Ediacaran

adjective

Edi·​a·​car·​an ˌē-dē-ˈa-k(ə-)rən 

-ə-ˈker-ən,

-ˈka-rən

variants or less commonly Ediacara

ˌē-dē-ˈa-k(ə-)rə 

-ə-ˈker-ə,

-ˈka-rə

: being or belonging to an assemblage of extinct multicellular marine organisms of the Late Precambrian era

Ediacaran fauna

Ediacaran noun

Word History

Etymology

Ediacara Hills, South Australia

First Known Use

1959, in the meaning defined above