Stephen Himson is a researcher at the University of Leicester. His PhD thesis was entitled “Are neobiota a biological and biostratigraphical marker of the Anthropocene?” He has undertaken field work in San Francisco Bay and has expertise in biostratigraphy and microfossil processing. As part of his PhD, he has assessed the biostratigraphic signature of a range of neobiotic species, including foraminifera, molluscs, and ostracods. These species have contributed to the fundamental reconfiguration of San Francisco Bay and often outnumber their native counterparts. Himson’s research has demonstrated the physical biostratigraphic record of these species in core successions across the Bay, allowing them to be correlated with each other. He has also been able to correlate these core sequences with other ecosystems around the world where the biostratigraphic record of neobiota has been demonstrated.