BIOSTROMES (from the Greek word "bios" (life) and late Latin word "stroma" (bedspread) * EN: biostrome; DE: Biostrome; FR: bio strome; ES: biostromo; RU: биостромы) are the lenses of the rocks with the significant length (tens and hundreds of metres), which are formed by the biohermal limestones (see the "Bioherms" article). During the life of the organism, they represent by themselves the bank, which rises above the bottom of the basin. The combination of the biostromes, which are consequently growing within the cross section (during the time), is named as the biostromal massif, or as the biostell.