Hello forum members!   With the new Coronavirus raging across the world, I thought it would be nice to start some kind of advent calendar, using my own Squalicorax collection. Everyday I will post one or multiple Squalicorax teeth from one location. Let's see what ends sooner, my collection or the virus outbreak.    I will start with the oldest tooth from the Albian substage and end with the teeth from the uppermost substage; the Maastrichtian.     The first on