Biogeography of Paleozoic Ammonoids The spatial distribution of Paleozoic ammonoids shows an indifferent picture. Time intervals with inconspicuous biogeographic patterns alternate with intervals of well-expressed provincialism. The Dev...

Chapter 2.6 by Korn & De Baets on #Biogeography of #Paleozoic #Ammonoids: rdcu.be/eLCyf

#Fluctuations between widespread #cosmopolitanism and distinct #provincialism with #limited #utility for global #correlation but crucial for regional #zonations:
rdcu.be/eLCBn
dx.doi.org/10.1127/nos/2025/0872