Ammonoids and Quantitative Biochronology—A Unitary Association Perspective Ammonoid evolutionary changes have long been recognized to be excellent time markers. They are the major macrofossil group to date and correlate Paleozoic and Mesozoic marine strata. Originations and ...

Chapter 2.11 by Monnet et al. on #Ammonoids and #Quantitative #Biochronology —A Unitary Association Perspective: rdcu.be/eNedO

Latest further highlight the method based on #coexistences to produce robust ammonoid #biozonations:
doi.org/10.1127/nos/...
doi.org/10.1016/j.pa...
doi.org/10.1016/j.pa...