The early Cenomanian crippsi Event at Lüneburg (Germany): palaeontological and stratigraphical significance of a widespread Late Cretaceous bioevent - Palaeobiodiversity and Palaeoenvironments The early Cenomanian crippsi Event comprises a 1–3-m-thick interval characterised by mass occurrences of the early Cenomanian inoceramid Gnesioceramus crippsi, identified in the uppermost Sharpeiceras...

Chapter 2.10 by Ifrim et al. on #Paleobiogeography of Late #Cretaceous #Ammonoids suggests 4 realms, a recurring Superrealm and loss of provincialism before extinction: rdcu.be/eNebr

Latest underline the importance of #sea-level and #temperature: doi.org/10.1007/s125... doi.org/10.1016/j.ja...

Paleobiogeography of Early Cretaceous Ammonoids Ammonites are often dominant elements of Early Cretaceous marine faunas. Many species are important index fossils, in some cases with worldwide distribution. We review the paleobiogeography for the Ea...

Chapter 2.9 by Lehmann et al. shows #Paleobiogeography of Early #Cretaceous Ammonoids: rdcu.be/eNamz shifted from a Boreal–Tethyan split to Tethyan dominance, then Austral Realm emergence.

It called for #new #quantitative analyses that #support the rise of the Austral Realm: doi.org/10.1130/G389...

Macroevolution and Paleobiogeography of Jurassic-Cretaceous Ammonoids Jurassic-Cretaceous (J-K) ammonoids experienced remarkably rapid rates of evolution and extinction. The processes that fueled this evolutionary volatility are not well understood. Evolutionary relatio...

Chapter 2.8 by Yacobucci linking #Macroevolution and #Paleobiogeography of #Jurassic-Cretaceous #Ammonoids: rdcu.be/eMHnV inspired a model for speciation: doi.org/10.7208/chic...

Latest show importance of #global and #regional analyses to test models: doi.org/10.1017/pab.... doi.org/10.1038/s414...