| ̷ ̷ ̷ ̷(ˌ) ̷ ̷ or ̷ ̷| ̷ ̷ ̷ ̷ at archae- + noun
Usage: capitalized
Etymology: New Latin, from archae- + Calamites
: a genus of fossil plants related to Calamites, found in the oldest Carboniferous strata, and having large repeatedly dichotomous leaves and a strobilus like an equisetum