Russell Garwood

Introduction The concept of the trophic level is widely used in ecology as a tool to understand the interactions between organisms within ecosystems (McNaughton et al. 1989, Jonsson 2017, Barbier and Loreau 2019, Cropp and Norbury 2020). However, the processes controlling the distribution of biomass among trophic levels are not always clear (Reuman et al. 2009, Eriksson et al. 2012, Hatton et al. 2015, Woodson et al. 2018, Barbier and Loreau 2019).

Establishing an accurate timeline for the diversification of life on Earth is integral to understanding major events in evolutionary history and linking these to the history of the planet. Phylogenies scaled to absolute time underpin our understanding of the interplay between biology and geology (Mills et al. 2022; Palazessi et al. 2022), the interactions between lineages across deep time (Strassert et al. 2021; Asar et al. 2022; Onstein et al.

Composition and Mineralogy of the Stoer Group Powdered rock samples for the Stoer Group analyzed by XRD show a common mineral assemblage of quartz, albite, and microcline with accessory biotite, chlorite-group minerals (either clinochlore or chlorite), and hematite (Table 1, Figure 2).