictitious conference on Biodiversity and most importantly, the Sixth Extinction. gLike Mass Extinctions The Sixth Mass Extinction Graphic Design Share R 7 n Janny Woo Seattle, WA Follow Contact