Time to show the fractal building of an ammonite septum (Madagascaran Argonauticeras besairei) Posted on 2022/02/15 by Carl Robitaille Time to show the fractal building of an ammonite septum (Madagascaran Argonauticeras besairei). @SHNB_BSHNB @FemoraleShells @Ferpertier @MuseoGeominero pic.twitter.com/7qdiGnsSER— Pep Juárez Ruiz. (@NitePep) April 16, 2020