Short note on the Sirenia disappearance from the Euro-North African realm during the Cenozoic: a link between climate and Supernovae?

TL;DR

This paper explores the hypothesis that supernovae events in the Milky Way may have influenced Cenozoic climate changes, contributing to the disappearance of Sirenia from Europe by linking galactic phenomena with Earth's climate evolution.

Contribution

It introduces a novel hypothesis connecting galactic supernovae to Earth's climate shifts and Sirenia extinction, expanding the understanding beyond Earth-centric processes.

Findings

Supernovae may have impacted Earth's climate over long timescales.

Galactic environment considerations help explain Cenozoic climate trends.

Sirenia disappearance could be linked to galactic events.

Abstract

Sirenia are marine mammals that colonized the European shores up to 2.7 Ma. Their biodiversity evolution follows the climate evolution of the Cenozoic. However, several climate events, as well as the global climate trend of this Era are still struggling to be understood. When considering only Earth processes, the climate evolution of the Cenozoic is hard to understand. If the galactic environment is taken into account, some of these climate events, as well as the global climate trend, became more easily understood. The Milky Way, through Supernovae, may bring some answers to why Cenozoic climate had this evolution. With the assumption that SN can induced changes in Earth climate in long time scales, Sirenia disappearance from Europe would be a side effect of this process.