Ordovician Period, 485-444 million years B.P. A group of three Ophiuroidea sp. fossil brittle stars in three matrices, two nearplete, one partial; held in a white card collector's tray. 4-78 grams, 30-60 mm (110 grams total, 67 x 65 mm including tray) (1 1/3-2 1/3 in. (2 1/2 x 2 1/2 in.)). El Kaid Errami, Tafilalt, Morocco, North Africa. Old German collection. [3, No Reserve]