Belemnites are an extinct group of Mesozoic coleoid cephalopods, common in Jurassic and Cretaceous marine sedimentary rocks. Despite their significance, their total group phylogeny …
Belemnite rostra are very abundant in Mesozoic marine deposits in many regions. Despite this abundance, soft-tissue specimens of belemnites informing about anatomy and …
Phosphorus is the ultimate limiting nutrient for marine primary productivity over geological timescales and plays a key role in modulating several geochemical cycles. Established …