ˌthanətōˈsēˌnōs noun
or than·a·to·coe·no·sis -tōsə̇ˈnōsə̇s
( plural thanatocoeno·ses -sə̇ˈnōˌsēz)
Etymology: New Latin thanatocoenosis, from thanat- + Greek koinōsis sharing — more at biocenose
: an assemblage of organisms or their parts brought together (as by deposition from flowing water) in nature after death