Check the listing for details. Coral branch fossils smaller agatized Ordovician Madagascar 1 # lots 1/2-1.5". Condition: New, Made in Madagascar. Listed at 16.99 USD. 1 pound lots of agatized coral fossil from Madagascar scooped from coral as pictured.Piece size runs smaller from 1/4 inch in diameter to approximately 1/2 to 1.5 inch long.The number of pieces per 1 pound will vary depending on the size of individual pieces but most lots run 20 plus pieces.This coral occurs in the Ordovician and silurian periods, and often form low cushions or branching masses alongside other corals. Their numbers began to decline during the middle of the Silurian period, and they became extinct at the end of the Permian period, 250 million years ago.The coral has long ago agatized or fossilized but still retains the classic coral patterns.This material can be polished to a great shine and cut to see some coral pattern.